Fish

Install

Install fish via homebrew

brew install fish

Set fish as default shell

echo /usr/local/bin/fish | sudo tee -a /etc/shells
sudo chsh -s $(which fish) $(whoami)

Default fish config folder location

~/.config/fish

Completions

Update man page completions

fish_update_completions

Functions

List available fish functions

functions

Show source for specific function (type provides syntax highlighting)

functions <function-name>

List Builtin function names

builtin --names

Environment

Set environment variable for command

env <variable>=<value> <command>

Abbreviations

Add (-a) global (-g) abbreviation

abbr -ag gc 'git ci -m'

Add (-a) global (-g) abbreviation and set cursor position

abbr -ag gc --set-cursor=@ 'git ci -m "@"'

List full abbreviations or abbreviation names

abbr
abbr --list

Remove abbreviation

abbr -e <abbr>

Rename abbreviation

abbr -r <old-abbr> <new-abbr>

Command History

Show all command history items

history

Clear all command history items

history clear

Limit history results (show count most recent entries, eg. -5 five entries)

history -<count>
history -5

Include timestamp of command in history output

--show-time -t

Show history matching filter and string criteria (optionally limit to -n results)

history search <filter> <string>
history search <filter> <string> -n <count>

Delete history matching filter and string criteria

history delete <filter> <string>

History result filters

--exact -e
--prefix -p
--contains -c

Set filter string to be case sensitive

--case-sensitive -C

List history entries that contain the specified string

history search --contains <string>

Delete history entries that contain the specified string

history delete --contains <string>

Search command history from string using grep

history | grep -i <string>

Private Mode

Use private mode for running commands with tokens or other context that should not be persisted to history

fish --private
fish -P

String Functions

Search and replace string content (-r for regex)

string replace -r <search> <replace> <input>