Do you want to optimize the images or compress images without losing its original quality before uploading them to any cloud or local storages? There are plenty of GUI applications or web applications which are available that will help you to optimize the images. This article helps you to optimize and compress JPEG or PNG images in Linux Command Line.Using jpegoptimjpegoptim is a simple utility to optimize JPEG images without losing quality. It provides lossless optimization and “lossy” optimization based on the setting with a maximum quality factor.To install jpegoptim , use the following command –$ sudo apt-get install jpegoptimThe sample ... Read More

There are several ways to download MP3 tracks from Youtube such as web applications, windows applications and command line tools in Linux. Youtube-DL is one of the best available tools in the market to download tracks from youtube. It is developed in Python programming language. This program can be used in almost all Linux distributions. If you haven’t heard about this tool then this article is for you.Installing Youtube-DLTo install youtube-DL, use the following command –$ sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dlThe sample output should be like this –--2016-03-08 11:41:21-- https://yt-dl.org/downloads/latest/youtube-dl Resolving yt-dl.org (yt-dl.org)... 95.143.172.170, 2001:1a50:11:0:5f:8f:acaa:177 Connecting to yt-dl.org (yt-dl.org)|95.143.172.170|:443... connected. HTTP request ... Read More

While working with computers, we have a habit of saving a lot of information in our computers such as files, folders, etc. Normally desktop looks like a mess but the problem arises when users want to search a modified file on a particular date or time. There are simple commands which are available in Linux to search a modified file. This article describes “How to Find and Sort Files Based on Modification Date and Time in Linux”.List Files Based on Modification TimeThe list command shows a list of files, directories, information about date and time of modification or access, permissions, ... Read More

What do interest-based ads mean? I am sure everybody has seen the online ads. Well, have you noticed how, when you log into a website and the ads show you something you would perhaps be interested in?You could just be browsing and you find the exact computer or mobile or even shoes that you need? Or if you are looking for a new car and there pops an ad for car interiors? Or you are an interior designer and logging on to any website still shows you the curtains you had seen a month ago? Or you could be looking ... Read More

The important part of the system administrators is to monitor and examine for a way long Linux system has been strolling. It is a just right concept to hold tracking up time of the Linux systems to optimise the system assets. This article describes Tuptime tool that can help System Administrators to know for how long a Linux machine has been up and running.Tuptime tool is used for reporting the historical and statistical running time (uptime) of Linux systems, which tracks it between restarts.FeaturesRegister the first boot timeTracks System startupsCounts System shutdownsCalculates uptime and downtimeCalculates largest, average, low uptime and downtimePrint ... Read More

This article is for those who believe that Linux command line is boring and there is not much fun. To create an interesting colorful setting lolcat utility can be used, which produces rainbow colors in Linux terminal. Lolcat utility works for Linux, BSD and OSX which concatenates like similar to cat command.Installing LolcatLolcat utility is one of the gem in Ruby programming language. Hence, if you would like to practice this tip, it is essential to install the latest version of Ruby.To install Ruby use the following command –$ sudo apt-get install rubyThe sample output should be like this –Reading package ... Read More

Screen recording is an awesome feature and supposed to be the best way to illustrate something which is happening on your screen. For instance, if you wish to share your own computer screen for giving training or for gaming purpose, this is definitely a much more easier method than setting up a camera in front of the screen and getting a grainy, shaky video. Moreover, screen recorded videos seem much more professional and educational when it comes to teaching, as learning becomes more practical oriented. The viewer knows exactly what to do and where to go. Much better than sitting ... Read More

Many users are confused whether Linux system’s OS is 32-bit or 64-bit. As we all know, we can’t install 64-bit applications into a 32-bit OS type. Before re-installing Linux or clean Linux, we should verify if Linux system OS is 32-bit or 64-bit. This article guides you about “How to find out Linux operating system system is weather 32-bit or 64-bit”.uname Commanduname is the universal command and it will work on almost all Linux/Unix operating systems. The below command will display your Linux system’s OS type-$ uname -aThe sample output should be like this –$ uname -a Linux linux 4.2.0-30-generic ... Read More

This article will guide you to configure Exim4 SMTP relay server which will allow you to relay emails for the know Domains names and IP address only. In general, this type of service is used to relay emails for notifications for the server health status reports, where the actual email address does not exist or send auto response emails.IntroductionExim4 is a Message Transfer Agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the internet. Exim4 can be installed to replace of Sendmail or Postfix, although the configuration of Exim4 is quite different to that ... Read More

Do you know how to set Time, Timezone from Linux Command Line? If not, then the timedatectl command helps you to set time and Timezone and it comes as a part of systemd system and service manager. This article describes “How to Set Time, Timezone and Synchronize System Clock using timedatectl Command”Find and Set Local Timezone in LinuxTo display time and current date on Linux, use the following command –$ timedatectl statusThe sample output should be like this –    Local time: Fri 2016-03-11 11:23:54 IST Universal time: Fri 2016-03-11 05:53:54 UTC       ... Read More