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0072367512
The case for symlinked directories being duplicated a lot isn't there, but there *is* a usecase for adding the symlink rather than the target, and that's homebrew. E.g. homebrew installs ruby into /usr/local/Cellar/ruby/2.7.1_2/bin, and links to it from /usr/local/opt/ruby/bin. If we add the target, we would miss updates. Having path entries that point to the same location isn't a big problem - it's a path lookup, so it takes a teensy bit longer. The canonicalization is mainly so paths don't end up duplicated via weird spelling and so relative paths can be used.
69 lines
3.3 KiB
ReStructuredText
69 lines
3.3 KiB
ReStructuredText
.. _cmd-fish_add_path:
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fish_add_path - add to the path
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==============================================================
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Synopsis
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--------
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::
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fish_add_path [paths...]
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fish_add_path (-h | --help)
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fish_add_path [(-g | --global) | (-U | --universal) | (-P | --path)] [(-m | --move)] [(-a | --append) | (-p | --prepend)] [(-v | --verbose) | (-n | --dry-run)] [paths...]
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Description
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-----------
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``fish_add_path`` is a simple way to add more components to fish's $PATH. It does this by adding the components either to $fish_user_paths or directly to $PATH (if the ``--path`` switch is given).
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It is (by default) safe to use ``fish_add_path`` in config.fish, or it can be used once, interactively, and the paths will stay in future because of :ref:`universal variables <variables-universal>`. This is a "do what I mean" style command, if you need more control, consider modifying the variable yourself.
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Components are normalized by :ref:`realpath <cmd-realpath>`. This means that trailing slashes are ignored and relative paths are made absolute (but symlinks are not resolved). If a component already exists, it is not added again and stays in the same place unless the ``--move`` switch is given.
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Components are added in the order they are given, and they are prepended to the path unless ``--append`` is given (if $fish_user_paths is used, that means they are last in $fish_user_paths, which is itself prepended to $PATH, so they still stay ahead of the system paths).
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If no component is new, the variable ($fish_user_paths or $PATH) is not set again or otherwise modified, so variable handlers are not triggered.
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If a component is not an existing directory, ``fish_add_path`` ignores it.
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Options
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-------
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- ``-a`` or ``--append`` causes the components to be added to the *end* of the variable
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- ``-p`` or ``--prepend`` causes the components to be added to the *front* of the variable (this is the default)
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- ``-g`` or ``--global`` means to use a global $fish_user_paths
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- ``-U`` or ``--universal`` means to use a universal $fish_user_paths - this is the default if it doesn't already exist
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- ``-P`` or ``--path`` means to use $PATH directly
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- ``-m`` or ``--move`` means to move already existing components to the place they would be added - by default they would be left in place and not added again
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- ``-v`` or ``--verbose`` means to print the :ref:`set <cmd-set>` command used
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- ``-n`` or ``--dry-run`` means to print the ``set`` command that would be used without executing it
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If ``--move`` is used, it may of course lead to the path swapping order, so you should be careful doing that in config.fish.
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Example
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-------
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::
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# I just installed mycoolthing and need to add it to the path to use it.
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fish_add_path /opt/mycoolthing/bin
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# I want my ~/.local/bin to be checked first.
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fish_add_path -m ~/.local/bin
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# I prefer using a global fish_user_paths
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fish_add_path -g ~/.local/bin ~/.otherbin /usr/local/sbin
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# I want to append to the entire $PATH because this directory contains fallbacks
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fish_add_path -aP /opt/fallback/bin
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# I want to add the bin/ directory of my current $PWD (say /home/nemo/)
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> fish_add_path -v bin/
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set fish_user_paths /home/nemo/bin /usr/bin /home/nemo/.local/bin
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# I have installed ruby via homebrew
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fish_add_path /usr/local/opt/ruby/bin
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