Useful tips for everyday
How to calculate the number of lines in AWK? AWK has a built-in variable known as NR. It counts the number of input lines read…
How do I get my crontab back? You can try to have a look at /var/log/cron and build your crontab again. Have a look at…
What are the configuration files in XKB for Linux? The configuration files contained in /usr/share/X11/xkb can be divided in 3 groups accordingly to their aim:…
Is there a way to remove all duplicate lines? The first mode removes all duplicate lines across the entire text. The second mode removes only…
How to configure NetworkManager to ignore certain devices? Configuring NetworkManager to Ignore Certain Devices 3.4. Configuring IP Networking with GNOME GUI 3.4.1. Connecting to a…
How do I upgrade to Apache 2.4 41 or later? You can also use these steps to upgrade Apache 2.2 to 2.4 or even update…
How do I install Visudo? Adding sudo Users with Root Privileges on a UNIX Client Log on to the client computer as root. Open the…
How to run Python 3 http.server on port 80? I want to run Python 3 http.server on port 80, without running it as root and…
How do I go back from root to normal? You can switch to a different regular user by using the command su. Example: su John…
Why does my sound not work after my computer goes to sleep? If your Windows 10 PC loses sound after booting from Sleep mode, you…