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Linux administrators and most of linux users use some commands very frequently in CLI. Shortcut commands like alias is very useful for linux admins and users. You can create shortcuts for frequently used commands by adding aliases into the bash…

Introduction General information Physical volumes Volume groups Logical volumes Add space to a volume group Reduce space from an existing volume group Create a Snapshot of LVM Introduction: In this tutorial, I will show some LVM disk management commands in…

Changing a MySQL password sounds like it should be one command. It is, mostly. The confusion comes from there being several routes to the same result, and from the fact that which one works depends on whether a password is…

In MySQL database, a root user has a full access to all of the databases. However, a user (non-root) in MySQL having restrictions in the cases which may be required in different environments, in this tutorial we will learn how…

Forgetting the root password on a machine you own is one of those problems that feels much worse than it is. There is no recovery email, no reset link, and if you have inherited a server from someone who left,…

Essential Linux Commands Command Description pwd Print current working directory ls List files and directories ls -l List with details (long format) cd [directory] Change directory cd .. Go up one directory cp [src] [dest] Copy files or directories mv…

The MySQL database is the most popular database in the open source world, because of ease of use, performance and high reliability. MySQL installation and configuration is very simple. Many of the world’s largest organizations rely on MySQL to save…

Install and configure OpenSSH on CentOS and Ubuntu: sshd_config options, key-based login, scp transfers, tunnelling, and the settings worth changing first.