Useful tips for everyday
How to match multiple patterns with grep in Linux? Grep OR – Grep AND – Grep NOT – Match Multiple Patterns. The grep, egrep, sed…
How do I run traceroute in Kali Linux? Traceroute is simple. Run the traceroute command followed by a destination. That destination can be an IP…
How to replace the last occurrence of string in sed? The following `sed` command will search the word ‘Jun’ in the string and replace the…
How do you copy and paste in console? Press CTRL + C to copy it, and press CTRL + V to paste it in the…
How to install KDE desktop environment on Ubuntu? You can install it using the following command: This is just the minimal package of KDE with…
How do you upgrade FreeBSD jail? How To Upgrade FreeBSD Jail ( OS Level Virtualization ) Step # 1: Build world. Follow this guide to…
How do I get to GRUB2 menu? With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If…
How system calls are invoked? When a user program invokes a system call, a system call instruction is executed, which causes the processor to begin…
What is device interrupt in ifconfig? 14. The interrupt refers to the interrupt number used by the network adapter. See the breakdown of ifconfig for…
What keyword is used to check multiple conditions with an IF statement? The else keyword provides an alternative execution path that gets executed if the…