Useful tips for everyday
How do I uninstall Ubuntu and install Linux Mint? Re: How to remove Ubuntu and shift to Linux Mint? Insert the bootable USB, you should…
How do I make the first 10 lines of a file read only? To look at the first few lines of a file, type head…
How do I refresh my DHCP IP address? Click Start->Run, type cmd and press Enter. Type ipconfig /release at the prompt window, press Enter, it…
Why are there spaces in a variable in Bash? Execute it like this: “$VAR”. This is one of the most significant gotchas in shell scripting…
How do you terminate all child processes? If it is a process group you want to kill, just use the kill(1) command but instead of…
How do you delete a character in vi? To delete one character, position the cursor over the character to be deleted and type x .…
How does Docker work with a firewall? Firewalld only processes the first matching zone for any connections. It also processes zones based on IP address…
What is sysconfdir? ‘ sysconfdir ‘ The directory for installing read-only data files that pertain to a single machine–that is to say, files for configuring…
Why is a Bluetooth device not showing up? For Android phones, go to Settings > System > Advanced> Reset Options > Reset Wi-fi, mobile &…
How to split command by column in Bash? You get the cmmand line of a process with the pid specified and nothing else. This is…