How to define an alias in fish shell?

Question

I would like to define some aliases in fish. Apparently it should be possible to define them in

~/.config/fish/functions

but they don\'t g

Answer 1

To properly load functions from ~/.config/fish/functions

You may set only ONE function inside file and name file the same as function name + add .fish extension.

This way changing file contents reload functions in opened terminals (note some delay may occur ~1-5s)

That way if you edit either by commandline

function name; function_content; end

then

funcsave name

you have user defined functions in console and custom made in the same order.

Answer 2

For posterity, fish aliases are just functions:

$ alias foo="echo bar"
$ type foo
foo is a function with definition
function foo
    echo bar $argv; 
end

To remove it

$ unalias foo
/usr/bin/unalias: line 2: unalias: foo: not found
$ functions -e foo
$ type foo
type: Could not find “foo”

Answer 3

This is how I define a new function foo, run it, and save it persistently.

sthorne@pearl~> function foo
                    echo 'foo was here'
                end
sthorne@pearl~> foo
foo was here
sthorne@pearl~> funcsave foo

Answer 4

Save your files as ~/.config/fish/functions/{some_function_name}.fish and they should get autoloaded when you start fish.