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Reduce or increase laptop display brightness from command line

Note: Recently my Archlinux distro stop responding to the shortcut Fn+F3 and Fn+F4 for screen brightness adjustment. Then I found this solution at: https://www.ejmastnak.com/tutorials/arch/backlight/.

First, find out the value of your laptop.

cat /sys/class/backlight/intel_backlight/brightness

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Find the package of executable

pacman -Qo executable_name_without_path

For example:

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Fix dirty NTFS disk from Linux

The problem

Sometimes when try to mount an NTFS disk in Linux, you get at journalctl the error:

ene 17 10:52:55 hp3nvyl17 kernel: ntfs3: sda1: It is recommened to use chkdsk.
ene 17 10:52:55 hp3nvyl17 kernel: ntfs3: sda1: volume is dirty and "force" flag is not set!

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Get full control of resolv.conf

Edit NetworkManager.conf

Open /etc/NetworkManager/NetworkManager.conf and add:

[main]
dns=none

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Compile to Windows executable from Linux

Install zig

By any means, using default distro package manager, or any other method, install zig. Please, install zig first...

Compile project

CGO_ENABLED=1 \

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Compare strings in command line

[ "$string1" = "$string2" ] && echo OK || echo NO

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Conquer resolv.conf

Check that resolv.conf is inmutable

lsattr /etc/resolv.conf

If it is, the previous command will output something like this:

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Useful SQL queries

List databases by creation date

SELECT table_schema AS Database_Name, MIN(create_time) AS Creation_Time FROM information_schema.tables WHERE table_schema like 'some_db_name%' Group by table_schema;

List databases with size

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Retry command

timeout 10 bash -c 'until git push -v; do sleep 10; done'

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Create RRD with custom options

#!/bin/sh

###################################################
# Create the graph first
###################################################
#
# rrdcreate wlan-traffic.rrd --start now-2h --step 60 DS:in:COUNTER:120:U:2000000 DS:out:COUNTER:120:U:2000000 RRA:AVERAGE:0.5:1:525600 RRA:AVERAGE:0.5:60:8760