When a Linux system has an out-of-memory error or runs out of RAM, .i.e. can no longer store data in the virtual memory, it will temporarily use swap space in order to increase the size of the virtual memory available. (more…)
In some situations, processes in Linux can prevent users from starting tasks or installing applications for instance when an apt command is invoked , an error similar to ’could not get lock /var/lib/dpkg/lock-frontend’ (more…)
Computers nowadays are packed with powerful processors and graphics cards in order to cater for the demanding computations and big screens. This however has some consequences on the hardware: heat . (more…)
As computers become more powerful and more efficient, they rapidly drain their batteries because they consume more electricity. While this might depend on the number of running (more…)
In most Linux distros, system administrators would keep an eye on log files from time to time in production environments, in order to get a glimpse at the health of the system, the running state of applications, potential (more…)
Ubuntu logs system events into the log files in order to help administrators maintain, analyze and diagnose system related issues and applications problems. (more…)
As with all large data sets, filtering is necessary to analyze, inspect and diagnose the system. In this article, you will learn about journalctl’s advanced filtering options which could be very useful for system administrators. (more…)
In most Ubuntu and similar Linux distributions, the systemctl tool has replaced power management commands that were used in previous releases. The following commands for instance have been replaced by systemctl as (more…)
Usually when you have Ubuntu installed, it is likely that the system folders and the home folder all belong to the same partition.In order to keep your custom settings, your files and folders, it is recommended that you (more…)
The sudoers file is used by Linux and Unix administrators in general in order to to allocate specific system rights to new and existing system users. This enables the system administrator to control what every (more…)
