What directory?
 

What directory are programs installed? I am using SUSE 9.2

I don't know specifically for SUSE, but programs can be installed anywhere. Usually, you'll find them under /usr or /home. Specifically:

/usr
/usr/local
/usr/bin
/usr/sbin
/usr/local/bin
/usr/local/sbin

Try using the "which" or "locate" commands to find where some things are installed.

which ls -> /bin/ls
locate *squid -> one answer is "/usr/local/squid/sbin/squid"

-Dan

also "whereis"
 

Another handy command is "whereis"

> whereis ifconfig
/sbin/ifconfig
>

If you need to access a program that isn't in your PATH, add it by editing $HOME/.bash_profile



Finally, you can use "find" a command or file.

>find / -name "file_name" - will search / (root) for file_name - note that unless you run this as the user root you'll get "permission denied" errors.

To get help with commands, try man <command_name> . "man" is short for manual, and will bring up a manual page for the command and any configuration files that accompany it, as well, usually, as it's normal location.

Cheers,
Scott

These two links may be worth looking at

http://www.comptechdoc.org/os/linux/commands/
http://tldp.org/HOWTO/HighQuality-Apps-HOWTO/fhs.html

Sheng-Chieh