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}}`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00			`# fish`

bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714) 2021-04-14 15:07:21 +01:00			`> The Friendly Interactive SHell, a command-line interpreter designed to be user friendly.`
fish: add link to homepage 2019-06-07 11:58:13 +01:00			`> More information: <https://fishshell.com>.`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714) 2021-04-14 15:07:21 +01:00			`- Start an interactive shell session:`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
			`fish`

fish: update page (#7415) * fish tldr clean-up: - short options preferred over long ones - page made more consistent with elvish page (check my PR) - commands reordered: interactive commands, non-interactive commands - set command example removed because it is example of Fish language but not of fish command * Update md to be consistent with #7416 issue: * Simplify version print command description * Use long options * --no-execute change: it is assumed that script is not executed by default after syntax check * Return set -Ux example * set builtin description fix 2021-11-25 20:46:27 +00:00			`- Start an interactive shell session without loading startup configs:`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
fish: update page (#7415) * fish tldr clean-up: - short options preferred over long ones - page made more consistent with elvish page (check my PR) - commands reordered: interactive commands, non-interactive commands - set command example removed because it is example of Fish language but not of fish command * Update md to be consistent with #7416 issue: * Simplify version print command description * Use long options * --no-execute change: it is assumed that script is not executed by default after syntax check * Return set -Ux example * set builtin description fix 2021-11-25 20:46:27 +00:00			`fish --no-config`

fish: refresh page (#7987) * Refresh a page: - better grammar - better token syntax * Add reading commands from stdin sample 2022-06-08 09:09:31 +01:00			`- Execute specific commands:`
fish: update page (#7415) * fish tldr clean-up: - short options preferred over long ones - page made more consistent with elvish page (check my PR) - commands reordered: interactive commands, non-interactive commands - set command example removed because it is example of Fish language but not of fish command * Update md to be consistent with #7416 issue: * Simplify version print command description * Use long options * --no-execute change: it is assumed that script is not executed by default after syntax check * Return set -Ux example * set builtin description fix 2021-11-25 20:46:27 +00:00
fish: refresh page (#7987) * Refresh a page: - better grammar - better token syntax * Add reading commands from stdin sample 2022-06-08 09:09:31 +01:00			`fish --command "{{echo 'fish is executed'}}"`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
fish: refresh page (#7987) * Refresh a page: - better grammar - better token syntax * Add reading commands from stdin sample 2022-06-08 09:09:31 +01:00			`- Execute a specific script:`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714) 2021-04-14 15:07:21 +01:00			`fish {{path/to/script.fish}}`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
fish: refresh page (#7987) * Refresh a page: - better grammar - better token syntax * Add reading commands from stdin sample 2022-06-08 09:09:31 +01:00			`- Check a specific script for syntax errors:`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714) 2021-04-14 15:07:21 +01:00			`fish --no-execute {{path/to/script.fish}}`

*: always backquote `stdin`, `stdout` and `stderr` (#9584) 2022-12-04 07:53:34 +00:00			- Execute specific commands from `stdin`:
fish: refresh page (#7987) * Refresh a page: - better grammar - better token syntax * Add reading commands from stdin sample 2022-06-08 09:09:31 +01:00
			`{{echo "echo 'fish is executed'"}} \| fish`

bash, dash, fish, ksh, rbash, sh, zsh: refresh (#5714) 2021-04-14 15:07:21 +01:00			`- Start an interactive shell session in private mode, where the shell does not access old history or save new history:`

			`fish --private`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
fish: update page (#7415) * fish tldr clean-up: - short options preferred over long ones - page made more consistent with elvish page (check my PR) - commands reordered: interactive commands, non-interactive commands - set command example removed because it is example of Fish language but not of fish command * Update md to be consistent with #7416 issue: * Simplify version print command description * Use long options * --no-execute change: it is assumed that script is not executed by default after syntax check * Return set -Ux example * set builtin description fix 2021-11-25 20:46:27 +00:00			`- Define and export an environmental variable that persists across shell restarts (builtin):`
fish: add page Added the fish shell. Information included was based on other shells, notably bash. 2018-01-02 18:00:12 +00:00
fish: update page (#7415) * fish tldr clean-up: - short options preferred over long ones - page made more consistent with elvish page (check my PR) - commands reordered: interactive commands, non-interactive commands - set command example removed because it is example of Fish language but not of fish command * Update md to be consistent with #7416 issue: * Simplify version print command description * Use long options * --no-execute change: it is assumed that script is not executed by default after syntax check * Return set -Ux example * set builtin description fix 2021-11-25 20:46:27 +00:00			`set --universal --export {{variable_name}} {{variable_value}}`