How To Install python-rjsmin on Ubuntu 18.04
Introduction
In this tutorial we learn how to install python-rjsmin on Ubuntu 18.04.
What is python-rjsmin
python-rjsmin is:
rJSmin is a javascript minifier written in Python. The minifier is based on the semantics of jsmin.c by Douglas Crockford.
The module is a re-implementation aiming for speed, so it can be used at runtime (rather than during a preprocessing step). Usually it produces the same results as the original jsmin.c. It differs in the following ways:
- there is no error detection: unterminated string, regex and comment literals are treated as regular javascript code and minified as such.
- Control characters inside string and regex literals are left untouched; they are not converted to spaces (nor to)
- Newline characters are not allowed inside string and regex literals, except for line continuations in string literals (ECMA-5).
- “return /regex/” is recognized correctly.
- Line terminators after regex literals are handled more sensibly
- “+ +” and “- -” sequences are not collapsed to ‘++’ or ‘–’
- Newlines before ! operators are removed more sensibly
- Comments starting with an exclamation mark (!) can be kept optionally
- rJSmin does not handle streams, but only complete strings. (However, the module provides a “streamy” interface).
Since most parts of the logic are handled by the regex engine it’s way faster than the original Python port of jsmin.c by Baruch Even. The speed factor varies between about 6 and 55 depending on input and Python version (it gets faster the more compressed the input already is). Compared to the speed-refactored Python port by Dave St.Germain the performance gain is less dramatic but still between 3 and 50 (for huge inputs)). See the docs/BENCHMARKS file for details.
This package contains the Python 2.7 module.
There are three methods to install python-rjsmin on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install python-rjsmin Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install python-rjsmin using apt-get by running the following command:
sudo apt-get -y install python-rjsmin
Install python-rjsmin Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install python-rjsmin using apt by running the following command:
sudo apt -y install python-rjsmin
Install python-rjsmin 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 python-rjsmin using aptitude by running the following command:
sudo aptitude -y install python-rjsmin
How To Uninstall python-rjsmin on Ubuntu 18.04
To uninstall only the python-rjsmin package we can use the following command:
sudo apt-get remove python-rjsmin
Uninstall python-rjsmin And Its Dependencies
To uninstall python-rjsmin and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove python-rjsmin
Remove python-rjsmin Configurations and Data
To remove python-rjsmin configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge python-rjsmin
Remove python-rjsmin configuration, data, and all of its dependencies
We can use the following command to remove python-rjsmin configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge python-rjsmin
References
Summary
In this tutorial we learn how to install python-rjsmin package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
