Locate

Trying to locate a file, if you're lucky you can try

$ locate $file

Updated your locate database

On FreeBSD:

# vi /etc/locate.rc

as you might want to say add /usr/ports to PRUNEPATH and then:

# /usr/libexec/locate.updatedb

On Debian GNU/Linux:

--prunepath is one of the many options found in the Manual, then rebuild your database:

# /usr/bin/updatedb

Once you have this database, you can use many tools such as which, whereis and locate.

# which bash
/usr/local/bin/bash
# whereis bash
bash: /usr/local/bin/bash /usr/local/man/man1/bash.1.gz /usr/ports/shells/bash
# locate bash
/usr/jail/usr/share/zoneinfo/Africa/Lubumbashi
/usr/local/bin/bash
/usr/local/bin/bash2
/usr/local/bin/bashbug
[snip]