CentOS & sudo

CentOS & sudo

http://wiki.centos.org/TipsAndTricks/BecomingRoot

-- su --

su - <user>  --> gives identity of <user> along with <user>'s environment
su <user>    --> gives identity of <user> only

su - root    --> gives identify ot root along with environment
su root      --> gives identity of root only
su -         --> gives identity of root along with environment
su           --> gives identity of root only


-- sudo --

in /etc/sudoers add this line:
user    ALL=(ALL)   ALL

sudo -s      --> open a root shell
sudo -i      --> open a root shell