Categories
DailyOps

How to upgrade Ubuntu distribution using GUI

Upgrade Ubuntu distribution from 20.10 to 21.04 using GUI.

Categories
SysOps

How to export block devices list as JSON

Export block devices list as JSON and parse using jq utility.

Categories
DailyOps

How to recover deleted photos

Recover deleted photos from SD card.

Categories
SysOps

How to start service on the privileged port as a regular user

Start service on the privileged port as a regular user.

Categories
SysOps

How to disable Network Manager connectivity checks

Four different ways to disable Network Manager connectivity checks.

Categories
SysOps

How to extend RandR valid modes for an output

Using passive adapters to connect DisplayPort output to HDMI or DVI input is problematic with wide-screen monitors as these adapters supports a maximum resolution of 1920×1200 at 60Hz. This issue can be alleviated by adding a specific mode to the set of valid output modes.

Categories
SysOps

How to deal with overlapping LVM names

Today, I will connect the secondary encrypted hard disk from the previous Ubuntu installation to copy personal data, so there will be a problem with overlapping LVM names.

Categories
SysOps

How to use lightweight compressed cache for swap pages

Configure a lightweight compressed cache for swap pages to mitigate the performance impact of swapping on your desktop.

Categories
SysOps

How to configure swap using zram at boot

Configure compressed swap using zram device at system boot.

Categories
SysOps

How to use compressed RAM based block devices

Take advantage of compressed RAM based block devices to create temporary filesystems and swap disks.