Colouriser to beautify logfiles or output from commands
http://kassiopeia.juls.savba.sk/~garabik/software/grc.html

Colourizers, colormakes and similar programs are
useful for making files or outputs of different
programs more readable by inserting ansi colour
control codes into them.

This program could eventually provide the
functions of many others.

Two programs are provided: grc and grcat. The
main is grcat, which acts as a filter, i.e. taking
standard input, colourising it and writing to
standard output.