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Explain the issues of setting fish as login shell

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Also stop explaining this in three places. In particular this removes
an FAQ entry.

Fixes #8078
This commit is contained in:
Fabian Homborg
2022-02-18 15:30:23 +01:00
parent d485ed3d87
commit 5af1e64441
4 changed files with 21 additions and 47 deletions
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doc_src/index.rst
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@@ -56,15 +56,30 @@ Once fish has been installed, open a terminal. If fish is not the default shell:
> exit
.. _default-shell:
Default Shell
-------------
To make fish your default shell:
There are multiple ways to switch to fish (or any other shell) as your default.
- Add the line ``/usr/local/bin/fish`` to ``/etc/shells``.
- Change your default shell with ``chsh -s /usr/local/bin/fish``.
The simpler is to set your terminal to start fish. See its configuration and set the program to start to ``/usr/local/bin/fish`` (if that's where fish is installed - substitute another location as appropriate).
For detailed instructions see :ref:`Switching to fish <switching-to-fish>`.
The more involved and complete way is to set fish as your login shell. To do that, you need to:
1. Add the shell to ``/etc/shells`` with::
> echo /usr/local/bin/fish | sudo tee -a /etc/shells
2. Change your default shell with::
> chsh -s /usr/local/bin/fish
Again, substitute the path to fish for /usr/local/bin/fish - see ``command -s fish`` inside fish. To change it back to another shell, just substitute ``/usr/local/bin/fish`` with ``/bin/bash``, ``/bin/tcsh`` or ``/bin/zsh`` as appropriate in the steps above.
.. warning::
Setting fish as your login shell may have issues, because some operating systems (including a bunch of linux distributions) only do some of their configuration in shell startup files like /etc/profile. So you could notice e.g. $PATH being wrong, and you would have to redo that setup.
Uninstalling
------------