Easily colorize logs or commands output using patterns.

rainbow [ --COLOR=PATTERN ... | --conf CONF ] COMMAND

Just prepend rainbow with COLOR=PATTERN associations to your command, for example:

• Tail some log file with lines containing ERROR in red:

  rainbow --red='.*ERROR.*' -- tail -f /var/log/my.log
  

• Ping Google with IP addresses colorized in yellow:

  rainbow --yellow='\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}' -- ping www.google.com
  

• Rainbow can also read from STDIN instead of providing a command:

  tail -f /var/log/my.log | rainbow --red='.*ERROR.*'
  

Rainbow can read COLOR=PATTERN associations from config files, which is the most common way to use it. It automatically uses the config file if there is one named after the command name in ~/.rainbow, or a builtin one:

• Colorize the diff command output using the builtin config:

  rainbow diff file1 file2
  

• Start JBoss application server with colorized logs:

  rainbow --config=jboss -- jboss/bin/run.sh run
  

The syntax for writing configs is very simple. See the builtin configs for examples.

• Ubuntu/Debian based distributions: coming soon.
• Arch Linux : AUR/rainbow / AUR/rainbow-git.

You can build from sources this way:

git clone git:https://github.com/nicoulaj/rainbow.git
cd rainbow
sudo python setup.py install

This project is a fork of Linibou's colorex. It is is released under the terms of the GNU General Public License. See COPYING for details.