Commands¶

This is a list of all the commands fish ships with.

Broadly speaking, these fall into a few categories:

Keywords¶

Core language keywords that make up the syntax, like

Builtins to do a task, like

cd to change the current directory.
echo or printf to produce output.
set_color to colorize output.
set to set, query or erase variables.
read to read input.
string for string manipulation.
path for filtering paths and handling their components.
math does arithmetic.
argparse to make arguments easier to handle.
count to count arguments.
type to find out what sort of thing (command, builtin or function) fish would call, or if it exists at all.
test checks conditions like if a file exists or a string is empty.
contains to see if a list contains an entry.
eval and source to run fish code from a string or file.
status to get shell information, like whether it’s interactive or a login shell, or which file it is currently running.
abbr manages Abbreviations.
bind to change bindings.
complete manages completions.
commandline to get or change the commandline contents.
fish_config to easily change fish’s configuration, like the prompt or colorscheme.
random to generate random numbers or pick from a list.

Known functions are a customization point. You can change them to change how your fish behaves. This includes:

Some helper functions, often to give you information for use in your prompt:

fish_git_prompt and fish_hg_prompt to print information about the current git or mercurial repository.
fish_vcs_prompt to print information for either.
fish_svn_prompt to print information about the current svn repository.
fish_status_to_signal to give a signal name from a return status.
prompt_pwd to give the current directory in a nicely formatted and shortened way.
prompt_login to describe the current login, with user and hostname, and to explain if you are in a chroot or connected via ssh.
prompt_hostname to give the hostname, shortened for use in the prompt.
fish_is_root_user to check if the current user is an administrator user like root.
fish_add_path to easily add a path to $PATH.
alias to quickly define wrapper functions (“aliases”).
fish_delta to show what you have changed from the default configuration.
export as a compatibility function for other shells.

fish also ships some things as external commands so they can be easily called from elsewhere.

This includes fish_indent to format fish code and fish_key_reader to show you what escape sequence a keypress produces.

And here is the full list: