How To Install units-filter on Ubuntu 20.04
Introduction
In this tutorial we learn how to install units-filter
on Ubuntu 20.04.
What is units-filter
units-filter is:
Units-filter is a basic standalone filter written in C language, flex and bison. It inputs strings like “1.5e3 nN.m.s^-1” (it could be the time growth ratio of a torque) and outputs the value in standard SI unit, followed by the physical dimension of this value.
example :~/src$ echo 1.5e3 nN.m.s^-1 | units-filter 1.5e-06 2 1 -3 0 0 0 0 0 0
2 -3
which means : 1.5e-06 (SI unit) m .kg.s
This parser can be embedded in educational test systems, in order to analyze a student’s answer to a problem of physics or chemistry.
There are three methods to install units-filter
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 units-filter Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install units-filter
using apt-get
by running the following command:
sudo apt-get -y install units-filter
Install units-filter Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install units-filter
using apt
by running the following command:
sudo apt -y install units-filter
Install units-filter 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 units-filter
using aptitude
by running the following command:
sudo aptitude -y install units-filter
How To Uninstall units-filter on Ubuntu 20.04
To uninstall only the units-filter
package we can use the following command:
sudo apt-get remove units-filter
Uninstall units-filter And Its Dependencies
To uninstall units-filter
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove units-filter
Remove units-filter Configurations and Data
To remove units-filter
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge units-filter
Remove units-filter configuration, data, and all of its dependencies
We can use the following command to remove units-filter
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge units-filter
References
Summary
In this tutorial we learn how to install units-filter
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.