Introduction: Ubuntu Linux is a free and open source operating system based on GNU userland and Linux kernel. Ubuntu is well known for ease of use. It is popular on both desktop and servers. One can update Ubuntu Linux using terminal bash shell. This page shows how to upgrade Ubuntu using terminal session.
How do I update Ubuntu using terminal?
- Open the terminal application
- For remote server use the ssh command to login (e.g. ssh user@server-name)
- Fetch update software list by running sudo apt-get update command
- Update Ubuntu software by running sudo apt-get upgrade command
- Reboot the Ubuntu box if required by running sudo reboot
Let us see all commands in details.
How do I upgrade Ubuntu using terminal?
You need to use either apt command or apt-get command. The apt command provides a high-level command line interface for the package management system. One can install new packages, update packages, remove/delete packages and performer other sysadmin duties for package management using apt.
How to sync the package index files from their sources via Internet
Run the command:
$ sudo apt-get update
$ sudo apt update
How to install the newest versions of all installed packages on Ubuntu
Execute the command:
$ sudo apt-get upgrade
$ sudo apt upgrade
You may need to reboot the Linux server if kernel was updated:
$ sudo reboot
How to update already installed package named nginx
The syntax is:
$ sudo apt install PackageNameHere
Alternatively, you can use the following syntax too:
$ sudo apt-get install PackageNameHere
Let us upgrade nginx package:
$ sudo apt install nginx
If nginx package is already installed it will try to update to latest version:
Reading package lists... Done Building dependency tree Reading state information... Done nginx is already the newest version (1.10.3-0ubuntu0.16.04.2). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
You learned how to update or upgrade Ubuntu Linux using terminal based session.