Filters

grep

Print lines matching a pattern.

pcregrep

A grep with Perl-compatible regular expressions.

agrep

Search a file for a string or regular expression, with approximate matching capabilities.

expand

Convert tabs to spaces.

unexpand

Convert spaces to tabs.

tr

Translate or delete characters.

flip

Convert text file line endings between Unix and DOS formats.

cut

Remove sections from each line of files.

paste

Merge lines of files.