Find is a wonderful command that is used in day to day. Some useful commands on find are as follows:

- To search the system for files that were modified within the last three days:

root@server# find / -mtime -3 -print

- List all files named core in the directory /test

root@server# find /test -name core

- To search the current directory and subdirectories for files beginning with name “conf” and prints the path:

root@server# find . -type f -name ‘conf*’ -print

To search in the current directory and all sub directories all files that contain the string “test” and will have their path printed to standard output.

root@server# find . -exec grep -q “test” ‘{}’ \; -print

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There are commands to check load on the server, commands that are used regularly are:

root@server [/]# uptime
13:22:16 up 97 days, 14:02, 1 user, load average: 0.00, 0.01, 0.00

The uptime command displays current time, uptime from when it was last booted, number of user sessions and load averages. The load average is number of processes which were active from past one minute, five minutes and, fifteen minutes.

The information provided by “uptime” command is the same as that provided in the first line of output by the “w” command.

The widely used command to check load is the “top” command. The “top” command will display the load as well as CPU time with the memory usage. It will give you the list of processes, you can also check the memory usage by hitting the “m” in the middle. If you want to kill a particular PID you can hit “k” and type the PID and hit enter. This will kill that particular PID.

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For your domain if you require www you can achieve this by adding the following code in your .htaccess file:

Options +FollowSymLinks
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^www\.domain\.com$ [NC]
RewriteRule ^(.*)$ /$1 [R=301,L]

Now, what if you don’t require www, add this code in your .htaccess:

Options +FollowSymLinks
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^domain\.com$ [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]

Try it.

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