In Linux system, a group is a collection of users which have the same permissions on files and directories. When troubleshooting problems related with access rights, can be helpful to...

System reboot resets all processes, free up memory, remove temporary files, etc. It can reduce system loads. This tutorial shows how to schedule reboot regularly in Linux. To reboot Linux...

When working with files in Linux, there may need to find all files that contains a specific text. This tutorial shows how to do that. The grep command can be...

When working with filesystem in the Linux, there might be a situation that unable to create or edit file due insufficient permissions. This problem can be solved by setting the...

A tar is an archive file (.tar) for storing collection of files and directories. Various algorithms can be used to compress a tar archive file. The gzip algorithm is one...

A tar is an archive file (.tar) to store collection of files and directories. A tar archive file can be compressed using various algorithms. The gzip algorithm is one of...

When monitoring processes in Linux system, can be useful to know how long process has been running. This tutorial shows how to determine that. First of all, find process ID...

Raspberry Pi Pico board allows to control an external LEDs through GPIO pins. This tutorial provides circuit diagram and code how to blink the external LED using Raspberry Pi Pico...

There are various ways to free up disk space on the system. On of them to delete old files which are no longer needed after a certain period of time...

One of the ways to free up disk space on the system is to delete old files which are no longer needed after a certain period of time. It can...