Add colour to grep
It can be quite useful to add colour to your output from
grep, since it helps is identifying matches and hence makes sure you do not overlook something.
$ grep --color <pattern> <file>
Default colour is red, but can be changes using the environment variable
$ GREP_COLOR='1;36' grep --color <pattern> <file>
I have only used two parameters in the above example, You can in addition set the background colour, please see the listed source for more details.