Magnificent app which corrects your previous console command

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Project description

Magnificent app which corrects your previous console command, inspired by a [@liamosaur](https://twitter.com/liamosaur/) tweet.

gif with examples

Few more examples:

➜ apt-get install vim
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

➜ fuck
sudo apt-get install vim [enter/↑/↓/ctrl+c]
[sudo] password for nvbn:
Reading package lists... Done
...
➜ git push
fatal: The current branch master has no upstream branch.
To push the current branch and set the remote as upstream, use

    git push --set-upstream origin master


➜ fuck
git push --set-upstream origin master [enter/↑/↓/ctrl+c]
Counting objects: 9, done.
...
➜ puthon
No command 'puthon' found, did you mean:
 Command 'python' from package 'python-minimal' (main)
 Command 'python' from package 'python3' (main)
zsh: command not found: puthon

➜ fuck
python [enter/↑/↓/ctrl+c]
Python 3.4.2 (default, Oct  8 2014, 13:08:17)
...
➜ git brnch
git: 'brnch' is not a git command. See 'git --help'.

Did you mean this?
    branch

➜ fuck
git branch [enter/↑/↓/ctrl+c]
* master
➜ lein rpl
'rpl' is not a task. See 'lein help'.

Did you mean this?
         repl

➜ fuck
lein repl [enter/↑/↓/ctrl+c]
nREPL server started on port 54848 on host 127.0.0.1 - nrepl://127.0.0.1:54848
REPL-y 0.3.1
...

If you are not scared to blindly run the changed command, there is a require_confirmation settings option:

➜ apt-get install vim
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

➜ fuck
sudo apt-get install vim
[sudo] password for nvbn:
Reading package lists... Done
...

Requirements

  • python (2.7+ or 3.3+)

  • pip

  • python-dev

Installation

Install The Fuck with pip:

sudo pip install thefuck

Or using an OS package manager (OS X, Ubuntu, Arch).

You should place this command in your .bash_profile, .bashrc, .zshrc or other startup script:

eval "$(thefuck --alias)"
# You can use whatever you want as an alias, like for Mondays:
eval "$(thefuck --alias FUCK)"

Or in your shell config (Bash, Zsh, Fish, Powershell, tcsh).

Changes will be available only in a new shell session. To make them available immediately, run source ~/.bashrc (or your shell config file like .zshrc).

Update

sudo pip install thefuck --upgrade

Aliases changed in 1.34.

How it works

The Fuck tries to match a rule for the previous command, creates a new command using the matched rule and runs it. Rules enabled by default are as follows:

  • cargo – runs cargo build instead of cargo;

  • cargo_no_command – fixes wrongs commands like cargo buid;

  • cd_correction – spellchecks and correct failed cd commands;

  • cd_mkdir – creates directories before cd’ing into them;

  • cd_parent – changes cd.. to cd ..;

  • composer_not_command – fixes composer command name;

  • cp_omitting_directory – adds -a when you cp directory;

  • cpp11 – adds missing -std=c++11 to g++ or clang++;

  • dirty_untar – fixes tar x command that untarred in the current directory;

  • dirty_unzip – fixes unzip command that unzipped in the current directory;

  • django_south_ghost – adds --delete-ghost-migrations to failed because ghosts django south migration;

  • django_south_merge – adds --merge to inconsistent django south migration;

  • docker_not_command – fixes wrong docker commands like docker tags;

  • dry – fixes repetitions like git git push;

  • fix_alt_space – replaces Alt+Space with Space character;

  • fix_file – opens a file with an error in your $EDITOR;

  • git_add – fixes “Did you forget to ‘git add’?”;

  • git_branch_delete – changes git branch -d to git branch -D;

  • git_branch_list – catches git branch list in place of git branch and removes created branch;

  • git_checkout – fixes branch name or creates new branch;

  • git_diff_staged – adds --staged to previous git diff with unexpected output;

  • git_fix_stash – fixes git stash commands (misspelled subcommand and missing save);

  • git_not_command – fixes wrong git commands like git brnch;

  • git_pull – sets upstream before executing previous git pull;

  • git_pull_clone – clones instead of pulling when the repo does not exist;

  • git_push – adds --set-upstream origin $branch to previous failed git push;

  • git_push_pull – runs git pull when push was rejected;

  • git_stash – stashes you local modifications before rebasing or switching branch;

  • go_run – appends .go extension when compiling/running Go programs

  • grep_recursive – adds -r when you trying to grep directory;

  • gulp_not_task – fixes misspelled gulp tasks;

  • has_exists_script – prepends ./ when script/binary exists;

  • heroku_no_command – fixes wrong heroku commands like heroku log;

  • history – tries to replace command with most similar command from history;

  • java – removes .java extension when running Java programs;

  • javac – appends missing .java when compiling Java files;

  • lein_not_task – fixes wrong lein tasks like lein rpl;

  • ls_lah – adds -lah to ls;

  • man – changes manual section;

  • man_no_space – fixes man commands without spaces, for example mandiff;

  • mercurial – fixes wrong hg commands;

  • mkdir_p – adds -p when you trying to create directory without parent;

  • no_command – fixes wrong console commands, for example vom/vim;

  • no_such_file – creates missing directories with mv and cp commands;

  • open – prepends http to address passed to open;

  • pip_unknown_command – fixes wrong pip commands, for example pip instatl/pip install;

  • python_command – prepends python when you trying to run not executable/without ./ python script;

  • python_execute – appends missing .py when executing Python files;

  • quotation_marks – fixes uneven usage of ' and " when containing args’

  • rm_dir – adds -rf when you trying to remove directory;

  • sed_unterminated_s – adds missing ‘/’ to sed’s s commands;

  • sl_ls – changes sl to ls;

  • ssh_known_hosts – removes host from known_hosts on warning;

  • sudo – prepends sudo to previous command if it failed because of permissions;

  • switch_layout – switches command from your local layout to en;

  • systemctl – correctly orders parameters of confusing systemctl;

  • test.py – runs py.test instead of test.py;

  • tsuru_login – runs tsuru login if not authenticated or session expired;

  • tsuru_not_command – fixes wrong tsuru commands like tsuru shell;

  • tmux – fixes tmux commands;

  • whois – fixes whois command.

Enabled by default only on specific platforms:

  • apt_get – installs app from apt if it not installed;

  • brew_install – fixes formula name for brew install;

  • brew_unknown_command – fixes wrong brew commands, for example brew docto/brew doctor;

  • brew_upgrade – appends --all to brew upgrade as per Homebrew’s new behaviour;

  • pacman – installs app with pacman or yaourt if it is not installed.

Bundled, but not enabled by default:

  • git_push_force – adds --force to a git push (may conflict with git_push_pull);

  • rm_root – adds --no-preserve-root to rm -rf / command.

Creating your own rules

For adding your own rule you should create your-rule-name.py in ~/.thefuck/rules. The rule should contain two functions:

match(command: Command, settings: Settings) -> bool
get_new_command(command: Command, settings: Settings) -> str | list[str]

Also the rule can contain an optional function side_effect(command: Command, settings: Settings) -> None and optional enabled_by_default, requires_output and priority variables.

Command has three attributes: script, stdout and stderr.

Settings is a special object filled with ~/.thefuck/settings.py and values from env (see more below).

Simple example of the rule for running script with sudo:

def match(command, settings):
    return ('permission denied' in command.stderr.lower()
            or 'EACCES' in command.stderr)


def get_new_command(command, settings):
    return 'sudo {}'.format(command.script)

# Optional:
enabled_by_default = True

def side_effect(command, settings):
    subprocess.call('chmod 777 .', shell=True)

priority = 1000  # Lower first, default is 1000

requires_output = True

More examples of rules, utility functions for rules.

Settings

The Fuck has a few settings parameters which can be changed in ~/.thefuck/settings.py:

  • rules – list of enabled rules, by default thefuck.conf.DEFAULT_RULES;

  • require_confirmation – requires confirmation before running new command, by default True;

  • wait_command – max amount of time in seconds for getting previous command output;

  • no_colors – disable colored output;

  • priority – dict with rules priorities, rule with lower priority will be matched first;

  • debug – enables debug output, by default False.

Example of settings.py:

rules = ['sudo', 'no_command']
require_confirmation = True
wait_command = 10
no_colors = False
priority = {'sudo': 100, 'no_command': 9999}
debug = False

Or via environment variables:

  • THEFUCK_RULES – list of enabled rules, like DEFAULT_RULES:rm_root or sudo:no_command;

  • THEFUCK_REQUIRE_CONFIRMATION – require confirmation before running new command, true/false;

  • THEFUCK_WAIT_COMMAND – max amount of time in seconds for getting previous command output;

  • THEFUCK_NO_COLORS – disable colored output, true/false;

  • THEFUCK_PRIORITY – priority of the rules, like no_command=9999:apt_get=100, rule with lower priority will be matched first;

  • THEFUCK_DEBUG – enables debug output, true/false.

For example:

export THEFUCK_RULES='sudo:no_command'
export THEFUCK_REQUIRE_CONFIRMATION='true'
export THEFUCK_WAIT_COMMAND=10
export THEFUCK_NO_COLORS='false'
export THEFUCK_PRIORITY='no_command=9999:apt_get=100'

Developing

Install The Fuck for development:

pip install -r requirements.txt
python setup.py develop

Run unit tests:

py.test

Run unit and functional tests (requires docker):

FUNCTIONAL=true py.test

For sending package to pypi:

sudo apt-get install pandoc
./release.py

License MIT

Project License can be found here.

Project details

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