fdisk (fixed disk or format disk) is a command-line utility for creating and managing disk partitions in Linux and other Unix-based systems. In other words, fdisk is a command used to create, view, modify, and delete partitions on a hard drive. fdisk works by making changes to the disk’s partition table. The partition table stores… Read More »
Ram timings are technical specs about ram modules that are installed in laptops or desktops. These number indicate the performance of the ram module interms of how fast they can read and write data. The appear as 4 number set separated by a hyphen, for example like this: 16-16-16-39. Now these numbers tell us how… Read More »
The dmesg command is a powerful tool used to control and read log messages stored in the kernel ring buffer of Linux and other Unix-based operating systems. During boot-up and runtime, the kernel stores messages produced by device drivers, hardware devices, and kernel modules in a ring buffer. These stored log messages can be reviewed… Read More »
What is Snap Snap is a software packaging and deployment system (similar to deb) developed by Canonical for Linux. It has version control capabilities which help maintain multiple releases of a particular application (aka snaps). Though it is a proprietary solution from Canonical, Snap is available for other linux distros like Fedora, CentOS and Manjaro… Read More »
Grep Command Grep command in Linux is primarily used to search files for specific patterns of text, but there is a lot more it can do. The name “grep” is derived from the command used to perform a similar operation “ed” text editor with the operation: g/re/p ((globally search for a regular expression and print… Read More »
The 7z LZMA benchmark runs dummy compression and decompression tasks to measure the overall performance of the system. It reports measurements in MIPS (million instructions per second) which give an idea of the computer’s raw processing power counting all factors. 7z LZMA compression is a multi-threaded work-load. This means that it can utilise multiple cores… Read More »
So recently I was looking for a command to check the live power consumption of cpu in watts. I tried different commands like powertop, powerstat, lm-sensors but none of them worked properly. lm-sensors did show the temperatures of individual cores of the cpu, but could not display the watts being consumed in realtime. Other commands… Read More »
Getting detailed information about the wifi adapter on a linux system is not straight forward using gui tools. However there are simple commands that can do the trick. In this article we shall take a look at commands like iwconfig, iwlist, iw and nmcli which can be used to probe details about the wifi adapter… Read More »
Open Ports Ports are opened on a system by various background services like http server, database server, smtp server etc. If you are running a webserver and launch any such service then it will open a port so that other systems on the internet or local network can connect to it. After you start a… Read More »
This quick tutorial shows you how to use the “Touch” command on Linux to create new files or modify the access and modification times of existing files.
The top command is a useful command line tool to monitor processes on Linux. This post shows simple examples of how to use the top command on Linux.
The tar command can be used to create compressed archives from the command line on linux, as well as extract files from compressed archives. Here are some quick examples of how to use it.
This tutorial shows how to specify and use external smtp servers to send emails from command line on Linux using commands like mailx and swaks, along with support for authentication and encryption.
Quick tutorial with simple examples of how to use the mailx command on Linux to send emails from command line with features like attachments and external smtp servers.
Here is a quick list of 10 commands that you can use to check the partitions on hard drives and disks on your Linux system and how much space each partition has.
Quick look at various commands that can be used to gather hardware information related to cpu, disks, memory, peripherals etc on Linux based systems
Quick tutorial on how to use the lshw (list hardware) command to get hardware information on Linux systems like Ubuntu, Fedora etc.
The hwinfo command can be used to check hardware information about various devices on Linux systems like Ubuntu, Fedora and CentOS, and this post shows some examples.
Here are some command line tools that can be used to analyse and monitor network bandwidth usage on your Linux server.
Tutorial on how to monitor network and socket connections on linux with ss command ( socket statistics )