Recently, one of our clients encountered an issue while accessing Zimbra services. Suddenly, all functionalities within the system displayed an “❌” symbol, rendering email sending and receiving unavailable. Upon SSH access to the Zimbra mail server, it was confirmed that…
To change the password for a user account in AlmaLinux, you can use the passwd command. The syntax for the passwd command is: For example, to change the password for the user tom, you would run the following command: This…
To change the password for a user account in Ubuntu, you can use the passwd command. The syntax for the passwd command is: For example, to change the password for the user tom, you would run the following command: This…
What is PostgreSQL? PostgreSQL is an advanced, open-source object-relational database management system (ORDBMS) that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. It is a highly stable and…
What is CSF? ConfigServer Security & Firewall (CSF) is a popular and feature-rich firewall management tool and security enhancement suite for Linux-based servers, including CentOS. It is designed to help administrators secure their servers by providing a comprehensive set of…
What is NFS? NFS stands for Network File System. It is a distributed file system protocol that allows users to access files and directories located on remote computers as if they were local. NFS is a popular file sharing protocol…
gzip command compresses files. Each single file is compressed into a single file. The compressed file consists of a GNU zip header and deflated data.If given a file as an argument, gzip compresses the file, adds a “.gz” suffix, and…
chattr (Change Attribute) is a command line Linux utility that is used to set/unset certain attributes to a file in Linux system to secure accidental deletion or modification of important files and folders, even though you are logged in as a…
ImunifyAV isn’t for everyone. There are many factors when choosing between ImunifyAV FREE and ClamAV. If for whatever reason you decide not to continue using it, uninstalling it is easy via SSH. Stop ImunifyAV ImunifyAV runs as a daemon so…
By default, the system hostname is set during the installation process, or if you are creating a virtual machine it is dynamically assigned to the instance at startup, but there are situations when you need to change it. This tutorial…
