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https://github.com/clvv/fasd

Command-line productivity booster, offers quick access to files and directories, inspired by autojump, z and v.
https://github.com/clvv/fasd

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Command-line productivity booster, offers quick access to files and directories, inspired by autojump, z and v.

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# Fasd



Fasd (pronounced similar to "fast") is a command-line productivity booster.

Fasd offers quick access to files and directories for POSIX shells. It is

inspired by tools like [autojump](https://github.com/joelthelion/autojump),

[z](http://github.com/rupa/z) and [v](https://github.com/rupa/v). Fasd keeps

track of files and directories you have accessed, so that you can quickly

reference them in the command line.



The name fasd comes from the default suggested aliases `f`(files),

`a`(files/directories), `s`(show/search/select), `d`(directories).



Fasd ranks files and directories by "frecency," that is, by both "frequency" and

"recency." The term "frecency" was first coined by Mozilla and used in Firefox

([link](https://developer.mozilla.org/en/The_Places_frecency_algorithm)).



# Introduction



If you use your shell to navigate and launch applications, fasd can help you do

it more efficiently. With fasd, you can open files regardless of which

directory you are in. Just with a few key strings, fasd can find a "frecent"

file or directory and open it with command you specify. Below are some

hypothetical situations, where you can type in the command on the left and fasd

will "expand" your command into the right side. Pretty magic, huh?



```

  v def conf       =>     vim /some/awkward/path/to/type/default.conf

  j abc            =>     cd /hell/of/a/awkward/path/to/get/to/abcdef

  m movie          =>     mplayer /whatever/whatever/whatever/awesome_movie.mp4

  o eng paper      =>     xdg-open /you/dont/remember/where/english_paper.pdf

  vim `f rc lo`    =>     vim /etc/rc.local

  vim `f rc conf`  =>     vim /etc/rc.conf

```



Fasd comes with some useful aliases by default:



```sh

alias a='fasd -a'        # any

alias s='fasd -si'       # show / search / select

alias d='fasd -d'        # directory

alias f='fasd -f'        # file

alias sd='fasd -sid'     # interactive directory selection

alias sf='fasd -sif'     # interactive file selection

alias z='fasd_cd -d'     # cd, same functionality as j in autojump

alias zz='fasd_cd -d -i' # cd with interactive selection

```



Fasd will smartly detect when to display a list of files or just the best

match. For instance, when you call fasd in a subshell with some search

parameters, fasd will only return the best match. This enables you to do:



```sh

mv update.html `d www`

cp `f mov` .

```



# Install



Fasd is available in various package managers. Please check

[the wiki page](https://github.com/clvv/fasd/wiki/Installing-via-Package-Managers)

for an up-to-date list.



You can also manually obtain a copy of fasd.



Download fasd 1.0.1 from GitHub:

[zip](https://github.com/clvv/fasd/zipball/1.0.1),

[tar.gz](https://github.com/clvv/fasd/tarball/1.0.1).



Fasd is a self-contained POSIX shell script that can be either sourced or

executed. A Makefile is provided to install `fasd` and `fasd.1` to desired

places.



System-wide install:



    make install



Install to $HOME:



    PREFIX=$HOME make install



Or alternatively you can just copy `fasd` to anywhere you like (preferably

under some directory in `$PATH`).



To get fasd working in a shell, some initialization code must be run. Put the

line below in your shell rc.



```sh

eval "$(fasd --init auto)"

```



This will setup a command hook that executes on every command and advanced tab

completion for zsh and bash.



If you want more control over what gets into your shell environment, you can

pass customized set of arguments to `fasd --init`.



```

zsh-hook             # define _fasd_preexec and add it to zsh preexec array

zsh-ccomp            # zsh command mode completion definitions

zsh-ccomp-install    # setup command mode completion for zsh

zsh-wcomp            # zsh word mode completion definitions

zsh-wcomp-install    # setup word mode completion for zsh

bash-hook            # add hook code to bash $PROMPT_COMMAND

bash-ccomp           # bash command mode completion definitions

bash-ccomp-install   # setup command mode completion for bash

posix-alias          # define aliases that applies to all posix shells

posix-hook           # setup $PS1 hook for shells that's posix compatible

tcsh-alias           # define aliases for tcsh

tcsh-hook            # setup tcsh precmd alias

```



Example for a minimal zsh setup (no tab completion):



```sh

eval "$(fasd --init posix-alias zsh-hook)"

```



Note that this method will slightly increase your shell start-up time, since

calling binaries has overhead. You can cache fasd init code if you want minimal

overhead. Example code for bash (to be put into .bashrc):



```sh

fasd_cache="$HOME/.fasd-init-bash"

if [ "$(command -v fasd)" -nt "$fasd_cache" -o ! -s "$fasd_cache" ]; then

  fasd --init posix-alias bash-hook bash-ccomp bash-ccomp-install >| "$fasd_cache"

fi

source "$fasd_cache"

unset fasd_cache

```



Optionally, if you can also source `fasd` if you want `fasd` to be a shell

function instead of an executable.



You can tweak initialization code. For instance, if you want to use "c"

instead of "z" to do directory jumping, you can use the alias below:



```sh

alias c='fasd_cd -d'

# `-d` option present for bash completion

# function fasd_cd is defined in posix-alias

```



After you first installed fasd, open some files (with any program) or `cd`

around in your shell. Then try some examples below.



# Examples



```sh

f foo           # list frecent files matching foo

a foo bar       # list frecent files and directories matching foo and bar

f js$           # list frecent files that ends in js

f -e vim foo    # run vim on the most frecent file matching foo

mplayer `f bar` # run mplayer on the most frecent file matching bar

z foo           # cd into the most frecent directory matching foo

open `sf pdf`   # interactively select a file matching pdf and launch `open`

```



You should add your own aliases to fully utilize the power of fasd. Here are

some examples to get you started:



```sh

alias v='f -e vim' # quick opening files with vim

alias m='f -e mplayer' # quick opening files with mplayer

alias o='a -e xdg-open' # quick opening files with xdg-open

```



If you're using bash, you have to call `_fasd_bash_hook_cmd_complete` to make

completion work. For instance:



    _fasd_bash_hook_cmd_complete v m j o



You could select an entry in the list of matching files.



# Matching



Fasd has three matching modes: default, case-insensitive, and fuzzy.



For a given set of queries (the set of command-line arguments passed to fasd),

a path is a match if and only if:



1. Queries match the path *in order*.

2. The last query matches the *last segment* of the path.



If no match is found, fasd will try the same process ignoring case. If still no

match is found, fasd will allow extra characters to be placed between query

characters for fuzzy matching.



Tips:



* If you want your last query not to match the last segment of the path, append

  `/` as the last query.

* If you want your last query to match the end of the filename, append `$` to

  the last query.



# How It Works



When you run fasd init code or source `fasd`, fasd adds a hook which will be

executed whenever you execute a command. The hook will scan your commands'

arguments and determine if any of them refer to existing files or directories.

If yes, fasd will add them to the database.



# Compatibility



Fasd's basic functionalities are POSIX compliant, meaning that you should be

able to use fasd in all POSIX compliant shells. Your shell need to support

command substitution in `$PS1` in order for fasd to automatically track your

commands and files. This feature is not specified by the POSIX standard, but

it's nonetheless present in many POSIX compliant shells. In shells without

prompt command or prompt command substitution (csh for instance), you can add

entries manually with `fasd -A`. You are very welcomed to contribute shell

initialization code for not yet supported shells.



Fasd has been tested on the following shells: bash, zsh, mksh, pdksh, dash,

busybox ash, FreeBSD 9 /bin/sh and OpenBSD /bin/sh.



# Synopsis



    fasd [options] [query ...]

    [f|a|s|d|z] [options] [query ...]

      options:

        -s         list paths with scores

        -l         list paths without scores

        -i         interactive mode

        -e    set command to execute on the result file

        -b   only use  backend

        -B   add additional backend 

        -a         match files and directories

        -d         match directories only

        -f         match files only

        -r         match by rank only

        -t         match by recent access only

        -R         reverse listing order

        -h         show a brief help message

        -[0-9]     select the nth entry



    fasd [-A|-D] [paths ...]

        -A    add paths

        -D    delete paths



# Tab Completion



Fasd offers two completion modes, command mode completion and word mode

completion. Command mode completion works in bash and zsh. Word mode

completion only works in zsh.



Command mode completion is just like completion for any other commands. It is

triggered when you hit tab on a `fasd` command or its aliases. Under this mode

your queries can be separated by a space. Tip: if you find that the completion

result overwrites your queries, type an extra space before you hit tab.



Word mode completion can be triggered on *any* command. Word completion is

triggered by any command line argument that starts with `,` (all), `f,`

(files), or `d,` (directories), or that ends with `,,` (all), `,,f` (files), or

`,,d` (directories). Examples:



    $ vim ,rc,lo

    $ vim /etc/rc.local



    $ mv index.html d,www

    $ mv index.html /var/www/



There are also three zle widgets: `fasd-complete`, `fasd-complete-f`,

`fasd-complete-d`. You can bind them to keybindings you like:



```sh

bindkey '^X^A' fasd-complete    # C-x C-a to do fasd-complete (files and directories)

bindkey '^X^F' fasd-complete-f  # C-x C-f to do fasd-complete-f (only files)

bindkey '^X^D' fasd-complete-d  # C-x C-d to do fasd-complete-d (only directories)

```



# Backends



Fasd can take advantage of different sources of recent / frequent files. Most

desktop environments (such as OS X and Gtk) and some editors (such as Vim) keep

a list of accessed files. Fasd can use them as additional backends if the data

can be converted into fasd's native format. Below is a list of available

backends.



```

`spotlight`

OSX spotlight, provides entries that are changed today or opened within the

past month



`recently-used`

GTK's recently-used file (Usually available on Linux)



`current`

Provides everything in $PWD (whereever you are executing `fasd`)



`viminfo`

Vim's editing history, useful if you want to define an alias just for editing

things in vim

```



You can define your own backend by declaring a function by that name in your

`.fasdrc`. You can set default backend with `_FASD_BACKENDS` variable in our

`.fasdrc`.



Fasd can mimic [v](http://github.com/rupa/v)'s behavior by this alias:



```sh

alias v='f -t -e vim -b viminfo'

```



# Tweaks



Some shell variables that you can set before sourcing `fasd`. You can set them

in `$HOME/.fasdrc`



```

$_FASD_DATA

Path to the fasd data file, default "$HOME/.fasd".



$_FASD_BLACKLIST

List of blacklisted strings. Commands matching them will not be processed.

Default is "--help".



$_FASD_SHIFT

List of all commands that needs to be shifted, defaults to "sudo busybox".



$_FASD_IGNORE

List of all commands that will be ignored, defaults to "fasd ls echo".



$_FASD_TRACK_PWD

Fasd defaults to track your "$PWD". Set this to 0 to disable this behavior.



$_FASD_AWK

Which awk to use. Fasd can detect and use a compatible awk.



$_FASD_SINK

File to log all STDERR to, defaults to "/dev/null".



$_FASD_MAX

Max total score / weight, defaults to 2000.



$_FASD_SHELL

Which shell to execute. Some shells will run faster than others. fasd

runs faster with dash and ksh variants.



$_FASD_BACKENDS

Default backends.



$_FASD_RO

If set to any non-empty string, fasd will not add or delete entries from

database. You can set and export this variable from command line.



$_FASD_FUZZY

Level of "fuzziness" when doing fuzzy matching. More precisely, the number of

characters that can be skipped to generate a match. Set to empty or 0 to

disable fuzzy matching. Default value is 2.



$_FASD_VIMINFO

Path to .viminfo file for viminfo backend, defaults to "$HOME/.viminfo"



$_FASD_RECENTLY_USED_XBEL

Path to XDG recently-used.xbel file for recently-used backend, defaults to

"$HOME/.local/share/recently-used.xbel"



```



# Debugging



If fasd does not work as expected, please file a bug report describing the

unexpected behavior along with your OS version, shell version, awk version, sed

version, and a log file.



You can set `_FASD_SINK` in your `.fasdrc` to obtain a log.



```sh

_FASD_SINK="$HOME/.fasd.log"

```



# COPYING



Fasd is originally written based on code from [z](https://github.com/rupa/z) by

rupa deadwyler under the WTFPL license. Most if not all of the code has been

rewritten. Fasd is licensed under the "MIT/X11" license.