Unix Shell Advanced

List of unix shells

• Bourne shell (sh)
• C shell (csh)
• TC shell (tcsh)
• Korn shell (ksh)
• Bourne Again shell (bash)
• Z shell (zsh)

To check current login shell

echo $0
-bash

cat /etc/shells 
/bin/sh
/bin/ash
/bin/bash

# to change shell for `username`
usermod -s /bin/bash <username>

# alternate method with chsh 
chsh -s /bin/bash <username>