Links

1. http://calomel.org  http://calomel.org/

2. http://wiki.centos.org/ http://wiki.centos.org

3.http://wiki.centos.org/HowTos  http://wiki.centos.org/HowTos

4.http://kiranjith83.blogspot.com/  http://kiranjith83.blogspot.com

5.http://www.minihowto.ro/  http://www.minihowto.ro

6.http://www.cyberciti.biz/ http://www.cyberciti.biz

7.  Linux Shell Scripting Tutorial (LSST) v2.0 http://bash.cyberciti.biz/guide/Main_Page 
                         LSST PDF