Sysadmin's Guide

 http://www.ibm.com/developerworks/linux/library/l-10sysadtips/?S_TACT=105AGX54&S_CMP=C0115&ca=dnw-1002&open&cm_mmc=4633-_-n-_-vrm_newsletter-_-10731_101108&cmibm_em=dm:0:6992641

 http://linuxhelp.blogspot.com/2008/03/two-repositories-of-linux-and-unix.html


 http://linuxhelp.blogspot.com/2009/01/linux-commands-10-useful-tricks-for.html