Fuser
The fuser utility that comes preinstalled with Linux is a very powerful tool. As the name suggests, it provides information about...
Pascal programming language
The Pascal programming language is one of the foundational reference points in computer science. Developed by Swiss computer scientist Niklaus...
Initial settings of a CentOS 7 VPS server
The basic settings of a VPS server with CentOS 7 are similar to those in Ubuntu. The steps below will...
How to check and monitor a hard drive in Linux
Smartmontools allows Linux administrators to monitor hard drive health using SMART technology. With smartctl and smartd, you can detect disk...
What is MTR
MTR is a simple network diagnostics tool that combines the functionality of traceroute and ping programs commonly used as a...
What is Address Resolution Protocol (ARP)
When a machine wants to send a packet on an Ethernet network, it has the IP address but not the...
What is Perl
Perl is an acronym for Practical Extraction and Report Language. It was designed by Larry Wall to be a tool...
Linux from Scratch
Unlike classic distributions, it does not come with a CD and does not install with a few clicks but is...
What is BASH
Bash is a scripting language compatible with shell commands. It can be executed either from the standard input or from...
Tcl/TK and UML programming languages
Tcl/TK (Tool Command Language) is a scripting language based on strings, interpreted at run time. These features allow it to be...
How to test the speed of the internet connection in the Linux terminal
Speedtest is the most widely used internet speed test tool, but did you know you can run it without a...
What is VSFTPD or Very Secure FTP Daemon
vsftpd (Very Secure FTP Daemon) is an FTP server software for Unix-like systems, including Linux. It is the default FTP...
