fish Shell is Really a Friendly Interactive Shell Which Be Used on GNU/Linux, OS X or UNIX Systems. fish is a user-friendly and Exotic Shell. Previously we have talked about UNIX Shell, Terminal and Terminal Emulators for providing the basic idea. On OS X, we usually use oh-my-zsh with iTerm2 and Homebrew as package manager. That oh-my-zsh can be replaced with fish Shell or at least can be tested for usability.
fish Shell : Basics
Exotic as the syntax are not from Bourne shell or C shell and certain features are enabled by default. Navigate to fishshell dot com on your browser to check the features of this Shell. It is possible to use fish on Windows with Cygwin. For general purpose, we are describing the basic usage of fish shell with OS X fish shell App, it is portable, no installation is needed. This will install fish on OS X (be careful, its not the portable one) :
brew install fish && echo "/usr/local/bin/fish" | sudo tee -a /etc/shells
For Debian 8.0, we will install in this way :
apt-key add - < Release.key
echo 'deb http://download.opensuse.org/repositories/shells:/fish:/release:/2/Debian_8.0/ /' >> /etc/apt/sources.list.d/fish.list
apt-get install fish
If you change
Debian_7.0 for Deb 7.0.
fish Shell : OS X Basic Usage For Testing
If you have downloaded that App for OS X on Desktop and your username is
abhishekghosh, then if you run :
on iTerm2, instead of oh-my-zsh, you will be using fish shell portable version. It will give you the information to type
help as command and hit the return key. It will open the webpage on default browser instead of normal command line options. It is optimized for GUI. Now, if you type :
You’ll see that you are getting automatic suggestions or incremental search. If you run
ls -al command, you’ll feel that it is very fast. It is POSIX compliant shell, so normal usage like :
set abhishek abhishek-ghosh
abhishek-ghosh as return. fish has good syntax highlighting with error checking feature. Other things are written in the official website. We provided the basic idea.