In this section I have consolidated a bunch of hacks, tips and tricks based on my real time experience on production environment.
In this tutorial we will learn everything about symbolic links in Linux. I will try to be as descriptive as possible so even a newbie can easily understand the concept of symbolic links. A symbolic ...
Read More10+ practical examples to create symbolic link in Linux
In this tutorial I will cover below topics How to deliver mails only to valid users on localhost How to reject mail for unknown users on localhost with Postfix How to reject unknown local recipients ...
Read MoreHow to reject mail for unknown users in postfix (local_recipient_maps)
In this tutorial we will cover below questions: How can I restrict my postfix relay server to be used by only certain IP Address How to restrict relay with postfix to certain IP Network How ...
Read MoreHow to restrict IP Address to use postfix smtp relay
In this tutorial we will configure postfix to use third party GMAIL SMTP Relay server so that our Linux server will be able to send mail to external network using smtp.gmail.com What is SMTP ...
Read More3 easy steps to configure gmail smtp relay with postfix
By now if you have been reading this tutorial, you will realize that some of the Prefix key combinations with tmux are not user friendly. The end user will have to struggle some times to ...
Read More10 practical examples of tmux configuration with examples
In this tutorial I will give a detailed overview on different tmux commands with examples and screenshots form my Linux server terminal. if you don't know this already tmux is an alternative to screen rpm, ...
Read MoreComplete tutorial on tmux commands with examples from scratch
In this tutorial I will share step by step instruction to install vlc player in CentOS 8 Linux. VLC is one of the most used media player across different platforms. One of the reasons I ...
Read More3 simple & easy steps to install vlc player on CentOS 8
How do I grep for an exact match for string or pattern from a file in Linux or Unix. How to search for exact pattern. How to grep exact match with examples? In this tutorial ...
How do we add user to sudoers file? How to give user sudo access? How to give root privileges to a user in linux? how to give superuser permission in linux? What are sudo alias? ...
Read MoreHow to add user to sudoers with best practices & examples
How can I grep multiple strings in single line? Is it possible to grep multiple strings using single command from a file? How to match two or more patterns in single file? There can be ...
Read More3 simple and useful tools to grep multiple strings in Linux