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fish

The Friendly Interactive SHell. A command-line interpreter designed to be user friendly. More information: https://fishshell.com.

Start interactive shell:

fish

Execute a command:

fish -c "{{command}}"

Run commands from a file:

fish {{file.fish}}

Check a file for syntax errors:

fish --no-execute {{file.fish}}

Display version information and exit:

fish --version

Set and export environmental variables that persist across restarts:

set -Ux {{variable_name}} {{variable_value}}