Discuss March 2008

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show all groups comand
by Hiep Nguyen 05 Mar '08

05 Mar '08

hi all, how do i find out all users & groups existing on the system from command line? thanks, t. hiep

3 2

Source keychain credentials in Perl?
by Sean Carolan 05 Mar '08

05 Mar '08

Keychain is quite a useful tool for automating SSH logins without having to use password-less keys: http://www.gentoo.org/proj/en/keychain/ Normally it is used like this to set the SSH_AUTH_SOC and SSH_AGENT_PID variables: source ~/.keychain/hostname-sh (This is what's in hostname-sh) SSH_AUTH_SOCK=/tmp/ssh-XXn47DUn/agent.16721; export SSH_AUTH_SOCK; SSH_AGENT_PID=16722; export SSH_AGENT_PID; I would like these environment variables to be made available to a Perl script so that any "system" commands contained in the perl script will inherit them. How do you do this in Perl?

3 8

RESTORING THUNDERBIRD FILES
by Chris Geldenhuis 05 Mar '08

05 Mar '08

Hi All, Last night I downloaded the latest security updates to my Centos 4 system, and rebooted afterwards. This morning I wanted to check my mail, but when I opened Thunderbird, it asked me to set up a mail account. I saved the contents of the previous .thunderbird file structure with tar and created a new mail account with the same details (name, isp, pasword, servers etc.) as the previous account. All of my folders and history had disappeared when the "new" account was created. I tried restoring from the tar archive but can still only access mails downloaded after recreating the account. Any ideas on how to regain access to my mail archives? TIA ChrisG

2 6

permission on /var/www & /var/www/html
by Hiep Nguyen 05 Mar '08

05 Mar '08

hi all, assume apache runs under apache user/group and i have a user/group name "weber". i use "weber" user to upload files via ftp/sftp. where should i place my include files so that no one can access except apache b/c these files contained user/pw for mysql. i usually place them in /var/www/html/includes, but people can access to this folder, so i'm thinking place them in /var/www/includes. what should the permission for /var/www/html and /var/www/inclues/? what group should these two directories belong to??? thanks, t. hiep

2 1

environment variables in kickstart
by Jerry Geis 05 Mar '08

05 Mar '08

I have been looking for environment variables for the %post section of kickstart. Namely if I start my kickstart command with "linux ks=http://serverip/ks.cfg" is there an environment variable that has serverip that I can use in the %post section? Also is there a way to pass a command line argument to the %post section when running kickstart command as the above http://serverip/ks.cfg Thanks, Jerry

2 1

Re: [CentOS] /var/www/html group & owner (fwd)
by Hiep Nguyen 05 Mar '08

05 Mar '08

On Tue, 4 Mar 2008, lists-centos wrote: > for apache to be able to serve the files under the document root it > needs (and should only have) read access to the files (and > read/execute for the directories). the directories/files under the > document root should **not** be owned (or writeable) by the > user/group that the web server is running as. if they are, you have a > security hole should someone break through the webserver (or more > likely poorly written scripts). > > so, a good approach is to have the directories/files under > owner/group other than apache (assuming your web server is running as > the apache user), with read-only access given to "world". assume that i have a user and group named "weber". i'll use "weber" to upload (via ftp) directories/files to /var/www/html/ what should /var/www/html/ look like? also, i have some php include files that i don't want anyone access except apache b/c they contain user/pw to mysql. where should i place them? i usually place them in /var/www/html/includes/ someone suggested i place them in /var/www/include/, but my question is what user/group /var/www/include/ belong to? thanks t. hiep > > > - Rick > > ------------ Original Message ------------ >> Date: Tuesday, March 04, 2008 12:18:56 PM -0800 >> From: Hiep Nguyen <hiep(a)ee.ucr.edu> >> To: centos(a)centos.org >> Cc: >> Subject: [CentOS] /var/www/html group & owner >> >> hi again, >> >> [root@dev ~]# ls -all /var/www/ >> total 64 >> drwxr-xr-x 8 root root 4096 Mar 3 11:44 . >> drwxr-xr-x 21 root root 4096 Mar 3 11:44 .. >> drwxr-xr-x 2 root root 4096 Jan 15 20:36 cgi-bin >> drwxr-xr-x 3 root root 4096 Mar 3 11:43 error >> drwxr-xr-x 2 root root 4096 Jan 15 20:36 html >> drwxr-xr-x 3 root root 4096 Mar 3 11:44 icons >> drwxr-xr-x 14 root root 4096 Mar 3 11:44 manual >> drwxr-xr-x 2 webalizer root 4096 Mar 3 11:44 usage >> >> currently, html is belonging to root group/owner and httpd is >> running under apache user/group. >> >> what should i change html to, so that httpd can run safely under >> apache user/group??? >> >> or should i change httpd to run under a different user/group??? >> >> if i keep httpd running on apache user/group, should i change html >> to apache group/owner??? >> >> thank you for all your help. >> t. hiep >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS(a)centos.org >> http://lists.centos.org/mailman/listinfo/centos > > ---------- End Original Message ---------- > >

1 0

Error reading block x (Attempt to read block...)
by Scott R. Ehrlich 05 Mar '08

05 Mar '08

A Centos 5 64-bit server reflected some SCSI kernel errors in the logs, so I opted to reboot, only to be prompted to perform a manual fsck, that an automatic fsck wouldn't be permitted. As a result, the fsck is taking a long time, as I have to babysit the server for every bad block that is reported and needs a forced rewrite. The exact error is "Error reading block x (Attempt to read block from filesystem resulted in short read) while doing inode scan. Ignore error(y)? Force rewrite(y)?" I say yes to both. Could I safely get away with booting from a CentOS 5 CD and performing a fsck with automatic system fixing to speed up the process, or do I need to be patient and just keep manually selecting Y for as long as it takes? Thanks. Scott

2 1

Module i2c-piix4 for lm_sensors on CentOS 5 64 Bit
by Sebastian Marten 05 Mar '08

05 Mar '08

Hi list, Where can i find the i2c-piix4 module for CentOs 5 64 Bit? If i say modprobe i2c-piix4 i get the error: FATAL: Module i2c_piix4 not found. Can you help me? Greetings Sebastian

1 0

LVM: how do I change the UUID of a LV?
by Timothy Selivanow 05 Mar '08

05 Mar '08

I know how to change the UUID of Physical Volumes and Volume Groups, but when I try to do the same for a Logical Volume, lvchange complains that "--uuid" is not an option. Here is how I've been changing the others (note that "--uuid" does not appear in the man pages for pvchange and vgchange for lvm2-2.02.26-3.el5): pvchange --uuid {pv dev} vgchange --uuid {vg name} Any suggestions? I'm pretty much open to any arcane/convoluted procedure, but I refrain from copying the data to a temp place so I can re-create the LV as that would add too much work and would kinda defeat what I'm doing. Thanks! --Tim _________________________________________________________ / Obviously I was either onto something, or on something. \ \ -- Larry Wall on the creation of Perl / --------------------------------------------------------- \ \ \ \ /\ ( ) .( o ).

2 1

Overwrite target of ln
by Matt Arnilo S. Baluyos (Mailing Lists) 05 Mar '08

05 Mar '08

Hi all, Sorry if this seems too basic. But is there a way to overwrite the target of a symbolic link without first deleting the symlink itself? For example, if I have this: public_html -> releases/b2b-20080228 ... and there's a new update, I can then just do the following: $ ln releases/site-latest public_html I tried using the -f option but it doesn't seem to work as expected. -- Stand before it and there is no beginning. Follow it and there is no end. Stay with the ancient Tao, Move with the present.

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Discuss March 2008