linux common command backup

 

   # uname -a

   Linux net.pc2 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

 

   # cat /proc/version

   Linux version 2.6.32-279.el6.x86_64 ([email protected]) (gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) ) #1 SMP Fri Jun 22 12:19:21 UTC 2012

 

   # cat /etc/issue

   CentOS release 6.3 (Final)
   Kernel \r on an \m