peat repeats commands.
It's kind of like Kicker except:
- It doesn't use inotify or OS X FSEvents, so it'll run anywhere.
- It doesn't require external libraries, so it'll run anywhere with Python.
- It won't eat your CPU (unless you try to watch too much).
- It takes paths to watch on standard input so you can use something like find(1) or friendly-find to specify what to watch.
peat script on your machine and into your
$PATH somehow. Copy and
curl it, or clone the repository. Make sure it's executable.
Generate a list of files you want to watch for changes, separated by whitespace. echo(1), find(1) or friendly-find are good for this:
$ ffind '.*.py$' ./foo.py ./bar.py $ echo *.py foo.py bar.py
Now pipe that to
peat, and specify the command you want to run whenever one of
those files changes:
$ ffind '.*.py$' | peat 'echo "A file changed!"'
Ctrl-C to stop.
The command to run needs to be specified as a single argument to
can do this with a shell string as seen above. Using a single-quoted string
like this will preserve wildcards and such:
$ ffind '.*.py$' | peat 'rm *.pyc'
This will delete all
.pyc files in the current directory when a Python file is
modified. Google around for "shell quoting" if you don't understand what's
Dynamic File Listing
If you want to build the file list fresh each time (so that
peat will pick up
newly created files without having to restart it) you can use the
Instead of piping in the list of files to watch, you'll pipe in a command that
peat will run to generate the list before every check. For example:
$ ffind ".markdown$" ./foo.markdown ./bar/baz.markdown $ echo 'ffind ".markdown$"' ffind ".markdown$" $ echo 'ffind ".markdown$"' | peat --dynamic 'echo "A file changed!"'
If your command contains quotes you'll need to make sure they get passed into peat properly. For example, the following will not work:
$ echo "find . -name '*.markdown'" | peat --dynamic ...
The problem is that the shell will expand the
* in the double-quoted string
before it ever gets to
peat. Google around and learn about shell quoting if
you don't understand. This can be tricky. You've been warned.
Here's the full usage:
Usage: peat [options] COMMAND COMMAND should be given as a single argument using a shell string. A list of paths to watch should be piped in on standard input. For example: find . | peat './test.sh' find . -name '*.py' | peat 'rm *.pyc' find . -name '*.py' -print0 | peat -0 'rm *.pyc' If --dynamic is given, a command to generate the list should be piped in on standard input instead. It will be used to generate the list of files to check before each run. This command must be quoted properly, and this can be tricky. Make sure you know what you're doing. For example: echo find . | peat --dynamic './test.sh' echo find . -name '*.py' | peat --dynamic 'rm *.pyc' Options: -h, --help show this help message and exit -i N, --interval=N interval between checks in milliseconds -I, --smart-interval determine the interval based on number of files watched (default) -d, --dynamic take a command on standard input to generate the list of files to watch -D, --no-dynamic take a list of files to watch on standard in (default) -c, --clear clear screen before runs (default) -C, --no-clear don't clear screen before runs -v, --verbose show extra logging output (default) -q, --quiet don't show extra logging output -w, --whitespace assume paths on stdin are separated by whitespace (default) -n, --newlines assume paths on stdin are separated by newlines -s, --spaces assume paths on stdin are separated by spaces -0, --zero assume paths on stdin are separated by null bytes
Copyright 2012 Steve Losh and contributors.
Licensed under version 3 of the GPL.
Remember that you can use GPL'ed software through their command line interfaces
without any license-related restrictions.
peat's command line interface is
the only stable one, so it's the only one you should ever be using anyway. The
license doesn't affect you unless you're:
- Trying to copy the code and release a non-GPL'ed version of
- Trying to use it as a Python module from other Python code (for your own sanity I urge you to not do this) and release the result under a non-GPL license.