If you are trying to find a program, log into the shell.

Type the command:

# whereis <program>

where 'program' is the program you are looking for, will show you one or more possibilities for what you are looking for.

If you have more than one copy of a program, say one in /usr/bin and another in /usr/local/bin/ ,

typing "which program" will show you which one will be called first.

If you can't find it at all, type command:

# locate <program>

will show you everyfile that matches "program".

Some of the most common programs :
• /usr/sbin/sendmail
• /usr/bin/perl
• /bin/mail
• /usr/bin/php

Default locations for most commonly used configuration files and important directories:

Exim

• /etc/exim.conf
• /var/log/exim_mainlog
• /var/log/exim_rejectlog
• /etc/valiases/
• /etc/vfilters/
• /home/username/.forward

MySQL

• /root/.my.cnf
• /etc/my.cnf
• /var/lib/mysql/

Apache
• /usr/local/apache/conf/httpd.conf
• /usr/local/apache/domlogs/

System
• /var/log/messages
• /var/log/dmesg

Proftpd
• /etc/proftpd.conf
• /var/log/xferlog
• /etc/proftpd/

sshd
• /etc/ssh/sshd_config

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The visionary conceives the impossible, The missionary makes it possible. ...Gita.