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}}