Ubuntu

How to reduce image size in Linux command line without losing quality. On Ubuntu, users can reduce image file size via command line using convert command. Installing ImageMagick Run the following commands in terminal to install ImageMagick on Ubuntu via Appimage: $ wget https://download.imagemagick.org/ImageMagick/download/binaries/magick $ chmod +x magick $ sudo mv magick /usr/bin/ $ ./magick […]

How to check how many users are created in Linux. Here is an easy way to check current user in Linux and check user details in Linux. Check user details in Linux You can check user details in Linux using who command. ‘who’ prints information about users who are currently logged on. If you want […]

How to check total virtual memory size in Linux Ubuntu? Here are the commands to check virtual memory usage in Linux Ubuntu. Virtual Memory Linux supports virtual memory, that is, using a disk as an extension of RAM so that the effective size of usable memory grows correspondingly. The kernel will write the contents of […]

If you are looking for ways to check user activity log in Linux, you can use the who command to see the list of users who are currently logged in Linux Ubuntu. How To Check User Activity Log In Linux There are various commands to get the list of users who are currently logged in […]

How to compare two directories in Linux recursively and compare files in two directories. This tutorial explains how to compare two directories for missing files and differences in Linux. Compare two directories for missing files in Linux The ‘comm’ command is used to compare two sorted files line by line. The ‘comm’ writes to standard […]

How to fix username is not in the sudoers file, this incident will be reported in Ubuntu. How to add user to sudoers file which is not in sudoers file. Reason for the error “Username is not in the sudoers file This error is reported in Ubuntu when: 1. Fixing Sudo Error Using /etc/sudoers Open […]