sudo時に
bluemoon:~ shin$ sudo /usr/local/apache2/bin/apachectl startWARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.To proceed, enter your password, or type Ctrl-C to abort.
Password:
bluemoon:~ shin$
という警告を出してくれます。
地味・・・。