: My current shell is C shell. How can I change it to tcsh?
First check where tcsh is on the system .
This can be done by the command: whereis tcsh.
Normally the path for tcsh is /usr/local/bin/tcsh.
Now, type at the unix prompt:
chsh
This will prompt u for the new shell; you must specify the full the path.
Then you have to type your passwd in, and the shell will be changed.
Cheers!
Arv