Use DKIM Key With WHM, cPanel, Cloudflare

DKIM is one of useful thing to make email which is sent by your domain to be avoided marked as spam.

When you use cloudflare for that domain, there is some change that you need to do on the DKIM key.

For example on your WHM (Edit DNS Zone) or cPanel (Email > Authentication), you will get DKIM key with format like this :

"v=DKIM1; k=rsa; p=XXXX" YYY\;

How to Append Date and Time to Log File in Linux

If we want to get detailed log report, we can store multiple log files with date and time information on the file name 🙂

We can do this command in Linux :

your_command_here > /path_1/path_2/your_log_$(date +"%Y-%m-%d_%H-%M-%S").txt

How to Delete Files in Directory in Linux

If you want to delete files within a directory in Linux, you can use this simple command

rm -f /your/directory/*

If you want to delete files and directories recursively within a directory in Linux, you can use this command instead 🙂

rm -rf /your/directory/*

Empty a File Using Linux Command

Today i received an e-mail notification from cpanel that a partition in my server is almost full.
First i checked largest directories / files using this command :

du -h --max-depth=1 /some/path

Then i noticed that they were some log files which took space in my partition 🙂


How to Remove Directory and Subdirectories Recursively in Linux

Sometimes there is occasion where deleting files from Cpanel takes a very long time to finish.
For example because there are too many files under a directory.
In this situation we can use SSH to delete a directory and all files and subdirectories under that directory.

We can use the command below.
But be careful, do not enter wrong path.
You may delete the wrong directory. 🙂

rm -rf /your/directory/