fish - the friendly interactive shell
fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. fish includes features like syntax highlighting, autosuggest-as-you-type, and fancy tab completions that just work, with no configuration required.
For more on fish's design philosophy, see the design document.
fish generally works like other shells, like bash or zsh. A few important differences can be found at https://fishshell.com/docs/current/tutorial.html by searching for the magic phrase "unlike other shells".
Detailed user documentation is available by running
help within fish, and also at https://fishshell.com/docs/current/index.html
fish can be installed:
- using Homebrew:
brew install fish
- using MacPorts:
sudo port install fish
- using the installer from fishshell.com
- as a standalone app from fishshell.com
Packages for Linux
Packages for Debian, Fedora, openSUSE, and Red Hat Enterprise Linux/CentOS are available from the openSUSE Build Service.
Packages for Ubuntu are available from the fish PPA, and can be installed using the following commands:
sudo apt-add-repository ppa:fish-shell/release-2 sudo apt-get update sudo apt-get install fish
Instructions for other distributions may be found at fishshell.com.
fish can be installed using Cygwin Setup (under the Shells category).
fish can be installed into Windows Subsystem for Linux using the instructions under Packages for Linux for the appropriate image (eg Ubuntu).
Building from source
See the Building section for instructions.
Once installed, run
fish from your current shell to try fish out!
Running fish requires:
- a curses implementation such as ncurses (libraries and the
- PCRE2 library - a copy is included with fish
- MuParser library - a copy is included with fish
- gettext (library and
gettextcommand), if compiled with translation support
- basic system utilities including
- a number of common UNIX utilities:
The following optional features also have specific requirements:
- builtin commands that have the
--helpoption or print usage messages require
ul(manual page formatters) to do so
- completion generation from manual pages requires Python 2.7, 3.3 or greater, and possibly the
backports.lzmamodule for Python 2.7
fish_configWeb configuration tool requires Python 2.7, 3.3 or greater, and a web browser
- system clipboard integration (with the default Ctrl-V and Ctrl-X bindings) require either the
- prompts which support showing VCS information (Git, Mercurial or Subversion) require these utilities
Switching to fish
If you wish to use fish as your default shell, use the following command:
chsh -s /usr/local/bin/fish
chsh will prompt you for your password, and change your default shell. Substitute
/usr/local/bin/fish with whatever path to fish is in your
Use the following command if you didn't already add your fish path to
echo /usr/local/bin/fish | sudo tee -a /etc/shells
To switch your default shell back, you can run:
chsh -s /bin/bash
/bin/zsh as appropriate.
You may need to logout/login for the change (chsh) to take effect.
Compiling fish requires:
- a C++11 compiler (g++ 4.8 or later, or clang 3.3 or later)
- CMake, or GNU Make (all platforms), or Xcode (macOS only)
- a curses implementation such as ncurses (headers and libraries)
- PCRE2 (headers and libraries) - a copy is included with fish
- MuParser (headers and libraries) - a copy is included with fish
- gettext (headers and libraries) - optional, for translation support
Compiling from git (that is, not a released tarball) also requires:
- either Xcode (macOS only) or the following Autotools utilities (all platforms):
- autoconf 2.60 or later
- automake 1.13 or later
- Doxygen (1.8.7 or later) - optional, for documentation
Building from source
mkdir build; cd build cmake .. # add -DCMAKE_BUILD_TYPE=Release for release build make install
autoreconf --no-recursive #if building from Git ./configure make sudo make install
Xcode Development Build
- Build the
basetarget in Xcode
- Run the fish executable, for example, in
Xcode Build and Install
xcodebuild install sudo ditto /tmp/fish.dst / sudo make install-doc
Help, it didn't build!
If fish reports that it could not find curses, try installing a curses development package and build again.
On Debian or Ubuntu you want:
sudo apt-get install build-essential ncurses-dev libncurses5-dev gettext autoconf
On RedHat, CentOS, or Amazon EC2:
sudo yum install ncurses-devel
Contributing Changes to the Code
See the Guide for Developers.
Questions, comments, rants and raves can be posted to the official fish mailing list at https://lists.sourceforge.net/lists/listinfo/fish-users or join us on our gitter.im channel or IRC channel #fish at irc.oftc.net. Or use the fish tag on Stackoverflow for questions related to fish script and the fish tag on Superuser for all other questions (e.g., customizing colors, changing key bindings).
Found a bug? Have an awesome idea? Please open an issue on this github page.