sosreport in CentOS and RHEL >> ‘Generate debugging information for this system

# yum install sos

“sosreport” will generate a compressed a bz2 file under /tmp.

# /usr/sbin/sosreport

sosreport (version 2.2)

This utility will collect some detailed  information about the
hardware and setup of your Red Hat Enterprise Linux system.
The information is collected and an archive is  packaged under
/tmp, which you can send to a support representative.
Red Hat Enterprise Linux will use this information for diagnostic purposes ONLY
and it will be considered confidential information.

This process may take a while to complete.
No changes will be made to your system.

Press ENTER to continue, or CTRL-C to quit.
 

Press Enter

Please enter your first initial and last name [sapp1-rl]: Mr Aqua
 
Please enter the case number that you are generating this report for:dummy


  Running plugins. Please wait ...

  Completed [53/53] ...
Creating compressed archive...

 
Your sosreport has been generated and saved in:
  /tmp/sosreport-MrAqua-20120614230734-28d7.tar.xz

The md5sum is: ffc2e235390412ccade7e4a1e50428d7

Please send this file to your support representative.

You have mail in /var/spool/mail/root
 

It contains linux configuration files/all startup/shutdown scripts, all kind of current system information (dmidecode, lsmod, lspci, netstat, iptables, rpm, network routes