Continuing our series, in today’s article, we’ll go over the until loop in shell scripts. We’ve already covered for loops and while loops in shell scripts in our previous tutorials. You’ll find a lot of similarities in the while and…
The chmod (change mode) command in Linux is used to change the access mode of a file, based on the type of user accessing the file and the type of permission associated with accessing the file. File Permissions and User…
When you buy a new home appliance, it is accompanied by a user manual that explains the functions of the appliance. Similarly, when you download and install a new package for Linux, the user manual for the program is automatically…
CouchDB is a free and open-source fault-tolerant database made and maintained by the Apache Software Foundation. It is a very good choice for a NoSQL type database, where you do not want a relational database. In this tutorial, we shall…
We talked about the while, for, and until loops in shell scripts in the past few tutorials now. Let’s learn the select loop in shell scripts, a very interesting and unique loop in bash. Why is it interesting or unique?…
The uname and whoami commands help you understand details like kernel version, name, hostname, etc of the Linux system you are using and what user is currently logged in. Simple yet useful, both the commands are very commonly used by…
The hosts’ file is an extremely useful albeit small text file that stores host names with associated IP addresses. It is basically a mapping from hostnames to IP addresses. Any network protocol uses this mapping to convert hostnames to numeric…
The Linux wget command is a command-line utility to download files from the internet over HTTP, HTTPS, and FTP protocols. The wget command is usually available on most Linux distros by default, but if you do not have it installed…
The mkdir command in Linux is used to make directories, hence the command is named mkdir. With traditional GUI systems, if you want multiple directories, you have to create one directory at a time. The mkdir is a very flexible…
Let’s have a look at a really simple to use firewall, the UFW firewall. As a system administrator, it is our duty to make sure that the systems we work on are secured from attackers. There are multiple methods to…