- WLUG - wlug.mailman3.com

ZFS Fun!

by Tim Keller

During my talk, I spoke briefly about upgrading one of my machines from 3TB disks to 4TB disks. Here's a "zfs status" output (obviously with some critical details scrubbed) This is a raid 60 (4, 8 disk raid 6's). I'm replacing 4 disks, one from each of the strip sets. What I captured this output I'd just put in the fourth disk. So that 252h is now down to 15h, and likely soon it'll be even lower. Obviously, I/O load on the subsystem will cause this to stretch out. Note the "New Disk" labels were added for emphasis. bash-4.2# zpool status XXXXXX pool: XXXXXXX state: DEGRADED status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scan: resilver in progress since Wed Jul 8 10:30:22 2015 945M scanned out of 11.9T at 13.7M/s, 252h54m to go 945M scanned out of 11.9T at 13.7M/s, 252h54m to go 110M resilvered, 0.01% done config: NAME STATE READ WRITE CKSUM XXXXX DEGRADED 0 0 0 raidz2-0 DEGRADED 0 0 0 c3t5000C500637AADD3d0 ONLINE 0 0 0 replacing-1 DEGRADED 0 0 0 c3t5000C50064E9441Fd0 FAULTED 1 166 0 too many errors c3t5000C500637875EBd0 ONLINE 0 0 0 (resilvering) <---- New Disk c3t5000C5004DFE165Ad0 ONLINE 0 0 0 c3t5000C5004E0F3A80d0 ONLINE 0 0 0 c3t5000C5004E1B6EE1d0 ONLINE 0 0 0 c3t5000C5004E23870Bd0 ONLINE 0 0 0 c3t5000C5004E2AC08Fd0 ONLINE 0 0 0 c3t5000C5004E2AE946d0 ONLINE 0 0 0 raidz2-1 DEGRADED 0 0 0 c3t5000C500637879E7d0 ONLINE 0 0 0 replacing-1 DEGRADED 0 0 0 c3t5000C5004E2B1B22d0 FAULTED 139 222 0 too many errors c3t5000C500637ACF67d0 ONLINE 0 0 0 (resilvering) <------ New Disk c3t5000C5004E2BE74Dd0 ONLINE 0 0 0 c3t5000C5004E2BEA7Fd0 ONLINE 0 0 0 c3t5000C5004E2C0B84d0 ONLINE 0 0 0 c3t5000C5004E2C5397d0 ONLINE 0 0 0 c3t5000C5004E2D0C39d0 ONLINE 0 0 0 c3t5000C5004E2D1F13d0 ONLINE 0 0 0 raidz2-2 DEGRADED 0 0 0 replacing-0 DEGRADED 0 0 0 c3t5000C5004E2D48F6d0 UNAVAIL 0 4 0 cannot open c3t5000C500637933B3d0 ONLINE 0 0 0 (resilvering) <----- New Disk c3t5000C5004E2D58DAd0 ONLINE 0 0 0 c3t5000C5004E2D0821d0 ONLINE 0 0 0 c3t5000C5004E2D3220d0 ONLINE 0 0 0 c3t5000C5004E2D3749d0 ONLINE 0 0 0 c3t5000C5006A581C22d0 ONLINE 0 0 0 c3t5000C5004E25DFFFd0 ONLINE 0 0 0 c3t5000C5004E129273d0 ONLINE 0 0 0 raidz2-3 DEGRADED 0 0 0 replacing-0 DEGRADED 0 0 0 c3t5000C5006A582FE8d0 FAULTED 146 130 0 too many errors c3t5000C50063747E77d0 ONLINE 0 0 0 (resilvering) <----- New Disk c3t5000C50064D9AB36d0 ONLINE 0 0 0 c3t5000C50064D98E37d0 ONLINE 0 0 0 c3t5000C50064DF7F04d0 ONLINE 0 0 0 c3t5000C50064DFAE39d0 ONLINE 0 0 0 c3t5000C50064E3CBE0d0 ONLINE 0 0 0 c3t5000C50064E401FEd0 ONLINE 0 0 0 c3t5000C5004DE878BAd0 ONLINE 0 0 0 errors: No known data errors bash-4.2# Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

July 8, 2015

Re: [Wlug] WLUG july 9 BBQ food + planning

by Tim Keller

I'll likely be stopping on my way to the bbq, so I'll pick up a salad. Thanks, Tim. On Tue, Jul 7, 2015 at 7:55 AM, Eric Martin <eric.joshua.martin(a)gmail.com> wrote: > I'll be there, though I'm coming straight from work so I doubt I can bring > a salad. > > On Sun, Jul 5, 2015 at 12:33 PM Doug Mildram <dmildram(a)gmail.com> wrote: > >> Not required, but will be nice to hear from any folks planning to attend. >> >> Tim's bringing some of the food including soda/snacks; >> I'll have burgers and more ready early; >> I lack energy to make healthy stuff like a salad...can anyone? >> I DO have a spare/2nd fridge I'll be plugging in beforehand. >> >> Just based on gut and history, I'd expect 10-20 attendees. >> ===repeat pasting: >> The location is: 540 Linden St, Boylston MA. >> Time: At or before 7pm. >> Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, >> Soda. >> If you have any specific dietary needs, please let Doug and I know and >> we'll see what we can work out. >> _______________________________________________ >> Wlug mailing list >> Wlug(a)mail.wlug.org >> http://mail.wlug.org/mailman/listinfo/wlug >> > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

July 8, 2015

Re: [Wlug] WLUG july 9 BBQ food + planning

by Eric Martin

I'll be there, though I'm coming straight from work so I doubt I can bring a salad. On Sun, Jul 5, 2015 at 12:33 PM Doug Mildram <dmildram(a)gmail.com> wrote: > Not required, but will be nice to hear from any folks planning to attend. > > Tim's bringing some of the food including soda/snacks; > I'll have burgers and more ready early; > I lack energy to make healthy stuff like a salad...can anyone? > I DO have a spare/2nd fridge I'll be plugging in beforehand. > > Just based on gut and history, I'd expect 10-20 attendees. > ===repeat pasting: > The location is: 540 Linden St, Boylston MA. > Time: At or before 7pm. > Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, > Soda. > If you have any specific dietary needs, please let Doug and I know and > we'll see what we can work out. > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

July 7, 2015

Re: [Wlug] WLUG july 9 BBQ food + planning

by Joel

I also will not be able to attend this year's BBQ as I am up in ME. Hope everyone else comes and has a great time. Joel On July 6, 2015 12:00:23 PM wlug-request(a)mail.wlug.org wrote: > Send Wlug mailing list submissions to > wlug(a)mail.wlug.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.wlug.org/mailman/listinfo/wlug > or, via email, send a message with subject or body 'help' to > wlug-request(a)mail.wlug.org > > You can reach the person managing the list at > wlug-owner(a)mail.wlug.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Wlug digest..." > > > Today's Topics: > > 1. WLUG july 9 BBQ food + planning (Doug Mildram) > 2. Re: WLUG july 9 BBQ food + planning (JeffA Maillists) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 5 Jul 2015 12:32:17 -0400 > From: Doug Mildram <dmildram(a)gmail.com> > Subject: [Wlug] WLUG july 9 BBQ food + planning > To: wlug(a)wlug.org > Message-ID: > <CAJGZaTu_C_+bPw2Ytb78aGvZ0iTsfM9uOUFM8_DjsyJ6uu4HPg(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Not required, but will be nice to hear from any folks planning to attend. > > Tim's bringing some of the food including soda/snacks; > I'll have burgers and more ready early; > I lack energy to make healthy stuff like a salad...can anyone? > I DO have a spare/2nd fridge I'll be plugging in beforehand. > > Just based on gut and history, I'd expect 10-20 attendees. > ===repeat pasting: > The location is: 540 Linden St, Boylston MA. > Time: At or before 7pm. > Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, > Soda. > If you have any specific dietary needs, please let Doug and I know and > we'll see what we can work out. >

July 7, 2015

Re: [Wlug] WLUG july 9 BBQ food + planning

by JeffA Maillists

I won't be able to come as I'll be in NH at our church's Kids Camp... :( Oh well, there's always next year, LOL! On Jul 5, 2015 12:33 PM, "Doug Mildram" <dmildram(a)gmail.com> wrote: > Not required, but will be nice to hear from any folks planning to attend. > > Tim's bringing some of the food including soda/snacks; > I'll have burgers and more ready early; > I lack energy to make healthy stuff like a salad...can anyone? > I DO have a spare/2nd fridge I'll be plugging in beforehand. > > Just based on gut and history, I'd expect 10-20 attendees. > ===repeat pasting: > The location is: 540 Linden St, Boylston MA. > Time: At or before 7pm. > Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, > Soda. > If you have any specific dietary needs, please let Doug and I know and > we'll see what we can work out. > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > >

July 6, 2015

WLUG july 9 BBQ food + planning

by Doug Mildram

Not required, but will be nice to hear from any folks planning to attend. Tim's bringing some of the food including soda/snacks; I'll have burgers and more ready early; I lack energy to make healthy stuff like a salad...can anyone? I DO have a spare/2nd fridge I'll be plugging in beforehand. Just based on gut and history, I'd expect 10-20 attendees. ===repeat pasting: The location is: 540 Linden St, Boylston MA. Time: At or before 7pm. Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, Soda. If you have any specific dietary needs, please let Doug and I know and we'll see what we can work out.

July 5, 2015

Reminder: WLUG BBQ July 9th 7pm!

by Tim Keller

Longtime member Doug Mildram is graciously hosting the BBQ! The location is: 540 Linden St, Boylston MA. Time: At or before 7pm. Food: The usual {Cheese} Hamburgers / Hotdogs / Bratwurst's, Chips, dips, Soda. If you have any specific dietary needs, please let Doug and I know and we'll see what we can work out. Topics: As Doug said in his prior mail, BBQ's don't need a topic, but we'll likely be messing with FreeNAS, other ZFS stuff. We'll definitely take a crack at installing linux on Doug's lawnmower, chainsaw and or golden retrievers. Thanks, Tim. ---

July 2, 2015

Embedded Linux contract in RI

by John Spencer

We have a client in RI looking for an experienced Embedded Linux Engineer for a 6+ month contract. I have included some info below. Please call or email me directly if you are interested in hearing details. Embedded Linux engineer to work on design and development of embedded Linux system. Must have a strong prior background with embedded Linux design and development. Prior experience with C/C++ Prior Linux drivers development, test and integration Prior Linux kernel knowledge Experience with BSP development Regards, John Spencer Connected Systems Partners Office: (978) 455-5550 x208 Cell: (978) 621-9743 jspencer(a)connectedsp.com www.connectedsp.com GET CONNECTED! All information in this email, unless indicated otherwise in the body of the email, is considered confidential and intended for the view and use of the recipient(s) only.

June 29, 2015

Re: [Wlug] Flat screen monitor 19" needs fixit; free to good home

by E Johnson

Hi Jeff On Jun 28, 2015 12:29 AM, "JeffA Maillists" <jeffa.maillists(a)gmail.com> wrote: > > Hi Liz, > > If nobody else has chimed in, I'll take it. I've fixed a handful of LCDs with capacitor issues, and they're all still in use today. > > I'll use it as a 'preview' monitor at church if I can fix it. ;-) > > Let me know, Thanks! > > Jeff > > On Sat, Jun 27, 2015 at 9:58 PM, E Johnson <iris.gates(a)gmail.com> wrote: >> >> The power went out here twice today. After the second event, monitor seems to have died. >> >> This is an Acer monitor, several years old. Black(ish) bezel; not glossy. Flat screen, I think 19" diagonal. Has been a very nice reliable monitor during its working life. Has choice of DVI input or the older kind of data connection, whatever that used to be. >> >> This specific batch of Acer monitors had used a type of capacitor which is known to have a higher-than-usual failure rate, and this is PROBABLY what it needs. Had a twin of this that fryolated same way 2 years ago, and a WLUG member came by & reported shortly after that he got it up & running with just the replacement of bad caps. >> >> This monitor has been very steady and reliable until this afternoon, with nice display and no dead pixels, ever. So if you are handy with electronics fixits, capacitors are cheap and you could probably get this working again with only a screwdriver, a soldering iron and a little bit of fiddling. Might be nice for the kid's playroom or the back office, or something. >> >> I don't know how nice games look on this monitor, since I don't do gaming. Videos always looked perfectly fine with good color. >> >> PM me if you think you want this, since I have to get down under the work table to unplug the power cord & I'm not as spry as I used to be, but can do as long as my knees aren't required to do anything radical before Noon. Pickup after Noon any day, & evenings even sort-of late-ish are okay. I can meet you at the door with this. I'm in Worcester near Elm Park. >> >> Rather give this away here than trash it, or Freecycle... first dibs to WLUG. >> >> Best wishes, >> Liz J >> >> _______________________________________________ >> Wlug mailing list >> Wlug(a)mail.wlug.org >> http://mail.wlug.org/mailman/listinfo/wlug >> > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > Hi Jeff power is out here AGAiN tonight --they think back on 3-am --so I have to use this tablet thing but yes nobody has yet desired this monitor and we would be glad if you want to try repairing it. Email me direct please iris.gates(a)gmail.com for pickup time. thanks, Liz j sorry for typos

June 28, 2015

Re: [Wlug] Flat screen monitor 19" needs fixit; free to good home

by JeffA Maillists

Hi Liz, If nobody else has chimed in, I'll take it. I've fixed a handful of LCDs with capacitor issues, and they're all still in use today. I'll use it as a 'preview' monitor at church if I can fix it. ;-) Let me know, Thanks! Jeff On Sat, Jun 27, 2015 at 9:58 PM, E Johnson <iris.gates(a)gmail.com> wrote: > The power went out here twice today. After the second event, monitor seems > to have died. > > This is an Acer monitor, several years old. Black(ish) bezel; not glossy. > Flat screen, I think 19" diagonal. Has been a very nice reliable monitor > during its working life. Has choice of DVI input or the older kind of data > connection, whatever that used to be. > > This specific batch of Acer monitors had used a type of capacitor which is > known to have a higher-than-usual failure rate, and this is PROBABLY what > it needs. Had a twin of this that fryolated same way 2 years ago, and a > WLUG member came by & reported shortly after that he got it up & running > with just the replacement of bad caps. > > This monitor has been very steady and reliable until this afternoon, with > nice display and no dead pixels, ever. So if you are handy with electronics > fixits, capacitors are cheap and you could probably get this working again > with only a screwdriver, a soldering iron and a little bit of fiddling. > Might be nice for the kid's playroom or the back office, or something. > > I don't know how nice games look on this monitor, since I don't do gaming. > Videos always looked perfectly fine with good color. > > PM me if you think you want this, since I have to get down under the work > table to unplug the power cord & I'm not as spry as I used to be, but can > do as long as my knees aren't required to do anything radical before Noon. > Pickup after Noon any day, & evenings even sort-of late-ish are okay. I can > meet you at the door with this. I'm in Worcester near Elm Park. > > Rather give this away here than trash it, or Freecycle... first dibs to > WLUG. > > Best wishes, > Liz J > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > >

June 28, 2015

Flat screen monitor 19" needs fixit; free to good home

by E Johnson

The power went out here twice today. After the second event, monitor seems to have died. This is an Acer monitor, several years old. Black(ish) bezel; not glossy. Flat screen, I think 19" diagonal. Has been a very nice reliable monitor during its working life. Has choice of DVI input or the older kind of data connection, whatever that used to be. This specific batch of Acer monitors had used a type of capacitor which is known to have a higher-than-usual failure rate, and this is PROBABLY what it needs. Had a twin of this that fryolated same way 2 years ago, and a WLUG member came by & reported shortly after that he got it up & running with just the replacement of bad caps. This monitor has been very steady and reliable until this afternoon, with nice display and no dead pixels, ever. So if you are handy with electronics fixits, capacitors are cheap and you could probably get this working again with only a screwdriver, a soldering iron and a little bit of fiddling. Might be nice for the kid's playroom or the back office, or something. I don't know how nice games look on this monitor, since I don't do gaming. Videos always looked perfectly fine with good color. PM me if you think you want this, since I have to get down under the work table to unplug the power cord & I'm not as spry as I used to be, but can do as long as my knees aren't required to do anything radical before Noon. Pickup after Noon any day, & evenings even sort-of late-ish are okay. I can meet you at the door with this. I'm in Worcester near Elm Park. Rather give this away here than trash it, or Freecycle... first dibs to WLUG. Best wishes, Liz J

June 28, 2015

Re: [Wlug] WLUG bbq thurs july9 7pm boylston MA

by Robert Schwein

I have a working PC that can be sacrificed. Currently has Suse on it but we're free to put anything on it we wish. Bob On 6/24/2015 12:04 AM, Doug Mildram wrote: > Announcing (with Tim's blessing/OK) > our next meeting is the WLUG summer BBQ at my house ; > 540 linden st, boylston ma. <= 20min from worc via 290, > .....so many other ways to get here from north/190 ; east/495, etc. > Thurs July 9 at or before 7pm. Food details later. > > BBQ's don't need a topic, but I would love to keep doing+learning a > LITTLE with > > -- freeNAS : my own home server works enough to NOT wanna break it, > but smbd isnt working yet ( want to share > with win doze) > > -- other ZFS-able boxes (e.g. my junker/re-loadable PC has pc-bsd > with issues, > want it to catch ZFS snapshots over ssh for backups ..how > hard could that be?) > > -- chainsaws, musical instruments, tricks+treats for golden > retrievers and a cat > (just kidding for the meeting, but now you know way too much > about me) > > Maybe someone else wants to bring a tower/PC for abuse or argument > e.g. loading something like the above top 2, then studying the > result. Or not? > > What did I forget besides food? -doug also with wife's blessing, if I > do all the work. > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug

June 24, 2015

WLUG bbq thurs july9 7pm boylston MA

by Doug Mildram

Announcing (with Tim's blessing/OK) our next meeting is the WLUG summer BBQ at my house ; 540 linden st, boylston ma. <= 20min from worc via 290, .....so many other ways to get here from north/190 ; east/495, etc. Thurs July 9 at or before 7pm. Food details later. BBQ's don't need a topic, but I would love to keep doing+learning a LITTLE with -- freeNAS : my own home server works enough to NOT wanna break it, but smbd isnt working yet ( want to share with win doze) -- other ZFS-able boxes (e.g. my junker/re-loadable PC has pc-bsd with issues, want it to catch ZFS snapshots over ssh for backups ..how hard could that be?) -- chainsaws, musical instruments, tricks+treats for golden retrievers and a cat (just kidding for the meeting, but now you know way too much about me) Maybe someone else wants to bring a tower/PC for abuse or argument e.g. loading something like the above top 2, then studying the result. Or not? What did I forget besides food? -doug also with wife's blessing, if I do all the work.

June 24, 2015

Re: [Wlug] Minecraft security

by Dennis Payne

There are several open source Minecraft like games. Minetest is available for Fedora. Voxelands is a fork from it. Terasology is a more impressive looking minecraft like game. I wonder if you could create a usb live boot which runs one of those. You would avoid having to worry about the security of their windows. (I've only tried minetest. It lacks monsters by default so you might need some mods or something to make the games interesting.)

June 24, 2015

Re: [Wlug] ls character range wildcard oddity? (Dennis Payne)

by Aljerin Butler,Jr.

If you're still searching for an answer, you might want to research my websitehere http://customdesktopsolutions.mywebcommunity.org/index.php/help-for-do-it-y… or here Linux sysadmin-addendum | | | | | | | | | Linux sysadmin-addendumLinux sysadmin-addendum Details Category: Creating and using FOSS Published on Friday, 05 June 2015 23:50 Written by Super User Hits: 12 So you want to be a Linux sysadmin? | | | | View on customdesktopsolutions.mywebcommunity.org | Preview by Yahoo | | | | | Al Butler From: "wlug-request(a)mail.wlug.org" <wlug-request(a)mail.wlug.org> To: wlug(a)mail.wlug.org Sent: Friday, June 19, 2015 12:00 PM Subject: Wlug Digest, Vol 140, Issue 7 ----- Forwarded Message ----- Send Wlug mailing list submissions to wlug(a)mail.wlug.org To subscribe or unsubscribe via the World Wide Web, visit http://mail.wlug.org/mailman/listinfo/wlug or, via email, send a message with subject or body 'help' to wlug-request(a)mail.wlug.org You can reach the person managing the list at wlug-owner(a)mail.wlug.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Wlug digest..." Today's Topics: 1. Re: ls character range wildcard oddity? (Dennis Payne) Interesting. I see the same behavior. Near as I can tell bash decided that the alphabet is: aAbBcCdD... I wouldn't expect that to be the case but when I played around with various file name that was the behavior I saw. So [a-c] includes upercase B while [a-b] does not. 'ls [A-c]*' will show Berry but not apple. On Fri, 2015-06-19 at 09:29 -0400, Brett Russ wrote: Can someone explain this to my evidently inadequately caffeinated brain? I was trying to use a lower case character range wildcard to list all files not starting with an uppercase letter and I noticed it wasn't working as I'd expect. So I created this simple example and still don't understand what's happening. Dir with two files: brett@spider /tmp/test $ \ls apple Berry This is what I'd expect to see: brett@spider /tmp/test $ \ls [a-b]* apple This makes no sense. Is this a bug?: brett@spider /tmp/test $ \ls [a-c]* apple Berry >From here on are just a few extra examples confirming the oddity of the above. brett@spider /tmp/test $ \ls [a]* apple brett@spider /tmp/test $ \ls [b]* ls: cannot access [b]*: No such file or directory brett@spider /tmp/test $ \ls [c]* ls: cannot access [c]*: No such file or directory brett@spider /tmp/test $ \ls a* apple brett@spider /tmp/test $ \ls b* ls: cannot access b*: No such file or directory brett@spider /tmp/test $ \ls c* ls: cannot access c*: No such file or directory brett@spider /tmp/test $ dpkg -S `which ls` coreutils: /bin/ls brett@spider /tmp/test $ dpkg -s coreutils Package: coreutils Essential: yes Status: install ok installed Priority: required Section: utils Installed-Size: 6020 Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> Architecture: amd64 Multi-Arch: foreign Version: 8.21-1ubuntu5.1 [SNIP] Thanks, Brett _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug

June 23, 2015

Re: [Wlug] Minecraft security

by Randall Mason

I assume your grandson would be playing on a "safe" computer. Is the minecraft server hosted locally or on a remote server? Will it run on a "safe computer"? Would it just work to put a temporary router between your main router and the Internet source? What is the current topology of your network? Computers -> Linksys -> Cable Modem? I would just put an old router or computer set up as a router between your main one and the cable modem if that's an option: Safe Computers -> Linksys -> Old Router -> Cable Modem Unsafe Computers --WiFi/LAN----^ If this old router is a computer, you can even set up the minecraft server on it and then everybody, even the "Safe Computers" can access it. If not, you can port foward on the Linksys like in the tutorial: http://minecraft.gamepedia.com/Tutorials/Setting_up_a_server#Port_forwarding I would also set the "Linksys" to be the DMZ for the "Old Router" just so that any UPnP ports from the safe computers still get back to them. Or is it something like Computers -> FiOS Router/Modem? This would be a harder topology to do, but you can still set up a three layer network like: Safe Computers -> Linksys -> Old Router -> FiOS Router/Modem Unsafe Computers --WiFi/LAN----^ All of this would probably be pretty plug and play as long as you set the IP address of the routers to different subnets. E.G.: 192.168.0.1 192.168.1.1 and 192.168.2.1 Randall Mason clashthebunny(a)gmail.com On Mon, Jun 22, 2015 at 1:21 PM, Joel <joelgroup(a)gmail.com> wrote: > I don't have an answer for this one. > > But do have an 8 year old minecraft fan, so listening for any answers. > > Joel > > > On June 22, 2015 12:00:24 PM wlug-request(a)mail.wlug.org wrote: > > > Send Wlug mailing list submissions to > > wlug(a)mail.wlug.org > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://mail.wlug.org/mailman/listinfo/wlug > > or, via email, send a message with subject or body 'help' to > > wlug-request(a)mail.wlug.org > > > > You can reach the person managing the list at > > wlug-owner(a)mail.wlug.org > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Wlug digest..." > > > > > > Today's Topics: > > > > 1. Minecraft server security ... (David Glaser) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Sun, 21 Jun 2015 19:32:05 -0400 > > From: David Glaser <dglaser(a)glaserresearch.net> > > Subject: [Wlug] Minecraft server security ... > > To: Worcester Linux Users Group <wlug(a)mail.wlug.org> > > Message-ID: <55874975.1080808(a)glaserresearch.net> > > Content-Type: text/plain; charset="utf-8" > > > > Folks, > > > > My grandson wants to host a minecraft server party for his boy scout > > troop and my daughter and I are wondering how to ensure that the > > existing machines on her home network are not compromised given that the > > members of the troop will be bringing their own machinesand ethernet > > switchesalthough some may be running wireless. > > > > I was wondering if you could give us some thoughts on how to set up the > > network. It is my understanding that the minecraft clients do need to > > get out to the internet to obtain a valid player name. I had thought > > ofsetting up a seperate Router/Lan for the party, disconnecting the > > existing router/lan from the wan and connecting the minecraft router/lan > > to the wan for the duration of the party. > > > > Any thoughts out there? > > > > -David > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: > > > http://mail.wlug.org/pipermail/wlug/attachments/20150621/026af173/attachmen… > > > > ------------------------------ > > > > _______________________________________________ > > Wlug mailing list > > Wlug(a)mail.wlug.org > > http://mail.wlug.org/mailman/listinfo/wlug > > > > > > End of Wlug Digest, Vol 140, Issue 9 > > ************************************ > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

June 22, 2015

Minecraft security

by Joel

I don't have an answer for this one. But do have an 8 year old minecraft fan, so listening for any answers. Joel On June 22, 2015 12:00:24 PM wlug-request(a)mail.wlug.org wrote: > Send Wlug mailing list submissions to > wlug(a)mail.wlug.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.wlug.org/mailman/listinfo/wlug > or, via email, send a message with subject or body 'help' to > wlug-request(a)mail.wlug.org > > You can reach the person managing the list at > wlug-owner(a)mail.wlug.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Wlug digest..." > > > Today's Topics: > > 1. Minecraft server security ... (David Glaser) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 21 Jun 2015 19:32:05 -0400 > From: David Glaser <dglaser(a)glaserresearch.net> > Subject: [Wlug] Minecraft server security ... > To: Worcester Linux Users Group <wlug(a)mail.wlug.org> > Message-ID: <55874975.1080808(a)glaserresearch.net> > Content-Type: text/plain; charset="utf-8" > > Folks, > > My grandson wants to host a minecraft server party for his boy scout > troop and my daughter and I are wondering how to ensure that the > existing machines on her home network are not compromised given that the > members of the troop will be bringing their own machinesand ethernet > switchesalthough some may be running wireless. > > I was wondering if you could give us some thoughts on how to set up the > network. It is my understanding that the minecraft clients do need to > get out to the internet to obtain a valid player name. I had thought > ofsetting up a seperate Router/Lan for the party, disconnecting the > existing router/lan from the wan and connecting the minecraft router/lan > to the wan for the duration of the party. > > Any thoughts out there? > > -David >

June 22, 2015

Minecraft server security ...

by David Glaser

Folks, My grandson wants to host a minecraft server party for his boy scout troop and my daughter and I are wondering how to ensure that the existing machines on her home network are not compromised given that the members of the troop will be bringing their own machinesand ethernet switchesalthough some may be running wireless. I was wondering if you could give us some thoughts on how to set up the network. It is my understanding that the minecraft clients do need to get out to the internet to obtain a valid player name. I had thought ofsetting up a seperate Router/Lan for the party, disconnecting the existing router/lan from the wan and connecting the minecraft router/lan to the wan for the duration of the party. Any thoughts out there? -David

June 21, 2015

Re: [Wlug] ls character range wildcard oddity?

by Steve Revilak

>brett@spider /tmp/test $ \ls >apple Berry > >This is what I'd expect to see: > >brett@spider /tmp/test $ \ls [a-b]* >apple > >This makes no sense. Is this a bug?: This is probably more bash than ls. When you use `*' on a command line, the shell does filename glob expansion; the results of the glob expansion become arguments (to ls, in this case). Out of the box, I've always seen bash do case sensitive globs, but you can change this. # four files $ touch ax Ax bx Bx # all files starting with `a' $ ls a* ax # make glob expansion case insensitive $ shopt -s nocaseglob $ ls a* Ax ax # make it case sensitive again $ shopt -u nocaseglob $ ls a* ax If you actually want to see how the glob is expanded $ sh -x -c "ls [aA]*" + ls Ax ax <<< glob expansion Ax ax Steve

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Dennis Payne

Interesting. I see the same behavior. Near as I can tell bash decided that the alphabet is: aAbBcCdD... I wouldn't expect that to be the case but when I played around with various file name that was the behavior I saw. So [a-c] includes upercase B while [a-b] does not. 'ls [A-c]*' will show Berry but not apple. On Fri, 2015-06-19 at 09:29 -0400, Brett Russ wrote: > Can someone explain this to my evidently inadequately caffeinated > brain? I was trying to use a lower case character range wildcard to > list all files not starting with an uppercase letter and I noticed it > wasn't working as I'd expect. So I created this simple example and > still don't understand what's happening. > > Dir with two files: > > brett@spider /tmp/test $ \ls > apple Berry > > This is what I'd expect to see: > > brett@spider /tmp/test $ \ls [a-b]* > apple > > This makes no sense. Is this a bug?: > > brett@spider /tmp/test $ \ls [a-c]* > apple Berry > > From here on are just a few extra examples confirming the oddity of > the above. > > brett@spider /tmp/test $ \ls [a]* > apple > > brett@spider /tmp/test $ \ls [b]* > ls: cannot access [b]*: No such file or directory > > brett@spider /tmp/test $ \ls [c]* > ls: cannot access [c]*: No such file or directory > > brett@spider /tmp/test $ \ls a* > apple > > brett@spider /tmp/test $ \ls b* > ls: cannot access b*: No such file or directory > > brett@spider /tmp/test $ \ls c* > ls: cannot access c*: No such file or directory > > brett@spider /tmp/test $ dpkg -S `which ls` > coreutils: /bin/ls > > brett@spider /tmp/test $ dpkg -s coreutils > Package: coreutils > Essential: yes > Status: install ok installed > Priority: required > Section: utils > Installed-Size: 6020 > Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> > Architecture: amd64 > Multi-Arch: foreign > Version: 8.21-1ubuntu5.1 > [SNIP] > > > Thanks, > Brett > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Brett Russ

Ted, Chris, Thanks for straightening me out on this! Haven't had to pay much attention to locale before. Makes sense. -Brett On Fri, Jun 19, 2015 at 10:22 AM, Chris Thompson <wolcen(a)riseup.net> wrote: > Well, this may not get you only a subset of lower-case letters, but it > does at least limit to lower case: [[:lower:]]. More details below. > > e.g.: > > ls [[:lower:]]* > > Regards, > Chris > > See also: > > http://www.tldp.org/LDP/GNU-Linux-Tools-Summar/html/x11655.htm#STANDARD-WIL… > > > man 7 glob > ---------- > > Character classes and internationalization > Of course ranges were originally meant to be ASCII ranges, so > that "[ -%]" stands for "[ !"#$%]" and "[a-z]" stands > for "any lowercase letter". Some UNIX implementations > generalized this so that a range X-Y stands for the set of > characters with code between the codes for X and for Y. > However, this requires the user to know the character cod‐ > ing in use on the local system, and moreover, is not convenient > if the collating sequence for the local alphabet > differs from the ordering of the character codes. Therefore, > POSIX extended the bracket notation greatly, both for > wildcard patterns and for regular expressions. In the above we > saw three types of items that can occur in a bracket > expression: namely (i) the negation, (ii) explicit single > characters, and (iii) ranges. POSIX specifies ranges in > an internationally more useful way and adds three more types: > > (iii) Ranges X-Y comprise all characters that fall between X and > Y (inclusive) in the current collating sequence as > defined by the LC_COLLATE category in the current locale. > > (iv) Named character classes, like > > [:alnum:] [:alpha:] [:blank:] [:cntrl:] > [:digit:] [:graph:] [:lower:] [:print:] > [:punct:] [:space:] [:upper:] [:xdigit:] > > so that one can say "[[:lower:]]" instead of "[a-z]", and have > things work in Denmark, too, where there are three > letters past 'z' in the alphabet. These character classes are > defined by the LC_CTYPE category in the current > locale. > > On 06/19/2015 09:58 AM, Theodore Ruegsegger wrote: > > It looks like a locale issue. In the old "C" locale, sorting a list > > put all cap letters before all lowercase letters. In the "en_US.UTF-8" > > locale, apparently the Ubuntu default, they're sorted as in a regular > > dictionary, regardless of caps. > > > > For example: > > > > ls > > apple berry Berry charlie > > > > Hope that's more helpful than my first response! > > Ted > > > > On Fri, Jun 19, 2015 at 9:46 AM, Theodore Ruegsegger <gruntly(a)gmail.com> > wrote: > >> Disregard last transmission. I shoulda read your post more carefully. > >> > >> Ted > >> > >> On Fri, Jun 19, 2015 at 9:44 AM, Theodore Ruegsegger <gruntly(a)gmail.com> > wrote: > >>> b != B > >>> > >>> HTH, > >>> Ted > >>> > >>> On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss(a)alum.wpi.edu> > wrote: > >>>> Can someone explain this to my evidently inadequately caffeinated > brain? I > >>>> was trying to use a lower case character range wildcard to list all > files > >>>> not starting with an uppercase letter and I noticed it wasn't working > as I'd > >>>> expect. So I created this simple example and still don't understand > what's > >>>> happening. > >>>> > >>>> Dir with two files: > >>>> > >>>> brett@spider /tmp/test $ \ls > >>>> apple Berry > >>>> > >>>> This is what I'd expect to see: > >>>> > >>>> brett@spider /tmp/test $ \ls [a-b]* > >>>> apple > >>>> > >>>> This makes no sense. Is this a bug?: > >>>> > >>>> brett@spider /tmp/test $ \ls [a-c]* > >>>> apple Berry > >>>> > >>>> From here on are just a few extra examples confirming the oddity of > the > >>>> above. > >>>> > >>>> brett@spider /tmp/test $ \ls [a]* > >>>> apple > >>>> > >>>> brett@spider /tmp/test $ \ls [b]* > >>>> ls: cannot access [b]*: No such file or directory > >>>> > >>>> brett@spider /tmp/test $ \ls [c]* > >>>> ls: cannot access [c]*: No such file or directory > >>>> > >>>> brett@spider /tmp/test $ \ls a* > >>>> apple > >>>> > >>>> brett@spider /tmp/test $ \ls b* > >>>> ls: cannot access b*: No such file or directory > >>>> > >>>> brett@spider /tmp/test $ \ls c* > >>>> ls: cannot access c*: No such file or directory > >>>> > >>>> brett@spider /tmp/test $ dpkg -S `which ls` > >>>> coreutils: /bin/ls > >>>> > >>>> brett@spider /tmp/test $ dpkg -s coreutils > >>>> Package: coreutils > >>>> Essential: yes > >>>> Status: install ok installed > >>>> Priority: required > >>>> Section: utils > >>>> Installed-Size: 6020 > >>>> Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> > >>>> Architecture: amd64 > >>>> Multi-Arch: foreign > >>>> Version: 8.21-1ubuntu5.1 > >>>> [SNIP] > >>>> > >>>> > >>>> Thanks, > >>>> Brett > >>>> > >>>> _______________________________________________ > >>>> Wlug mailing list > >>>> Wlug(a)mail.wlug.org > >>>> http://mail.wlug.org/mailman/listinfo/wlug > >>>> > > _______________________________________________ > > Wlug mailing list > > Wlug(a)mail.wlug.org > > http://mail.wlug.org/mailman/listinfo/wlug > > > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > >

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Chris Thompson

Well, this may not get you only a subset of lower-case letters, but it does at least limit to lower case: [[:lower:]]. More details below. e.g.: ls [[:lower:]]* Regards, Chris See also: http://www.tldp.org/LDP/GNU-Linux-Tools-Summar/html/x11655.htm#STANDARD-WIL… man 7 glob ---------- Character classes and internationalization Of course ranges were originally meant to be ASCII ranges, so that "[ -%]" stands for "[ !"#$%]" and "[a-z]" stands for "any lowercase letter". Some UNIX implementations generalized this so that a range X-Y stands for the set of characters with code between the codes for X and for Y. However, this requires the user to know the character cod‐ ing in use on the local system, and moreover, is not convenient if the collating sequence for the local alphabet differs from the ordering of the character codes. Therefore, POSIX extended the bracket notation greatly, both for wildcard patterns and for regular expressions. In the above we saw three types of items that can occur in a bracket expression: namely (i) the negation, (ii) explicit single characters, and (iii) ranges. POSIX specifies ranges in an internationally more useful way and adds three more types: (iii) Ranges X-Y comprise all characters that fall between X and Y (inclusive) in the current collating sequence as defined by the LC_COLLATE category in the current locale. (iv) Named character classes, like [:alnum:] [:alpha:] [:blank:] [:cntrl:] [:digit:] [:graph:] [:lower:] [:print:] [:punct:] [:space:] [:upper:] [:xdigit:] so that one can say "[[:lower:]]" instead of "[a-z]", and have things work in Denmark, too, where there are three letters past 'z' in the alphabet. These character classes are defined by the LC_CTYPE category in the current locale. On 06/19/2015 09:58 AM, Theodore Ruegsegger wrote: > It looks like a locale issue. In the old "C" locale, sorting a list > put all cap letters before all lowercase letters. In the "en_US.UTF-8" > locale, apparently the Ubuntu default, they're sorted as in a regular > dictionary, regardless of caps. > > For example: > > ls > apple berry Berry charlie > > Hope that's more helpful than my first response! > Ted > > On Fri, Jun 19, 2015 at 9:46 AM, Theodore Ruegsegger <gruntly(a)gmail.com> wrote: >> Disregard last transmission. I shoulda read your post more carefully. >> >> Ted >> >> On Fri, Jun 19, 2015 at 9:44 AM, Theodore Ruegsegger <gruntly(a)gmail.com> wrote: >>> b != B >>> >>> HTH, >>> Ted >>> >>> On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss(a)alum.wpi.edu> wrote: >>>> Can someone explain this to my evidently inadequately caffeinated brain? I >>>> was trying to use a lower case character range wildcard to list all files >>>> not starting with an uppercase letter and I noticed it wasn't working as I'd >>>> expect. So I created this simple example and still don't understand what's >>>> happening. >>>> >>>> Dir with two files: >>>> >>>> brett@spider /tmp/test $ \ls >>>> apple Berry >>>> >>>> This is what I'd expect to see: >>>> >>>> brett@spider /tmp/test $ \ls [a-b]* >>>> apple >>>> >>>> This makes no sense. Is this a bug?: >>>> >>>> brett@spider /tmp/test $ \ls [a-c]* >>>> apple Berry >>>> >>>> From here on are just a few extra examples confirming the oddity of the >>>> above. >>>> >>>> brett@spider /tmp/test $ \ls [a]* >>>> apple >>>> >>>> brett@spider /tmp/test $ \ls [b]* >>>> ls: cannot access [b]*: No such file or directory >>>> >>>> brett@spider /tmp/test $ \ls [c]* >>>> ls: cannot access [c]*: No such file or directory >>>> >>>> brett@spider /tmp/test $ \ls a* >>>> apple >>>> >>>> brett@spider /tmp/test $ \ls b* >>>> ls: cannot access b*: No such file or directory >>>> >>>> brett@spider /tmp/test $ \ls c* >>>> ls: cannot access c*: No such file or directory >>>> >>>> brett@spider /tmp/test $ dpkg -S `which ls` >>>> coreutils: /bin/ls >>>> >>>> brett@spider /tmp/test $ dpkg -s coreutils >>>> Package: coreutils >>>> Essential: yes >>>> Status: install ok installed >>>> Priority: required >>>> Section: utils >>>> Installed-Size: 6020 >>>> Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> >>>> Architecture: amd64 >>>> Multi-Arch: foreign >>>> Version: 8.21-1ubuntu5.1 >>>> [SNIP] >>>> >>>> >>>> Thanks, >>>> Brett >>>> >>>> _______________________________________________ >>>> Wlug mailing list >>>> Wlug(a)mail.wlug.org >>>> http://mail.wlug.org/mailman/listinfo/wlug >>>> > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Theodore Ruegsegger

It looks like a locale issue. In the old "C" locale, sorting a list put all cap letters before all lowercase letters. In the "en_US.UTF-8" locale, apparently the Ubuntu default, they're sorted as in a regular dictionary, regardless of caps. For example: ls apple berry Berry charlie Hope that's more helpful than my first response! Ted On Fri, Jun 19, 2015 at 9:46 AM, Theodore Ruegsegger <gruntly(a)gmail.com> wrote: > Disregard last transmission. I shoulda read your post more carefully. > > Ted > > On Fri, Jun 19, 2015 at 9:44 AM, Theodore Ruegsegger <gruntly(a)gmail.com> wrote: >> b != B >> >> HTH, >> Ted >> >> On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss(a)alum.wpi.edu> wrote: >>> Can someone explain this to my evidently inadequately caffeinated brain? I >>> was trying to use a lower case character range wildcard to list all files >>> not starting with an uppercase letter and I noticed it wasn't working as I'd >>> expect. So I created this simple example and still don't understand what's >>> happening. >>> >>> Dir with two files: >>> >>> brett@spider /tmp/test $ \ls >>> apple Berry >>> >>> This is what I'd expect to see: >>> >>> brett@spider /tmp/test $ \ls [a-b]* >>> apple >>> >>> This makes no sense. Is this a bug?: >>> >>> brett@spider /tmp/test $ \ls [a-c]* >>> apple Berry >>> >>> From here on are just a few extra examples confirming the oddity of the >>> above. >>> >>> brett@spider /tmp/test $ \ls [a]* >>> apple >>> >>> brett@spider /tmp/test $ \ls [b]* >>> ls: cannot access [b]*: No such file or directory >>> >>> brett@spider /tmp/test $ \ls [c]* >>> ls: cannot access [c]*: No such file or directory >>> >>> brett@spider /tmp/test $ \ls a* >>> apple >>> >>> brett@spider /tmp/test $ \ls b* >>> ls: cannot access b*: No such file or directory >>> >>> brett@spider /tmp/test $ \ls c* >>> ls: cannot access c*: No such file or directory >>> >>> brett@spider /tmp/test $ dpkg -S `which ls` >>> coreutils: /bin/ls >>> >>> brett@spider /tmp/test $ dpkg -s coreutils >>> Package: coreutils >>> Essential: yes >>> Status: install ok installed >>> Priority: required >>> Section: utils >>> Installed-Size: 6020 >>> Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> >>> Architecture: amd64 >>> Multi-Arch: foreign >>> Version: 8.21-1ubuntu5.1 >>> [SNIP] >>> >>> >>> Thanks, >>> Brett >>> >>> _______________________________________________ >>> Wlug mailing list >>> Wlug(a)mail.wlug.org >>> http://mail.wlug.org/mailman/listinfo/wlug >>>

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Theodore Ruegsegger

Disregard last transmission. I shoulda read your post more carefully. Ted On Fri, Jun 19, 2015 at 9:44 AM, Theodore Ruegsegger <gruntly(a)gmail.com> wrote: > b != B > > HTH, > Ted > > On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss(a)alum.wpi.edu> wrote: >> Can someone explain this to my evidently inadequately caffeinated brain? I >> was trying to use a lower case character range wildcard to list all files >> not starting with an uppercase letter and I noticed it wasn't working as I'd >> expect. So I created this simple example and still don't understand what's >> happening. >> >> Dir with two files: >> >> brett@spider /tmp/test $ \ls >> apple Berry >> >> This is what I'd expect to see: >> >> brett@spider /tmp/test $ \ls [a-b]* >> apple >> >> This makes no sense. Is this a bug?: >> >> brett@spider /tmp/test $ \ls [a-c]* >> apple Berry >> >> From here on are just a few extra examples confirming the oddity of the >> above. >> >> brett@spider /tmp/test $ \ls [a]* >> apple >> >> brett@spider /tmp/test $ \ls [b]* >> ls: cannot access [b]*: No such file or directory >> >> brett@spider /tmp/test $ \ls [c]* >> ls: cannot access [c]*: No such file or directory >> >> brett@spider /tmp/test $ \ls a* >> apple >> >> brett@spider /tmp/test $ \ls b* >> ls: cannot access b*: No such file or directory >> >> brett@spider /tmp/test $ \ls c* >> ls: cannot access c*: No such file or directory >> >> brett@spider /tmp/test $ dpkg -S `which ls` >> coreutils: /bin/ls >> >> brett@spider /tmp/test $ dpkg -s coreutils >> Package: coreutils >> Essential: yes >> Status: install ok installed >> Priority: required >> Section: utils >> Installed-Size: 6020 >> Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> >> Architecture: amd64 >> Multi-Arch: foreign >> Version: 8.21-1ubuntu5.1 >> [SNIP] >> >> >> Thanks, >> Brett >> >> _______________________________________________ >> Wlug mailing list >> Wlug(a)mail.wlug.org >> http://mail.wlug.org/mailman/listinfo/wlug >>

June 19, 2015

Re: [Wlug] ls character range wildcard oddity?

by Theodore Ruegsegger

b != B HTH, Ted On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss(a)alum.wpi.edu> wrote: > Can someone explain this to my evidently inadequately caffeinated brain? I > was trying to use a lower case character range wildcard to list all files > not starting with an uppercase letter and I noticed it wasn't working as I'd > expect. So I created this simple example and still don't understand what's > happening. > > Dir with two files: > > brett@spider /tmp/test $ \ls > apple Berry > > This is what I'd expect to see: > > brett@spider /tmp/test $ \ls [a-b]* > apple > > This makes no sense. Is this a bug?: > > brett@spider /tmp/test $ \ls [a-c]* > apple Berry > > From here on are just a few extra examples confirming the oddity of the > above. > > brett@spider /tmp/test $ \ls [a]* > apple > > brett@spider /tmp/test $ \ls [b]* > ls: cannot access [b]*: No such file or directory > > brett@spider /tmp/test $ \ls [c]* > ls: cannot access [c]*: No such file or directory > > brett@spider /tmp/test $ \ls a* > apple > > brett@spider /tmp/test $ \ls b* > ls: cannot access b*: No such file or directory > > brett@spider /tmp/test $ \ls c* > ls: cannot access c*: No such file or directory > > brett@spider /tmp/test $ dpkg -S `which ls` > coreutils: /bin/ls > > brett@spider /tmp/test $ dpkg -s coreutils > Package: coreutils > Essential: yes > Status: install ok installed > Priority: required > Section: utils > Installed-Size: 6020 > Maintainer: Ubuntu Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> > Architecture: amd64 > Multi-Arch: foreign > Version: 8.21-1ubuntu5.1 > [SNIP] > > > Thanks, > Brett > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

June 19, 2015