Introduction to Cat Command in Linux
The cat command is a utility command in Linux. One of its most commonly known usages is to print the content of a file onto the standard output stream. Other than that, the cat command also allows us to write text into a file.
Root Permissions and User Management in Kali Linux
To give root permissions to a user in Kali Linux:
- Edit
/etc/passwdfor the particular user. - Change the user’s UID and GID to ‘0’.
Changing Root from Localhost to Root in Kali Linux
To change root from localhost to root in Kali Linux permanently:
- Edit hostname file by opening
/etc/hostnameand modifying the name. - Edit hosts file by opening
/etc/hostsand modifying the name. - Reboot the system to reflect the changes.
Installing Kali Linux on VirtualBox
With VirtualBox, you can install Kali Linux as a regular application in your Windows/Linux system. It’s similar to running VLC or a game. Running Kali Linux in a virtual machine is also safe.
Understanding Kali Bare Metal
"Bare metal" installation means installing an operating system directly onto the computer hardware, not as a guest virtual machine. Boot the computer from media with the Kali image, recommending the 32-bit Kali Linux version for installation.
System Requirements for Kali Linux
Kali Linux requires:
- a minimum of 20GB hard disk space for installation depending on the version (Version 2020.2 requires at least 20GB)
- a minimum of 2GB RAM for i386 and AMD64 architectures
- a bootable CD-DVD drive or a USB stick
Running Kali Linux with 2GB RAM
On the low end, you can set up Kali Linux as a basic Secure Shell (SSH) server with no desktop, using as little as 128 MB of RAM (512 MB recommended) and 2 GB of disk space.