-- trigger --
 
trigger is a small program that launches a command when files that match a
pattern are changed.
 
Using trigger is really simple:
 
  trigger pattern command
 
The pattern must be a valid Ruby regular expression. trigger recursively
searches for all files in the current directory, and keeps only files that
match the given pattern.
 
You can use %% in your command, it will be replaced with the name of the file
that has changed.
 
There are 2 available options:
  -f, --freq: sets the monitoring frequency (defaults to 1 sec)
  -v, --verbose: toggle verbose mode.
 
EXAMPLE
 
This command runs bacon tests whenever a spec of lib file changes:
 
  trigger '(spec|lib)/.*\.rb' bacon spec/*_spec.rb
 
You can use a shell script to achieve some autotest-like behaviour:
  
  trigger '(spec|lib)/.*\.rb' ./spec.sh
 
  #!/bin/bash
  log=`bacon spec/*_spec.rb`
 
  if [ $? != 0 ]; then
    notify-send "Tests failed" "$log"
  fi