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Editor: bonaccos
Comment: clarify that zsh may not be installed everywhere
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#rev 2020-10-22 bonaccos
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Everybody on the system has to use tcsh as login shell, because this allows us to put a standard configuration into each account. But don't worry, it's no problem to change the shell for all further operations after the login. Just put `setenv SHELL /bin/zsh` into your `~/.cshrc` file (if your shell is the tcsh) or in `~/.bashrc` (if your shell is already switched to bash) . Each terminal you start will then invoke `zsh`.
Everybody on the system has to use `bash` as login shell, because this allows us to put a standard configuration into each account. This remains the default shell of a User.

But don't worry, it's no problem to change the shell for all further operations after the login if `zsh` is available on the system.

 1. Create a backup of your `~/.bashrc`, as it will be replaced to start `zsh` and not do anything else {{{#!highlight bash numbers=disable
cp ~/.bashrc ~/.bashrc.bak
}}}
 1. Replace the content of `~/.bashrc` with the following commands: {{{#!highlight bash numbers=disable
if [[ $- == *i* ]]; then
    # This is an interactive shell
    if [[ "${0}" == "-bash" || "${0}" == "bash" ]]; then
        # This is bash and a login or non-login shell
        if [[ -x /bin/zsh ]]; then
            # zsh is present and executable
            export SHELL=/bin/zsh
            exec /bin/zsh
        fi
    fi
fi
}}}
/!\ This only replaces `bash` with `zsh` for interactive shells, make sure you adapt your cronjobs and scripts yourself in case you want to use `zsh` there.

How can I have zsh as my default shell?

Everybody on the system has to use bash as login shell, because this allows us to put a standard configuration into each account. This remains the default shell of a User.

But don't worry, it's no problem to change the shell for all further operations after the login if zsh is available on the system.

  1. Create a backup of your ~/.bashrc, as it will be replaced to start zsh and not do anything else 

    cp ~/.bashrc ~/.bashrc.bak

  2. Replace the content of ~/.bashrc with the following commands: 

    if [[ $- == *i* ]]; then
    # This is an interactive shell
    if [[ "${0}" == "-bash" || "${0}" == "bash" ]]; then
        # This is bash and a login or non-login shell
        if [[ -x /bin/zsh ]]; then
            # zsh is present and executable
            export SHELL=/bin/zsh
            exec /bin/zsh
        fi
    fi
fi

/!\ This only replaces bash with zsh for interactive shells, make sure you adapt your cronjobs and scripts yourself in case you want to use zsh there.

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FAQ/ZshAsDefaultShell (last edited 2023-02-22 11:46:38 by bonaccos)