Directory Tags for Lazy Programmers
dtags is a lightweight command line tool with tab-completion which lets you:
- Tag and un-tag directories
- Change directories quickly via tags
- Run commands in tagged directories at the same time
- Use shell variables to reference tagged directories
- Easily manage git repositories, vagrant machines etc.
Step 1: Check requirements:
- Python 2.7+ or 3.4+
- Recent version of pip
- Recent version of Bash, Zsh or Fish with tab-completion enabled
Step 2: Install the package:
# You may need to sudo depending on your setup ~$ pip install --upgrade dtags
Step 3: Add the following line at the end of your shell runtime configuration:
# For zsh, place in ~/.zshrc: command -v dtags-activate > /dev/null 2>&1 && eval "`dtags-activate zsh`" # For bash, place in ~/.bashrc (or ~/.bash_profile for OS X): command -v dtags-activate > /dev/null 2>&1 && eval "`dtags-activate bash`" # For fish, place in ~/.config/fish/config.fish: command -v dtags-activate > /dev/null 2>&1; and dtags-activate fish | source
Step 4. Restart your shell.
Once installed, you will have 5 commands at your disposal: t, u, d, e and dtags.
Tag directories with t:
~$ t ~/web dev work # add tags 'dev' and 'work' to ~/web ~$ t ~/app # tag ~/app with its basename, 'app'
Un-tag directories with u:
~$ u ~/web dev # remove tag 'dev' from ~/web ~$ u ~/app # remove all tags from ~/app
Change directories with d (designed to fully replace cd!):
~$ d # go to the user's home directory ~$ d frontend # go to the directory tagged 'frontend' ~$ d tag_with_many_dirs # prompt the user to select a specific directory ~$ d ~/app # go to directory ~/app
Execute commands in one or more directories with e:
~$ e repo git status # execute 'git status' in directories tagged 'repo' ~$ e ~/vm vagrant halt # execute 'vagrant halt' in directory ~/vm ~$ e -p vm git pull # execute 'git pull' in directories tagged 'vm' in parallel ~$ e vm,~/foo ls # execute 'ls' in directories tagged 'vm' and ~/foo
Display, search and manage tags with dtags:
~$ dtags # display the directories-to-tags mapping ~$ dtags list ~ ~/vm # display the tags and directories associated with ~ and ~/vm ~$ dtags list foo bar # display the tags and directories associated with 'foo' or 'bar' ~$ dtags reverse # display the tags-to-directories (reverse) mapping ~$ dtags edit # edit tags and directories via editor like vim ~$ dtags clean # remove invalid or stale tags and directories ~$ dtags commands # display all available dtags commands (e.g. t, u, d, e)
If a tag points to a single directory, shell variables are automatically created:
~$ t ~/some/dir foo # shell variable $foo is automatically created ~$ ls $foo/sub/dir # $foo can be used to denote the tagged directory ~/some/dir ~$ rm $foo/file.sh # $foo can be used to denote the tagged directory ~/some/dir
You can always use the --help option to find out more about each command!
- The directory-to-tags mapping is stored in ~/.dtags/mapping
- Tags are also stored on their own in ~/.dtags/tags for tab-completion
- e -p is currently not supported on Windows
- e -p cannot execute interactive commands that wait on input
- e -p spawns child processes and redirects their output to temporary files and then to stdout
- e -p sends sigterm to its child processes when killed
- e uses environment variable $SHELL to guess which shell is in use
- e redirects stderr to stdout and always returns an exit status of 0
- e uses interactive shell and this has pros and cons:
- The user has access to all linux functions and aliases
- The shell runtime configuration must be “sourced” each execution
- The performance of e is affected by the shell startup time (beware oh-my-zsh users)
- Any errors thrown during the “sourcing” will show up in the output
- dtags edit uses environment variable $EDITOR
- d prefers tags over subdirectories when there are name conflicts
- To go to the subdirectory, put a / after the directory name
- d expects ~/.dtags/mapping to be correctly formatted:
- Please refrain from editing ~/.dtags/mapping directly.
- Instead, use dtags edit which does the validation and formatting for you
- Tab-completion expects ~/.dtags/tags to be correctly formatted:
- Don’t touch this file at all if possible
- If this is deleted, it is auto-generated the next time a dtags command is run.
- For a shell variable to be created automatically, the tag name must not conflict with environment variable names
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