Ubuntu server commands

 lsb_release -r

 lsb_release -c

 lsb_release -c -d -di

Changing Server name

sudo hostnamectl set-hostname your-server-name

Install Essential Packages

Install common tools and utilities:

sh
sudo apt install build-essential curl wget vim git
To check the hostname of an Ubuntu server using the command line, you can use either of the following commands:
Using the hostname command:
sh
hostname
Using the hostnamectl command:
sh
hostnamectl
Using the uname command with the -n option:
sh
uname -n
Any of these commands will display the current hostname of your Ubuntu server.
12. Time Synchronization
Ensure your server's time is accurate:
sh
sudo apt install ntp
sudo systemctl enable ntp
sudo systemctl start ntp

Uname
To display the kernel name:
bash
uname -s
To display the kernel release:
bash
uname -r
To display the machine hardware architecture:
bash
uname -m
To display all information:
bash
uname -a 

10. Automate Backups
Use tools like rsync or deja-dup for backups.
Rsync Example
sh
sudo apt install rsync
Create a backup script (e.g., backup.sh):
sh
#!/bin/bash
rsync -av --delete /source/directory /backup/directory
Make the script executable:
sh
chmod +x backup.sh
Schedule it using cron:
sh
crontab -e
Add a cron job:
plaintext
0 2 * * * /path/to/backup.sh