meeting topic
by Mike Leo
Am I wrong, or is the gentoo install insanely comlicated?
Although I did not sit in front of it from start to finish, it seems like an install takes hours
and hours of work...
I followed the Handbook (some 80 pages of documentation), which i'm sure is very accurate and each
step worked as advertised, but in the end it was too much.
After an install of debian, which takes me less than 20 minutes, this was too much for my poor
little brain to take, and I eventually gave up.
In addition to that, I can't for the life of me, get slackware to consistantly install lilo
correctly during the install.
Any comments on either of these would be apreciated, however, I am just writing this to toss my
vote in for a linux install fest as a meeting topic.
I have no problem bringing in a laptop to show the simple, eligant, streamlined, 20 minute debian
install, but I would like to also see someone go through a gentoo install, and assist on a
slackware lilo config...all of which can be done via my laptop if needed.
Thanks !
Mike
13 years, 7 months
Re: [Wlug] getting that cpu to sleep ...
by Jamie Guinan
Hi, I just joined the list and was looking through some of the
archives.
> I have a question for those linux programmers out there. i'm writing
> a program on linux (kubuntu to be specific) that requires
> high-precision timing, somewhere on the order of 100 to 1000 micro
> seconds.
<snip>
> The problem with this approach is that the process uses 99% of the
> CPU since it just spins the CPU until enough time has expired.
You can get up to 1/8192Hz (122us) periodic interrupts with the x86
RTC timer. You might have to do a little setup, like,
# modprobe rtc
# echo 8192 > /proc/sys/dev/rtc/max-user-freq
[ fiddle permissions on /dev/misc/rtc or /dev/rtc unless you
are running your app as root ]
See Documentation/rtc.txt in the kernel source for programming
details. Basically the kernel is free to idle or run other things
until the RTC interrupt hits, then it wakes up your app doing
read() or poll() on /dev/rtc.
I used this to pulse a hardware register in a project I did a few
years ago, worked good enough for my purposes. You might lose an RTC
interrupt here and there if your system is under heavy load (call it
"soft realtime"), but I think the interface tells you if and how many
you lost.
There's also the more advanced HPET timer available for newer x86
systems, but I haven't looked at that yet.
Good luck,
-Jamie Guinan
13 years, 7 months
JOB: Seeking Unix SysAdmin
by Andy Stewart
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi Everybody,
If you are interested in the following job opportunity, please reply
directly to bburns(a)m-Qube.com (Barbara Burns).
=====start=====
m-Qube, located in Boston, is the premiere mobile messaging management
technology company in America and we operate a high-volume wireless
messaging ASP.
We are currently conducting a search for an experienced Systems
Administrator who will be responsible for keeping this
Linux/Java/J2EE-based server environment monitored and operational on a
24X7 basis.
Responsibilities
* Server Administration and Management
1. Configuration, administration and tuning of a high-performance Linux
computing environment including new server deployment and setup
2. Develop and maintain scripts for monitoring and automation of
periodic jobs
3. Provide problem isolation and resolution using software and
diagnostics and/or crash/dump analysis
4. Administration of archive and backup systems
5. Perform ongoing capacity planning activities based on company growth
6. Serve as a system admin knowledge resource for persons throughout the
organization
7. Available 24x7 for system emergencies
* SAN Storage Administration
1. Maintain existing SAN storage infrastructure
2. Add and reconfigure storage to meet demands of the business
3. Use SAN technology to create backups for disaster recovery
* Network Administration
1. Manage network devices including switches, routers and load balancers
2. Resolve issues with network
3. Review logs and run periodic health checks on infrastructure
Qualifications:
You must have extensive hands-on experience in a high-availability Linux
environment with Apache, JBOSS, load balancing and SSL configurations.
Your added assets will be an understanding of application programming in
Java/JSP, Perl/Javascript or XML interfaces. You have some experience
maintaining Cisco network equipment.
Candidate must have strong work ethic and possess the ability to perform
under time constraints in a dynamic environment. Managing multiple
priorities while completing them simultaneously is a basic
requirement.The individual must possess excellent skills in
troubleshooting complex network environments and devices on his/her own.
Experience:
Qualified candidates should posses experience in the following:
Enterprise-class Linux environments with 5 years of experience
Experience with Linux server technologies including NFS, NIS, LDAP,
kickstart, etc.
Familiarity with engineering tools such as CVS and Bugzilla
Proficient in scripting including PERL, Shell, Awk or Sed
Extensive operations experience including
o Experience analyzing and resolving problems associated with server
hardware, server operating system and applications software
o Capacity to perform a wide variety of tasks in software/hardware
maintenance and operational support of server systems
o Strong knowledge and experience with backup policies and emergency
recovery procedures
Some experience working with the following is preferred:
Routing protocol and router administration
Maintenance of Java, XML and SQL web applications
Education:
BS degree in Information Systems or related area desired
Please respond directly to Barbara Burns at bburns(a)m-qube.com 617.673.2474
=====end=====
- --
Andy Stewart, Founder
Worcester Linux Users' Group
Worcester, MA, USA
http://www.wlug.org
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13 years, 7 months
SSH Tunneling?
by Michael Zarozinski
Hi all,
I'm in the process of moving a web site, msql db, and some game daemons
to a new server. While the DNS transfer is in process we want all
traffic to go to the new server. I've been told this can be done vial
ssh tunnels but don't have any experience.... can anyone point me in the
right direction? Do I need to set up a tunnel for every port on the old
server (the games open ports)? How is it set up to run all the time? Do
I need to mess with sshd_config?
Any and all help is appreciated!
Thanx!
Michael Z
13 years, 7 months
Rough upgrade to FC4
by Bill Mills-Curran
I just upgraded to FC4 from FC3 and I had some troubles that should
not have happened. My FC3 system was current with updates, and I used
downloaded ISO's from fedora. The problem was that many of the FC3
packages were more up to date than the FC4 packages, so the upgrade
did not install them. This included the kernel. I felt lucky that I
had a workable system.
Running up2date did not help -- I was still in an FC3 system (kind of).
I manually installed the FC4 kernel and ran up2date again, but it was
stuck on many packages, because up2date only wanted to freshen
existing rpm's -- it didn't want to add any new ones to solve
dependencies.
After much arm-wrestling (floundering?), I gave up on the GUI up2date
and ran with the command line, feeding it chunks of rpms that needed
updating.
I feel lucky that I didn't brick my system. What did I do wrong?
This must be a common occurance. I have another system that I need to
upgrade, but I don't want it to go like this. What's a better way?
Thanks,
Bill
13 years, 7 months
Re: Rough upgrade to FC4
by Joshua D. Abraham
On Sun, Jan 22, 2006 at 10:24:43PM -0500, nmeyers(a)javalinux.net wrote:
> On Sun, Jan 22, 2006 at 10:13:27PM -0500, Bill Mills-Curran wrote:
> > I just upgraded to FC4 from FC3 and I had some troubles that should
> > not have happened. My FC3 system was current with updates, and I used
> > downloaded ISO's from fedora. The problem was that many of the FC3
> > packages were more up to date than the FC4 packages, so the upgrade
> > did not install them. This included the kernel. I felt lucky that I
> > had a workable system.
>
> Sorry to hear things haven't gotten any better since my days as
> an RH user (pre-RH9). I never experienced a smooth upgrade; sometimes
> had to just rebuild the system.
>
Agreed. I have been using Redhat since 6.2. I had partitions setup the
following way
/boot
/
swap
/home
/usr/local/
This way I can keep the users data and just install a new system over
it. I think that Debian's method of package management is the best of
any of the Linux Distro's. I a year ago I switched from FC3 to Ubuntu
because Ubuntu has a 6 month release cycle, similar to FC and Ubuntu
pays individuals to fix security vulnerabilities.
--Josh
> I drifted from RH to Mandrake (pre-Mandriva) and then to Gentoo.
> Though not without the occasional bump, I've found Gentoo's approach to
> package management the least violent of them all.
>
> Nathan
>
> >
> > Running up2date did not help -- I was still in an FC3 system (kind of).
> >
> > I manually installed the FC4 kernel and ran up2date again, but it was
> > stuck on many packages, because up2date only wanted to freshen
> > existing rpm's -- it didn't want to add any new ones to solve
> > dependencies.
> >
> > After much arm-wrestling (floundering?), I gave up on the GUI up2date
> > and ran with the command line, feeding it chunks of rpms that needed
> > updating.
> >
> > I feel lucky that I didn't brick my system. What did I do wrong?
> > This must be a common occurance. I have another system that I need to
> > upgrade, but I don't want it to go like this. What's a better way?
> >
> > Thanks,
> > Bill
> > _______________________________________________
> > Discuss mailing list
> > Discuss(a)blu.org
> > http://olduvai.blu.org/mailman/listinfo/discuss
> >
> _______________________________________________
> Discuss mailing list
> Discuss(a)blu.org
> http://olduvai.blu.org/mailman/listinfo/discuss
13 years, 8 months
Subject: Re: [Wlug] Trial By Fire
by Tom Misilo
for all mozilla packages visit their project dir
heres a link for thunderbird
http://suse.cs.utah.edu/projects/mozilla/thunderbird/1.5/
for all the mozilla stuff
http://suse.cs.utah.edu/projects/mozilla/
Tom
> On 1/21/06, Marie MacDonald <mimsresearch(a)gmail.com> wrote:
> > Do downloadable software packages for Linux come with intallers?
>
> It depends. Many do but some require a few more steps. If you stick
> with installing SW via yast, you'll have the easiest time.
>
> > Can anyone help with advice for YaSt? Is my issue with the Thunderbird
> > 1.5 package perhaps?
>
> Perhaps the recent Novell distro is different, but I've never seen
> Thunderbird in the Yast repository (I'm still using SuSE 9.3).
> Anytime I want Firefox or Thunderbird, I go direct to
> http://www.mozilla.com and download it there. What you download there
> has an installer built in.
>
> > Quite frankly if it's this hard (frustrating!) to install software, I'm
> > not gonna be a happy gal. I still have other things I want to add to
> > this snappy little computer (i.e. my Palm) but darn there's gotta be an
> > easier way. Spring semester starts 26 January and I need this up and
> > running.
>
> You sound determined and that's probably the most important trait for
> someone trying to stick with Linux. Stick with YaST as much as
> possible and post here for other specific questions--we'll get you
> through.
>
> BR
13 years, 8 months
Perl Unicode question
by Skip Gaede
Folks,
I'm trying to understand how Unicode works in Perl 5.8.7, and things are not
working the way they're described in perluniintro. In particular, I have a
file encoded in UTF-8 from Perl, that I want to convert to Windows Unicode
(UCS-16LE). The intro provides this snippet for converting from one
character set to another:
open(my $nihongo, '<:encoding(iso2022-jp)', 'text.jis');
open(my $unicode, '>:utf8', 'text.utf8');
while (<$nihongo>) { print $unicode }
When I try that, substituting UTF-8 and ':encoding(UTF-16LE)', I get no
warnings, but the output has twice as many characters as it should have and
they are all NULLs.
I can supply a my UTF-8 file if anyone wants to have a try. In particular, I
think the fact that I have embedded apostrophes (0x27) encoded as RIGHT
SINGLE QUOTATION MARK (0x2019) may be part of the problem.
Thanks,
Skip
13 years, 8 months
Trial By Fire
by Marie MacDonald
Greetings All!
You may recall a while back I was asking questions about Linux laptops
and video capture and editing software for Linux
As luck would have it, I was given a shiny new (well, slightly used)
Linux desktop compuer. It is running the Novell distro (see I'm
learning!!) and I'm loving it.
As fate would have it, my laptop died two days ago and this Linux system
is all I have left. I no longer have the luxury of time to fiddle and
learn. I am working my way through that Novell Linux Desktop free online
training, but for some reason that's not allowing me to log in. That's
not my question though.
No matter how hard I try, I can't install software. I have read the
manual and I know how to log in to the root system and activate YaST. I
was trying to install Thunderbird 1.5. But I'm enjoying using Evolution,
so perhaps I'll forgo Thunderbird for now. I just could not get YaST to
recognize or "see" the Thunderbird package. I even figured out "change
source of installation", all to no avail.
Do downloadable software packages for Linux come with intallers?
Can anyone help with advice for YaSt? Is my issue with the Thunderbird
1.5 package perhaps?
Quite frankly if it's this hard (frustrating!) to install software, I'm
not gonna be a happy gal. I still have other things I want to add to
this snappy little computer (i.e. my Palm) but darn there's gotta be an
easier way. Spring semester starts 26 January and I need this up and
running.
Thanks for any advice, support, shoulders to cry on
Marie
mimsresearch(a)gmail.com
13 years, 8 months
For Sale: Alpha PWS 600AU
by Phillip G Deneault
600mhz Alpha with 384megs of ram. On board sound and LAN.
This is a REAL AU model, with the qlogic SCSI card and the powerstorm
video card(in case you wanted to run OpenVMS). I would recommend using
a different video card or using the serial console for anything BSD or
Linux.
I believe it has a 9 gig SCSI disk in it, but I've suplemented it with a
50gig IDE drive on the IDE chain. I've also replaced the IDE CD-ROM
with an 68-pin SCSI CD-ROM(yes, thats right, 68-pin).
I also have all the original docs with it.
I was running FreeBSD 5.3 on it until a week ago when I upgraded the
machine. Nice little hobby system.
$200 bucks or best offer. If anyone has any questions, or wishes to
haggle, please reply to me(and not the list, they hate that).
Thanks,
Phil
13 years, 8 months
