Some Useful linux commands for DBA's

I found this linux commands to be very useful for the DBA's from the oracle site...
Hope you people definitely find it to be useful tooo...


http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part1.html
http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part2.html
http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part3.html
http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part4.html
http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part5.html