The terms TUN and TAP are commonly used in computer networking terminology. These are the virtual-network kernel devices. TUN is the short of network TUNnel and TAP is the short of network tap. The TUN simulates a network layer device and…
Author: Arunlal A
Senior System Developer at Zeta. Linux lover. Traveller.
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Linux booting process – a short note
This is one of the important questions in a Linux based interview. Both experienced and newbie techs can expect this question from interview board, and it is more confusing. A lot of explanations are available on Internet about Linux Booting Process.…
How to change the apache port via command line in cpanel?
The default port number for Apache web server is port 80. The secure port is 443. In some strange situations, we need to change the default port number from 80 to a different one. In this article I’m going to explain…
How to run FSCK on XEN virtual machine?
I believe you guys are familiar in Xen technology! In this scenario, I’m going to explain how execute file system check (FSCK) on Xen VM (Virtual Machine) which are failed in automatic FSCK check. I had to do this on…
10+ examples of Job Scheduling Using Crontab
Linux Job Scheduling Using Crontab Cron Jobs are used for scheduling tasks to run on the server. The task can be either command or a script. The background process(daemon) behind the cronjob is the crond. In the /etc folder, there is…
How to get a list of total cPanel users under a specific re-seller via command line – WHM/cPanel server
Do you wish to list all cPanel accounts under a specific reseller? If so, it’s very simple to list all cPanel users’ name via command line interface (CLI). There is a file ‘/etc/trueuserowners‘ in your WHM server which has all cPanel…
How to block countries accessing server using csf?
Is it possible to block countries from server using CSF? Yeah, It is very easy to block countries on your server by using an csf (Config server firewall). There is an option in the csf to block IP range from…