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File Watcher

Runs a given command when a file is changed.

Example:

# echos the path to a changed .txt file in the ./some/text/files/ directory
# the -c parameter clears the output whenever the file is changed
$ watch ./some/text/files/*.txt -c "echo [filepath]"

# use -o to redirect output
$ watch ./some/text/files/*.txt -c "echo [filepath]" -o test.txt

# OR (note, this will only dump output when you kill the command)
$ watch ./some/text/files/*.txt -c "echo [filepath]" >> test.txt

Usage:

File Watcher - written by Corey Walsh
usage: ./watch.py [options] [file globs] "echo $command-to-run" 
  -h : display this message
  -v : verbose
  -i [int] : milliseconds between file polling
  -o [filename] : file to dump stdout (appends)
  -c : clear output before running command

Standard unix file globs are used for file specification, ex: hello_*.txt

The following command keywords will be replaced with their corresponding value for the changed file:
  [filename]
  [filepath]

Installation:

The easiest way to install this is to simply add a command line alias to your bash profile.

$ export FILE_WATCHER=$(pwd)/watch.py
$ echo "function watch()  { python $FILE_WATCHER \"\$@\"; }" >> ~/.bashrc

This can be accomplished via the install.sh script

$ ./install.sh

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A simple Python script to run terminal commands on file save.

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