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Fish - Command Line
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Fish

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description Fish Overview

Fish is a command-line interactive shell designed for ease of use. It distinguishes itself through intelligent defaults, automatic syntax highlighting, and helpful autosuggestions that improve productivity. Primarily intended for developers and users new to the command line, Fish streamlines common tasks and reduces errors, offering a more intuitive experience compared to traditional shells like Bash.

insights Ranking position

Fish ranks #5 of 43 in the Command Line ranking, behind ripgrep, ahead of Bash.

balance Fish Pros & Cons

thumb_up Pros
  • check Sensible defaults
  • check Excellent syntax highlighting
  • check Autosuggestions out of the box
  • check User-friendly scripting
thumb_down Cons
  • close Not POSIX compliant
  • close Lacks bash compatibility
  • close Smaller plugin ecosystem

help Fish FAQ

How do I make Fish my default shell in Linux?

To make Fish your default shell, you use the `chsh` command followed by the path to the fish executable, usually `/usr/bin/fish`. First released in 2005, Fish operates as a standalone shell and does not strictly adhere to POSIX standards like Bash.

Does the Fish shell support Bash syntax?

No, Fish (Friendly Interactive Shell) intentionally does not support POSIX-compliant Bash syntax to promote a simpler, cleaner scripting language. This means standard Bash scripts or `.bashrc` aliases must be rewritten or translated into Fish syntax.

How do I configure aliases in Fish shell?

Instead of editing traditional text files like `.bashrc`, Fish users typically create aliases using the `alias` command and save them via the `funcsave` command. Fish manages these functions in its `~/.config/fish/functions/` directory, automatically loading them on startup.

Does Fish shell have built-in autosuggestions?

Yes, Fish is famous for its extensive out-of-the-box user-friendly features, including real-time autosuggestions based on your command history. It also features advanced syntax highlighting that updates as you type to indicate if a command is valid.

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