Useful tips for everyday
Can a bash script be executed on multiple remote servers? Let’s have a hypothetical scenario where you need to execute a BASH script on multiple…
When do I need to start my PostgreSQL server? Normally, you will want to start the database server when the computer boots. Autostart scripts are…
How do I know if I have Unix or Linux? How to find your Linux/Unix version On command line: uname -a. On Linux, if the…
How can I change my MAC address without root? How can I change MAC address on Android devices without Root? Open up settings and then…
How do I fix the ACPI BIOS error in Ubuntu? Hold down Left-Shift on boot to bring up the GRUB menu. Press e to edit…
How do you replace digits in a string? you can use Java – String replaceAll() Method. This method replaces each substring of this string that…
Is semicolon an operator? Semicolon is a command in C++. The Semicolon lets the compiler know that it’s reached the end of a command. Semicolon…
How to tail a log file in Linux? Basically, you’d define a function to be called on, say, signal 17, then put a sub-script in…
What does etc resolv conf contain? It is used to configure dns name servers. The file /etc/resolv. conf file contains information that is read by…
Why is my Arch Linux not booting properly? I have installed Arch Linux for the first time, I have attempted to setup my UEFI boot…