How To Install GCC on Ubuntu 20.04 LTS

Install GCC on Ubuntu 20.04

In this tutorial, we will show you how to install GCC on Ubuntu 20.04 LTS. For those of you who didn’t know, GCC (GNU Compiler Collection) formerly “GNU C Compiler”, is a compiler system produced by the GNU Project. The current version is GCC 9.3, released on March 12, 2020, supporting several major programming languages: C, C++, Objective-C, Objective-C++, Fortran, Ada, D, Go, and BRIG (HSAIL).

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of GCC the C compiler on an Ubuntu 20.04 Focal Fossa server.


  • A server running one of the following operating systems: Ubuntu 20.04, 18.04, 16.04, and any other Debian-based distribution like Linux Mint.
  • It’s recommended that you use a fresh OS install to prevent any potential issues.
  • SSH access to the server (or just open Terminal if you’re on a desktop).
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install GCC on Ubuntu 20.04 LTS Focal Fossa

Step 1. First, make sure that all your system packages are up-to-date by running the following apt commands in the terminal.

sudo apt update
sudo apt upgrade

Step 2. Installing GCC on Ubuntu 20.04.

To set up GCC on Linux Ubuntu 20.04 LTS, the most convenient way is by installing the entire development package build-essential:

sudo apt install build-essential

You may also want to install the manual pages about using GNU/Linux for development:

sudo apt install manpages-dev

Confirm your installation by checking for the GCC version:

$ gcc --version

gcc (Ubuntu 9.4.0-10ubuntu2) 9.4.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO

To test the C compiler, let’s create a small program like the below:

nano hello.c
// hello.c
#include <stdio.h>
int main() {
    printf("Hello, world!\n");
    return 0;

Compile this file with GCC:

gcc hello.c -o hello

The program will result:

Hello World!

Congratulations! You have successfully installed GCC. Thanks for using this tutorial for installing GCC (build-essential) on your Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you check the official GCC website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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