How to prevent a Linux system user from logging into the system

The shell setting in /etc/passwd determines whether a Linux system user may log in via the shell or over SSH. If you don't want a certain user to be able to log in, set the shell to /bin/false or /sbin/nologin. For the user "otheruser" on Debian and Ubuntu Linux, here's an example: usermod -s /bin/false ... Read more

Get a list of all virtual hosts which are defined in all apache configuration files

Have you ever looked in the apache config files to see where a website's virtual host is defined? The apache2ctl script has a useful option that could come in good here. When you execute the command, it should look like this: apache2ctl -S You'll obtain a list of all virtual hosts and default servers in ... Read more

Linux Basics: The gunzip command explained (with examples)

Linux Gunzip Examples

The gunzip command is a widely used command for uncompressing files which are made using the gzip utility. It decompresses files with the.gz or .tgz file extension. The command removes the compressed file. After decompression, the files retain their original extension. Gzip is a popular file compression algorithm that keeps the file’s original mode, ownership, ... Read more

Dealing with MS Exchange Mailbox Corruption – Reasons & Solutions

Fix corrupted Exchange Mailbox

MS Exchange has undergone many upgrades and a new version with unrivaled features and benefits throughout the years. Despite the fact that the most recent version of MS Exchange Mailbox is not only reliable but also mature, it is nevertheless susceptible to corruption. This platform's security can never be guaranteed. On an Exchange Mailbox, corrupt ... Read more

10 Apt Command Examples You Must Know

apt command examples

The apt is the most powerful command-line utility for managing the packages such as installing packages, updating package info, upgrading packages as well as Linux kernel, and removing unused packages in the Linux Debian family. The apt command is a CLI package managing tool that is a combination of apt-get and apt-cache which is more ... Read more

How to Calibrate Your Monitor in Windows 10

Monitor Calibration

Color Calibration is a feature in Windows 10 that allows you to change the brightness and color contrast of your monitor panels and ensure that all visuals are shown correctly on your computer systems. In this post, we'll show you how to calibrate your display in Windows 10 using the approach described in this article. ... Read more