tldr/pages/common/fish.md

fish

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

• Start an interactive shell session:

fish

• 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/script.fish}}

• Check a specific script for syntax errors:

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

• 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}}