Discuss July 2011

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315 participants
287 discussions

Lock files in scripts
by Kenneth Porter 13 Jul '11

13 Jul '11

I was about to ask here how to do proper locking in a bash script when I found a page that addressed my objections to the race conditions I was finding in most sample code: <http://www.davidpashley.com/articles/writing-robust-shell-scripts.html> I just wanted to pass on the link to anyone else that needs this. One thing not addressed is how to deal with an orphaned lock file (eg. if the system crashes with the lock held). He stores the PID in the lock file, so one could look up the matching process and see if it's the script that's expected to create it. Otherwise one should be safe in deleting the lock file and trying again.

2 2

how to get data from syslog for a specific date range?
by Rudi Ahlers 13 Jul '11

13 Jul '11

Hi all, Can someone please tell me, or point me in the right direction ( I have googled, with little luck) on how to get data from /var/logs/messages (and other log files) for a specified fe days (i.e 19 - 30 June 2011) ? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

4 4

Setting hostname and network settings in 6.0 text mode installer
by Joe Mata 13 Jul '11

13 Jul '11

I'm doing my first 6.0 install the same way as I've always done my server installs -- in text mode. But it looks like there's no option to do the following in the 6.0 text mode installer? * Set hostname * Set network settings * Choose packages I really hope I'm missing something because having to use a GUI to install a server is incredibly painful. Cheers

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Centos 6 Server has no GUI
by Keith Beeby 13 Jul '11

13 Jul '11

Hi, So first daft question with Centos 6 (someone had to be first!) I've setup Centos 6 as a Server but as with Centos 5 it used to boot into the GUI but v6 doesn't do this, startx etc doesn't seem to work to launch the GUI Any suggestions on how I can get this to work? Thank you Keith

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Repositories for CentOS 6
by Edson - PMSS 13 Jul '11

13 Jul '11

Which extra repositories can be used with CentOS 6? -- Edson D. Amaral Pref. Mun. de São Sebastião - SP

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EL4 and spamassassin info
by R - elists 13 Jul '11

13 Jul '11

greetings, have been google foo for week or so. used to be super easy to upgrade spamassassin on CentOS dist. just grab the tarball and put in right spot and rpmbuild -tb spamassassin-3.somethingsomething.tar.gz then rpm or yum install and done would take just a few minutes. Yet... in regards to EL4 / CentOS 4 and spamassassin, it appears the end of the road for .spec in SA tarball evidentally some admins had a hard time doing the above for some perl issues. we havent had urgent need to upgrade one of our legacy mail servers that is still on 4. that will change of course with Centos6 out now. this is, did anyone roll a spamassassin 3.3.2 for CentOS4 / EL4 yet? tips or share rpms please? - rh

3 2

PXE booting centos6
by Nathan 13 Jul '11

13 Jul '11

Hello I am trying to PXE boot centos6 but i get an error, Seetings are: PXE server is a cobbler centos5 machine trying to boot a centos6 client Traceback (most recent call first): File "<string>", line 64, in __iter__ File "/usr/lib/yum-plugins/whiteout.py", line 46, in postreposetup_hook for event, elem in iterparse(infile): File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 179, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/python2.6/site-packages/yum/repos.py", line 83, in doSetup self.ayum.plugins.run('postreposetup') File "*/usr/lib/python2.6/site-packages/yum/*__init__.py", line 515, in _getRepos self._repos.doSetup(thisrepo) File "*/usr/lib/python2.6/site-packages/yum/*__init__.py", line 507, in doRepoSetup return self._getRepos(thisrepo, True) File "/usr/lib/anaconda/yuminstall.py", line 1283, in <lambda> self.__withFuncDo(anaconda, lambda r: self.ayum.doRepoSetup(thisrepo=r.id), File "/usr/lib/anaconda/yuminstall.py", line 1313, in __withFuncDo fn(repo) File "/usr/lib/anaconda/yuminstall.py", line 1285, in doRepoSetup callback=RepoSetupPulseProgress(anaconda.intf)) File "/usr/lib/anaconda/yuminstall.py", line 1243, in doBackendSetup self.doRepoSetup(anaconda) File "/usr/lib/anaconda/backend.py", line 285, in doBackendSetup if anaconda.backend.doBackendSetup(anaconda) == DISPATCH_BACK: File "/usr/lib/anaconda/dispatch.py", line 208, in moveStep rc = stepFunc(self.anaconda) File "/usr/lib/anaconda/dispatch.py", line 126, in gotoNext self.moveStep() File "/usr/lib/anaconda/dispatch.py", line 231, in currentStep self.gotoNext() File "/usr/lib/anaconda/text.py", line 593, in run (step, instance) = anaconda.dispatch.currentStep() File "/usr/bin/anaconda", line 1115, in <module> anaconda.intf.run(anaconda) SyntaxError: not well-formed (invalid token): line 1, column 0 Does anyone have any ideas? It crashes half way through the build process with the above errors Thanks Nathan

2 1

make install?
by hadi motamedi 13 Jul '11

13 Jul '11

Dear All I downloaded the octave-3.4.2 and tried to install it on my centos 5.6 as the following: #./configure But it prompted for lack of a c compiler, so I tried to install gcc first and then re-executed it and it was successful. #make But it prompts as "No targets specified and no makefile found". #make install But it prompts as "No rule to make target 'install'". I had the same steps for installing applications when I was on my centos 5.0 machine. Can you please let me know what is wrong my case? Thank you

9 17

missing package in centos 6 - gtk+
by Jerry Geis 13 Jul '11

13 Jul '11

Hi all, Was installing centos 6 and found this: ./CentOS-5.6-x86_64/CentOS/gtk+-1.2.10-56.el5.i386.rpm ./CentOS-5.6-x86_64/CentOS/gtk+-devel-1.2.10-56.el5.i386.rpm ./CentOS-5.6-x86_64/CentOS/gtk+-devel-1.2.10-56.el5.x86_64.rpm ./CentOS-5.6-x86_64/CentOS/gtk+-1.2.10-56.el5.x86_64.rpm ./CentOS-6.0-x86_64/Packages/gtk+extra-2.1.1-13.el6.i686.rpm ./CentOS-6.0-x86_64/Packages/gtk+extra-devel-2.1.1-13.el6.x86_64.rpm ./CentOS-6.0-x86_64/Packages/gtk+extra-2.1.1-13.el6.x86_64.rpm ./CentOS-6.0-x86_64/Packages/gtk+extra-devel-2.1.1-13.el6.i686.rpm Where is gtk+? Its in 5.6 but not in 6.0? jerry

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Re: [CentOS] Anaconda install groups vs yumgroups?
by Tom Diehl 12 Jul '11

12 Jul '11

Switching the list to centos as requested. On Tue, 12 Jul 2011, Marcus Moeller wrote: > Hi. > >> In looking at the C6 installer there are several types of installs listed. >> In the past I could do an install and anaconda would tell me what yumgroups >> it installed via the anaconda.cfg that was dropped in /root. >> >> with c6 anaconda still drops this file but none of the yumgroups are listed. >> >> Is there a way to determine what yumgroups a particular install group installs? >> >> For instance if I do a server install which groups actually get installed? >> >> I am thinking there is something in the anaconda source but so far I am >> unable to find it and Google is not useful. >> >> Is this info listed anywhere? > > This is driven by comps.xml. There is no magic behind. yum grouplist > lists all available and installed groups (sorted) This does not appear to be true. If it was I would not have posted at all or maybe I am just confused. For example, in anaconda there is an install group called "Minimal Desktop" If I look in the comps.xml in the centos repo there is no such group. There is also a Minimal group that does not appear in comps. All I am trying to do is understand the relationship between the groups listed in anaconda and in comps.xml. Does anaconda use a different comps.xml? Regards, -- Tom Diehl tdiehl(a)rogueind.com Spamtrap address mtd123(a)rogueind.com

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Discuss July 2011