How To Install libcoap2 on Ubuntu 20.04
Introduction
In this tutorial we learn how to install libcoap2 on Ubuntu 20.04.
What is libcoap2
libcoap2 is:
Lightweight application-protocol for devices that are constrained their resources such as computing power, RF range, memory, bandwidth, or network packet sizes. This protocol, CoAP, is developed in the IETF working group “CoRE”, http://6lowapp.net and was standardized in RFC 7252.
The libcoap library v2 has DTLS functionality included based on TLS functions provided by OpenSSL in addition to the previous API version.
This package contains the various libcoap libraries based on API v2 with and without DTLS functionality.
There are three methods to install libcoap2 on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libcoap2 Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libcoap2 using apt-get by running the following command:
sudo apt-get -y install libcoap2
Install libcoap2 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libcoap2 using apt by running the following command:
sudo apt -y install libcoap2
Install libcoap2 Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install libcoap2 using aptitude by running the following command:
sudo aptitude -y install libcoap2
How To Uninstall libcoap2 on Ubuntu 20.04
To uninstall only the libcoap2 package we can use the following command:
sudo apt-get remove libcoap2
Uninstall libcoap2 And Its Dependencies
To uninstall libcoap2 and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove libcoap2
Remove libcoap2 Configurations and Data
To remove libcoap2 configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge libcoap2
Remove libcoap2 configuration, data, and all of its dependencies
We can use the following command to remove libcoap2 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libcoap2
References
Summary
In this tutorial we learn how to install libcoap2 package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
