shutdown command in Linux with Examples

The shutdown command in Linux is used to shutdown the system in a safe way. You can shutdown the machine immediately, or schedule a shutdown using 24 hour format.It brings the system down in a secure way. When the shutdown is initiated, all logged-in users and processes are...

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unexpand command in Linux with Examples

To convert the leading spaces and tabs into tabs, there exists a command line utility called unexpand command. The unexpand command by default convert each spaces into tabs writing the produced output to the standard output. Here’s the syntax of unexpand command : Syntax : $unexpand [OPTION]... [FILE]......

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16 Useful ‘cp’ Command Examples for Linux Beginners

In this article we will demonstrate 16 useful cp command examples specially for the linux beginners. Following is the basic syntax of cp command, Copy a file to another file # cp {options} source_file target_file Copy File(s) to another directory or folder # cp {options} source_file   target_directory Copy...

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Doing It For The Right Reasons: Millennials, Open Source, and Philosophy

Congratulations on choosing a carreer in Linux and Open Source! If you're just starting on the journey, I wish you all the best. I'm thrilled to hear that you've decided to pursue a career in Linux and open source software, and I hope that it brings you lots...

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md5sum Command in Linux with Examples

The md5sum is designed to verify data integrity using MD5 (Message Digest Algorithm 5). MD5 is 128-bit cryptographic hash and if used properly it can be used to verify file authenticity and integrity. Example : Input : md5sum /home/xyz/test/test.cpp Output : c6779ec2960296ed9a04f08d67f64422  /home/xyz/test/test.cpp Importance : Suppose, anyone wants...

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Paste command in Linux with examples

Paste command is one of the useful commands in Unix or Linux operating system. It is used to join files horizontally (parallel merging) by outputting lines consisting of lines from each file specified, separated by tab as delimiter, to the standard output. When no file is specified, or...

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Will A Robot Eat Your Job?

One of my favourite news shows did a depressing story about jobs and careers, that somehow made me feel better about mine. Among my few regular watches on television these days is “Last Week Tonight”, an HBO news/comedy show hosted by Daily Show alumnus and former Brit John...

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Gzip Command in Linux

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gzip command compresses files. Each single file is compressed into a single file. The compressed file consists of a GNU zip header and deflated data. If given a file as an argument, gzip compresses the file, adds a “.gz” suffix, and deletes the original file. With no arguments,...

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free Command in Linux with examples

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While using LINUX there might come a situation when you are willing to install a new application (big in size) and you wish to know for the amount of free memory available on your system. In LINUX, there exists a command line utility for this and that is...

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LPIC-1: iproute2 and NetworkManager

The restructuring of the networking objectives is one of the major changes in LPIC-1 version 5.0. The entire topic 109 is dedicated to the connectivity of your system. The new structure divides the topic into networking fundamentals (109.1), persistent network configuration (109.2), troubleshooting and runtime configuration (109.3) and...

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Are you ready to be a DevOps Engineer?

You have just passed the LPI DevOps certification exam. You are now ready for action when it comes to the tool- and tech-side of DevOps. To become an even better DevOps Engineer, there are three topics that will help you during your daily work, but have only little...

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expand Command in LINUX with examples

Whenever you work with files in LINUX there can be a situation when you are stuck with a file that contains lot of tabs in it and whatever you need to do with file requires that file with no tabs but with spaces. In this situation the task...

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comm command in Linux with examples

comm compare two sorted files line by line and write to standard output; the lines that are common and the lines that are unique. Suppose you have two lists of people and you are asked to find out the names available in one and not in the other,...

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dmesg command in Linux for driver messages

dmesg command also called as “driver message” or “display message” is used to examine the kernel ring buffer and print the message buffer of kernel. The output of this command contains the messages produced by the device drivers. Usage of dmesg : When the computer boots up, there...

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