Introduction
In this tutorial we learn how to install libdbix-safe-perl on Ubuntu 20.04.
What is libdbix-safe-perl
libdbix-safe-perl is:
The purpose of the DBIx::Safe module is to give controlled, limited access to
an application, rather than simply passing it a raw database handle through
DBI. DBIx::Safe acts as a wrapper to the database, by only allowing through
the commands you tell it to. It filters all things related to the database
handle – methods and attributes.
The typical usage is for your application to create a database handle via a
normal DBI call to new(), then pass that to DBIx::Safe->new(), which will
return you a DBIx::Safe object. After specifying exactly what is and what is
not allowed, you can pass the object to the untrusted application. The object
will act very similar to a DBI database handle, and in most cases can be used
interchangeably.
By default, nothing is allowed to run at all. There are many things you can
control. You can specify which SQL commands are allowed, by indicating the
first word in the SQL statement (e.g. ‘SELECT’). You can specify which
database methods are allowed to run (e.g. ‘ping’). You can specify a regular
expression that allows matching SQL statements to run (e.g. ‘qr{SET
TIMEZONE}’). You can specify a regular expression that is NOT allowed to run
(e.g. qr(UPDATE xxx}). Finally, you can indicate which database attributes
are allowed to be read and changed (e.g. ‘PrintError’). For all of the above,
there are matching methods to remove them as well.
There are three methods to install libdbix-safe-perl 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 libdbix-safe-perl Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libdbix-safe-perl using apt-get by running the following command:
sudo apt-get -y install libdbix-safe-perl
Install libdbix-safe-perl Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libdbix-safe-perl using apt by running the following command:
sudo apt -y install libdbix-safe-perl
Install libdbix-safe-perl 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 libdbix-safe-perl using aptitude by running the following command:
sudo aptitude -y install libdbix-safe-perl
How To Uninstall libdbix-safe-perl on Ubuntu 20.04
To uninstall only the libdbix-safe-perl package we can use the following command:
sudo apt-get remove libdbix-safe-perl
Uninstall libdbix-safe-perl And Its Dependencies
To uninstall libdbix-safe-perl and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove libdbix-safe-perl
Remove libdbix-safe-perl Configurations and Data
To remove libdbix-safe-perl configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge libdbix-safe-perl
Remove libdbix-safe-perl configuration, data, and all of its dependencies
We can use the following command to remove libdbix-safe-perl configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libdbix-safe-perl
References
Summary
In this tutorial we learn how to install libdbix-safe-perl package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.
