Ubuntu Server 21.04

How to Change Hostname on Ubuntu 21.04

August 19th 2021, 7:07
How do you view your hostname? Step 1 : You need to use the hostname command or hostnamectl command hostname Step 2 : Output from the hostname command Setting the hostname Step 1 :Changing the hostname is fairly simple. To do this, we can use the hostnamectl command as root...

How to set up ssh keys on ubuntu server 21.04

August 15th 2021, 4:00
Follow these steps to set up public key authentication: Step 1 : Change to the home directory with cd ~/ cd ~/ Step 2 : Create a .ssh directory if it doesn't already exist mkdir .ssh Step 3 : Create a file named authorized_keys under the .ssh directory touch .ssh/authorized_keys...

How to Set permissions on files and directories on ubuntu server 21.04

August 15th 2021, 4:08
Viewing permissions Step 1 : Use the ls command to list the access permissions of files and directories. ls -l Step 2 : In each line, we see several fields of information. 1 : The permission strings 2 : The link count for the object 3 : The user that...

How to Add User to Sudoers in Ubuntu Server 21.04

August 15th 2021, 3:01
Add User to Sudoers Step 1 : To give additional users access to sudo, all you would need to do is add them to the sudo group sudo usermod -aG sudo myuser Configure sudo Step 2 : User with sudo privileges access to everything, and that may or may not...

How to Manage passwords and password policies on ubuntu server 21.04

August 15th 2021, 12:05
Set an expiration date on a user's password Step 1 : Type chage -l username command to display expiration date on a user's password. sudo chage -l myuser Step 2 : When creating user accounts, The chage command allows you to force a password change for a user when he...

How to Manage Groups on Ubuntu server 21.04

August 15th 2021, 1:18
List all groups Step 1 : The /etc/group file contains information regarding the groups that have been created on your system. Go ahead and take a look at this file on your system: cat /etc/group Creating new groups Step 2 : The groupadd command allows you to create new groups....

How to Create and remove users on ubuntu server 21.04

August 15th 2021, 4:04
Creating users Creating users in Ubuntu can be done with one of either of two commands: adduser and useradd useradd Step 1 : First, Creating a User with specific home directory sudo useradd -d /home/username -m username Step 2 : If you list the storage of /home, you should see...

How to Install Ubuntu Server 21.04

August 15th 2021, 1:48
Step 1 : Insert the Ubuntu installation media into the appropriate drive, power on the system and follow the onscreen instructions to open the boot menu. The key you press at the beginning of the POST process differs from one machine to another, but it's quite often F10, F11, or...