How to convert HDR video to SDR with ffmpeg

By | September 15, 2023

HDR vs SDR HDR (High Dynamic Range) is the newer and more advanced version of display technology that shows more colorful and brighter pictures on displays that support it. It is much superior to its predecessor SDR. Videos in HDR format use 10-bits for storing color information and use different color transfer functions compared to… Read More »

Examples of “iotop” command in Linux – Monitor disk input/output per process

By | June 6, 2023

Iotop is an open-source and free utility Linux command used to display the statistics of disk input/output by processor/threads and print the summary which gets refreshed every second. It is quite similar to the top command, except that iotop monitors just disk i/o and not other metrics. This command is particularly useful for system administrators… Read More »

11 “sar” Command Examples in Linux to Monitor System Resources

By | September 15, 2023

sar (System Activity Reporter) is a command line tool used to collect, report, and analyze system activity information in Linux and other Unix-based operating systems. In other words, it gathers information and provides insights on system activity, such as CPU utilization, memory usage, I/O operations, network activity, disk usage, power management, and much more, which… Read More »

Multipass Command Examples – Create and Manage Ubuntu Virtual Machines

By | May 30, 2023

Multipass is a lightweight, command-line virtualization tool developed by Canonical that allows you to create and manage Ubuntu virtual machines (VM) on your local machine. It lets you run multiple isolated instances of Ubuntu for development and testing. Multipass is cross-platform, which means you can run it on macOS, Windows, and Linux. However, on Linux,… Read More »

Basic Docker Command Examples on Ubuntu – Get Images and Launch Containers

By | May 30, 2023

Docker is a popular “containerization” platform that allows developers to run applications inside isolated environments called containers. Containers are similar to virtual machines, however they do not run an entire operating system (like virtualbox, qemu). In principle containers are somewhat similar to the classic that could be used to setup a completely isolated environment within… Read More »

15 Things to do after installing Kubuntu 23.04

By | June 5, 2023

Switch to better DNS servers Switch to better dns servers like google dns or open dns. I personally use google dns servers: 8.8.8.8 , 8.8.4.4 Right click on the network management icon on the system tray and “Configure Network Connections”. Go to IPv4 tab and enter the dns servers as shown below. You can also… Read More »

How to check Ram Rank and Bank details in Linux – decode-dimms

By | May 20, 2023

The decode-dimms program from i2c-tools package can be used to extract spd information from the ram modules which provides details about the module including the timings, clock speed, internal layout of the memory blocks including rank and bank count. The command can be installed with the following commands: sudo apt-get install i2c-tools sudo modprobe eeprom… Read More »