October 2004 - WLUG - wlug.mailman3.com

Re: [Wlug] Re:FireFox

by Keith Wright

> From: Micheal Bonner <BiggDaddyCool(a)peoplepc.com> > > Hello.. I am trying to make my firefox work with my Thunderbird I don't use Thunderbird, but I don't think your question depends on that. > but I dont understand one thing > when you say.... Change the paths to point to this executable shell script: > > How do you do this ... To save you from typing the complete path to an executable command, and to save the shell from searching your whole disk, bash (the shell) keeps a list of directories in which it searches for executable files. It keeps this as a colon separated list in the variable $PATH. You can see what it is by typing echo $PATH to a shell prompt. You usually set this variable by including, in the file .bash_profile in your home directory, the following lines PATH=$PATH:$HOME/bin export PATH This adds the ~/bin directory in your home directory to whatever was in the path before. The .bash_profile is executed whenever you log in. Then it will find executable files in that directory. Next I have the file 'firebird' in that ~/bin directory. $ ls -l firebird -rwxr--r-- 1 kwright kwright 70 Oct 29 2003 firebird Note the "x" among the permissions. This means I am allowed to execute the file. You can add the "x" by chmod u+x firebird while in the ~/bin directory. Finally, the contents of the file are $ cat firebird #!/bin/bash /home/kwright/build/Firebird-0.7.0/MozillaFirebird $1 & Of course you change /home/kwright/build to wherever you put the Firebird directory (and use your no-doubt newer version number, I'll get to it one day) > is this a file or do you do it in konsole and > what is the path that you should change it too .. Oh, oh! Is 'konsole' a KDE program? I don't use KDE either, I have given you directions for getting the command 'firebird' to work at a shell prompt. In Gnome the next refinement is to right click in the control panel, choose: Add to Panel >>> Launcher, and type the shell command i.e. 'firebird' into the form next to "command". That adds an icon to the control panel that types the command for you. I assume KDE does something similar. > thanks for your help .. and please forgive that i am a newbie I have no problem with someone asking questions, but that word "newbie" gets on my nerves sometimes. Why can't we all be something in the dictionary---like beginners or learners. -- Keith

Oct. 16, 2004

G-mail invites

by RV

I guess my request might be late, but if yo9u have any invites left, I would love one. Thanks, Rafael

Oct. 16, 2004

RE: [Wlug] mounting a pen drive (usb)

by Martin, Eric

Prob the automounter... There should be a dir /mnt/auto? I know knoppix uses that a lot -----Original Message----- From: Gregory Avedissian [mailto:gma2004@verizon.net] Sent: Thursday, October 14, 2004 12:32 PM To: Worcester Linux Users Group Subject: Re: [Wlug] mounting a pen drive (usb) SuSE 9.1 will automatically mount and unmount a pen drive, floppy disk or cd. I haven't yet figured out how it does that. Greg Ryan Caron wrote: > Assuming you do not have any other usb devices hooked up to your > laptop, > adding the following line to your /etc/fstab will allow you to mount and > use your pen drive as a non-root user: > > /dev/sda1 /mnt/sda1 vfat user,noauto,exec 0 0 > > Using this method, you will have to type "mount /mnt/sda1" when you > insert > it and "umount /mnt/sda1" when you are done. > > I cannot stress how important it is to unmount! Failure to do so will > either leave your pen drive without the changes you made or with data > corruption (I know this from experience) > > If anybody knows of a way for linux to mount automatically do this I > am > all ears (switching the noauto parameter to auto doesn't do the trick). > > Sincerely, > Ryan Caron > > > >>Message: 7 >>Date: Thu, 14 Oct 2004 09:55:05 -0400 >>From: Walt Sawyer <wsawyer(a)norfolk-county.com> >>Subject: [Wlug] mountng a pen drive (usb) >>To: Worcester Linux Users Group <wlug(a)mail.wlug.org> >>Message-ID: <1097762105.2591.9.camel(a)localhost.localdomain> >>Content-Type: text/plain >> >>How do I get my SanDisk cruzer mini 256 mb pen drive to mount on my >>Fedora Core 2 laptop? Thanks in advance >>Walt > > > _______________________________________________ > 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

Oct. 15, 2004

RE: [Wlug] NFS question

by Jeff Moyer

==> Regarding RE: [Wlug] NFS question; Andy Stewart <andystewart(a)comcast.net> adds: andystewart> -----BEGIN PGP SIGNED MESSAGE----- Hash> SHA1 andystewart> On Thursday 14 October 2004 10:09 am, Jeff Moyer wrote: >> The one hardware component you may need to buy would be a fencing >> device. >> andystewart> I have a "fencing device" - its a 4' long wooden replica of a andystewart> German longsword. You could beat the computer with it if you andystewart> get frustrated. ;-) andystewart> Cost: $90 - handmade Everyone's a comedian. ;) I/O fencing - n. The act of isolating a rogue program or computer from a shared storage medium. This is a term used in clustering, whereby one node is determined to be in an unknown state and, in order to perform recovery, it must be kept from writing any further data to the shared storage. Common methods of fencing include, but are not limited to: STONITH - "The big hammer" approach. Stands for Shoot The Other Node In The Head. Also known as STOMITH, where M is Member. Effected by the use of remote power switches, this is a common fencing method in Linux clusters. Essentially, each node has access to the power switch for each other node. In the event of a node failure, a surviving member will reset power on the failed node. SCSI Reservations - A part of the SCSI standard, reservations restrict access to storage to the device which issued the reservation. In Digital Clusters (later Compaq TruClusters), DAIO (pronounced day-o, Direct Access I/O) disks were turned into served disks, and "owned" by one member of the cluster. This member would issue the SCSI RESERVE command for the disk, and other members wishing to initiate I/O to this disk would have to go through the server. This is not anything as crude as NFS. Remember Digital had its proprietary Memory Channel bus, which is used to issue the I/O requests and get responses. SCSI Reservations can be broken by the holder issuing a Release command, or by any type of reset (bus, power). Because of this, it has been historically problematic (most O/S's will reset the SCSI bus on boot). So, when a node is determined to be in an unknown/unsafe state, the cluster will clear its reservation (by issuing a reset to the device) and another node will take over serving the disk. Persistent Reservations - A newer form of the Reservation above, persistent reserves persist across bus resets and, on some (most) devices, across power cycles. The concept of a "group reservation" was introduced to support clustering. Basically, when a node boots, it can "register" itself with the disk. When each member of the cluster has booted and registered (and, of course, has quorum), then one member will issue the group reservation command. This restricts access to the disks to those nodes registered. (In this case, I use the term node, but really mean initiator). In order to "fence" a member of the cluster, a node can preempt another node's reservation. Fencing at the Fibre Channel switch level - Most fibre channel switches allow partitioning of targets. One can, for example, limit access to a given target on the FC switch to a subset of initiators. This is done through the management interface for the device. GFS, for example, can be configured to use this method of fencing. Watchdog Timers - A watchdog timer is a means to determine application health. Essentially, an application starts the timer, and then must "pet the dog" at a given interval. Failure to pet the dog (reset the timer) will result in the watchdog rebooting the system. Watchdog timers come in two forms, hardware and software. Hardware timers are obviously preferred to software timers. I would not recommend watchdog timers in general as a fencing device because there is no way for another node to guarantee that a member has removed itself from the cluster. While communications with the node may have been cut off, it is not guaranteed that the node will not issue any further I/O to shared storage. Note that a hardware watchdog timer can be used safely as a fencing device, but it depends highly on the implementation. It's easier to mess this one up than the other methods. Also, I use the term "fencing device" loosely, here, since no other node is performing an action which isolates this node from shared storage. Now, back to my regularly scheduled coding... -Jeff

Oct. 15, 2004

Re: [Wlug] Re:FireFox

by Brett Russ

On Fri, 15 Oct 2004 06:03:47 -0400, Micheal Bonner <biggdaddycool(a)peoplepc.com> wrote: > Hello.. I am trying to make my firefox work with my Thunderbird > but I dont understand one thing > when you say.... Change the paths to point to this executable shell script: > > How do you do this ... is this a file or do you do it in konsole and > what is the path that you should change it too .. Create the script I mentioned here: http://paramount.ind.wpi.edu/pipermail/wlug/2004-October/004222.html as a new file (call it launch-firefox). I would recommend making a 'bin' directory under your home directory (mkdir ~/bin), create the script in that dir using an editor like kate or something easy, then add execute permissions (chmod 755 ~/bin/launch-firefox). Make sure you change the path *inside* the script (export MOZILLA_FIVE_HOME=/path/to/firefox/dir) to point to the dir that you have firefox installed in. I know this might sound complicated and it shouldn't need to be this way but firefox is still prerelease software and on Linux there's less people trying to make things easier. The typical Linux user does it their own way anyway. Keep asking questions...the only way to learn, BR

Oct. 15, 2004

Re:FireFox

by Micheal Bonner

Hello.. I am trying to make my firefox work with my Thunderbird but I dont understand one thing when you say.... Change the paths to point to this executable shell script: How do you do this ... is this a file or do you do it in konsole and what is the path that you should change it too .. thanks for your help .. and please forgive that i am a newbie

Oct. 15, 2004

Re: [Wlug] mountng a pen drive (usb)

by Walt Sawyer

Thanks! That did it; it works great! Walt On Thu, 2004-10-14 at 10:21, Gina Minks wrote: > = > > How do I get my SanDisk cruzer mini 256 mb pen drive to mount on my > Fedora Core 2 laptop? > > > Check to see if the pen has already been recognized by hotplug by checking for an entry in /etc/fstab > > If there is not an entry there, check to see if the OS recognizes the pen. Lots of places to check.. > > cat /etc/proc/scsi/scsi > > you should see: > Attached devices: > Host: scsi0 Channel: 00 Id: 00 Lun: 00 > Vendor: SanDisk Model: Cruzer Mini Rev: 0.1 > Type: Direct-Access ANSI SCSI revision: 02 > > or look for it in dmesg: > dmesg | grep San > Vendor: SanDisk Model: Cruzer Mini Rev: 0.1 > > or in /etc/sysconfig/hwconf: > grep San hwconf > desc: "SanDisk Corporation Cruzer Mini" > usbmfr: SanDisk Corporation > desc: "Sandisk Cruzer Mini" > > If the OS recognizes the pen, most likely updfstab does not have an entry for it. For RH9, entries for updfstab are in /etc/updfstab.conf.default > > This is the file hotplug uses to know what to write to the fstab file so you can mount the pen. > > I added an entry to the "flash" stanza: > > device flash { > partition 1 > match hd CompactFlash > match hd ImageMate > match hd SanDisk > match hd "USB Drive" > > > Once you add that, look in the fstab file to see if hotplug worked. > > You will still have to mount it, it should show up as /mnt/flash > > > -Gina > > > > > > _______________________________________________ > 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 >

Oct. 15, 2004

RE: [Wlug] NFS question

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thursday 14 October 2004 10:09 am, Jeff Moyer wrote: > > The one hardware component you may need to buy would be a fencing device. > I have a "fencing device" - its a 4' long wooden replica of a German longsword. You could beat the computer with it if you get frustrated. ;-) Cost: $90 - handmade - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBbyxZHl0iXDssISsRAikiAJ9GoocRinLAkLfUDaRNJxIk6OJv5wCfeLKE nVJuse9fSsw7FCJuWnnAOyg= =XOsI -----END PGP SIGNATURE-----

Oct. 15, 2004

Re: [Wlug] mountng a pen drive (usb)

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thursday 14 October 2004 9:55 am, Walt Sawyer wrote: > How do I get my SanDisk cruzer mini 256 mb pen drive to mount on my > Fedora Core 2 laptop? > Thanks in advance > Walt HI Walt, I always double check to insure that USB devices are supported by Linux. One place to check is: http://www.qbik.ch/usb/devices/ It helps to know the vendor ID and device ID of your device before checking this site, since sometimes the marketing name of the device changes (or varies in different countries). You can find the vendor and device IDs with the command "lsusb" or the GUI "usbview", or "cat /proc/bus/usb/devices". In my experience, with this info, and consulting the aforementioned website, if the site says it works, it will work. I checked your device and it appears that it should work, but double check with the vendor and device IDs to be sure. If usbview (or the others) sees the device, that's good, but it doesn't always mean that the device will work with Linux. The hotplug system should have installed the kernel modules for you. If you try "fdisk -l" (letter ell), you should see a new SCSI device (that's how USB "disks" (pen drives, etc) show up). It would be in the form: /dev/sdXY. If fdisk doesn't show it, check your kernel modules and your system log (/var/log/messages). Yes...I've been through this a few dozen times..... :-) often to no avail. Be careful what you purchase. I've also discovered that some flavors of kernel 2.6.x have problems with USB. After communicating with Greg Kroah-Hartman (kernel USB developer), he fixed a couple of things, and then I ended up moving to kernel version 2.6.8.1. I had fewer problems with the later 2.4 kernels, but thankfully 2.6.8.1 is working nicely for my USB devices. Later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBbytZHl0iXDssISsRAtLgAJ9gR8OtvONdQKkfmVi44KVrVst4RQCeKo4p eBJojmRxM3/E1dpGEvgMpGQ= =6hEI -----END PGP SIGNATURE-----

Oct. 15, 2004

Re: [Wlug] Re: Wlug Digest, Vol 12, Issue 11

by Mike Frysinger

On Thursday 14 October 2004 07:52 pm, Arturo wrote: > Cool, > If there are any left I would love g-mail account as well! sent ... i still got 4 left (i dont have any friends :() -mike

Oct. 15, 2004