CHSH(1) — UNIX Programmer’s Manual
NAME
chsh − change default login shell
SYNOPSIS
chsh name [ shell ]
DESCRIPTION
Chsh is a command similar to passwd(1) except that it is used to change the login shell field of the password file rather than the password entry. If no shell is specified then the shell reverts to the default login shell /bin/sh.
An example use of this command would be
chsh bill /bin/csh
SEE ALSO
4BSD