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The Friendly Interactive SHell, a command-line interpreter designed to be user friendly. More information:

  • Start an interactive shell session:


  • Start an interactive shell session without loading startup configs:

fish --no-config

  • Execute specific commands:

fish --command "{{echo 'fish is executed'}}"

  • Execute a specific script:

fish {{path/to/}}

  • Check a specific script for syntax errors:

fish --no-execute {{path/to/}}

  • Execute specific commands from stdin:

{{echo "echo 'fish is executed'"}} | fish

  • Start an interactive shell session in private mode, where the shell does not access old history or save new history:

fish --private

  • Define and export an environmental variable that persists across shell restarts (builtin):

set --universal --export {{variable_name}} {{variable_value}}