itsfosslinux

How to Install whois command on Ubuntu/Debian

In this article, we will see how to install whois command on Ubuntu/Debian based systems. whois is a free and open source tool to check the registry information, contact information and other related information of a domain depending on the domain's privacy settings in Linux based systems. It works by querying WHOIS servers to retrieve ... Read more

How to Install Nmap on Ubuntu/Debian

In this article, we will see how to install nmap on Ubuntu/Debian based systems. Nmap is a free and open source network scanner tool for network discovery and security auditing. It is often used by security testers, penetration testers and network testers to perform security analysis of an organization computer network. Nmap scans the network ... Read more

How to Update or Upgrade Packages on Ubuntu/Debian

In this article, we will see how to update or upgrade packages on Ubuntu/Debian. In Linux based systems, it is always recommended to update or upgrade system packages to the latest available versions. This can be done differently in different linux systems using their default package manager. For example on Ubuntu/Debian based systems, you can ... Read more

How to Permanently Change hostname in Linux

In this article, we will see how to permanently change hostname in Linux. Many times you might have noticed that setting hostname is absolutely critical for setting up of different server and services. If you try to set hostname using hostname command then it would temporarily show in current terminal session but as soon as ... Read more