Shell

Allows you to invoke Unix shell utilities as if they were Perl subroutines. Arguments (including switches) are passed to the utilities as strings:

use Shell qw(date cp ps); # List shell commands you want to use $date = date( ); # Put the output of the date(1) command into $date cp("-p" "/etc/passwd", "/tmp/passwd"); # Copy password file to a tmp file print ps("-ww"); # Print the results of a "ps -ww" command