A lightweight fish plugin to import environment variables modified by given bash command/script, implemented purely in bash (__bash2env.sh) and fish.

• fish
• bash
• coreutils (env -0, tr)

(Install the plugin first to use the bash2env function)

bash2env [-i/--impure] <bash command>

• -i, --impure: By default bash2env imports only changed environment variables, --impure flag disables this behavior.

$ bash2env source /etc/profile
$ bash2env export x=123
$ echo $x
123
$ # bash2env is just a wrapper that sources outputs of __bash2env.sh
$ bash /path/to/__bash2env.sh  export x=123
set -gx x '123'

$ chsh -l | grep fish

$ chsh -s /bin/fish

# ~/.config/fish/config.fish or /etc/fish/config.fish
if status is-login
    bash2env source /etc/profile
end

# ...

$ make FISH_FUNCTION_DIR=~/.config/fish/functions install
$ # or install globally
$ sudo make install
$ sudo make uninstall

$ fisher install EHfive/fish-bash2env
$ fisher remove EHfive/fish-bash2env

$ set -l function_path /path/to/fish-bash2env/functions
$ set fish_function_path $fish_function_path $function_path

Time by sourcing /etc/profile on my personal Arch Linux desktop setup.