09-30-2010
1) Don't edit /etc/passwd directly unless you really know what you are doing. If you do have to do it in an emergency, use "vipw" and definitely not "vi".
To change a default shell for a user just use the "usermod" command.
2) If you log in with one shell and want to change to another shell which is installed on your computer, just type the path to that shell:
e.g.
/usr/bin/ksh
(i.e. Don't type a # character).
If the shell does not change it can be because some Linux machines link all likely shell names to "bash".
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