Shells,
- grep, sed, and awk for fun and profit
- Changing the shell for existing users and new users
- Changing your tcsh prompt
- Installing OpenSSH – less restrictive than ssh
- periodic – using it to run shell scripts
- ssh2 – when ssh won’t do
- ssh – much more secure than telnet
- nologin – Refuse a login to a user, and make a note of it in syslog
- screen – how to detach a session from your window
- Changing your bash prompt
- su – how to become a super user. avoid using root
- Changing the shell (bash)