UNIX Shells by Example (4th Edition)

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chsh ”changes your login shell

chsh [ -s shell ] [ -l ] [ -u ] [ -v ] [ username ]

chsh is used to change your login shell. If a shell is not given on the command line, chsh prompts for one. All valid shells are listed in the /etc/shells file.

-s , --shell

Specifies your login shell.

-l , --list-shells

Prints the list of shells listed in /etc/shells and exits.

-u , --help

Prints a usage message and exits.

-v , --version

Prints version information and exits.

Example A.12.

1 $ chsh -l /bin/bash /bin/sh /bin/ash /bin/bsh /bin/tcsh /bin/csh /bin/ksh /bin/zsh 2 $ chsh Changing shell for ellie. New shell [/bin/sh] tcsh chsh: shell ust be a full pathname.

EXPLANATION

  1. Lists all available shells on this Linux system.

  2. Asks the user to type in the full pathname for a new login shell. Fails unless a full pathname, such as /bin/tcsh , is given.

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