| Grep Unix
shorthand for "get regular expression." A grep tool lets programmers
search through a set of text files for a pattern called the regular
expression, which is a syntax that lets you specify in great detail what
kind of text you're looking for. Grep tools are used, for example, to find
and replace variable names or look for patterns such as a Social Security
number. While originally a Unix tool, there are now grep tools on
virtually every platform. |