How To Install pg-checksums-doc on Kali Linux

Introduction

In this tutorial we learn how to install pg-checksums-doc on Kali Linux.

What is pg-checksums-doc

pg-checksums-doc is:

Data checksums allow the PostgreSQL database server to identify I/O failures when reading data from storage. The checksums stored in the page header of each data page are compared to the computed checksum of the read data.

Data checksums need to be activated at instance creation time, all current versions of PostgreSQL including v11 do not allow activating (or deactivating) checksums afterwards.

pg_checksums can activate or deactivate data checksums as long at the database cluster is shutdown cleanly. Activating checksums requires all database blocks to be read and all page headers to be updated, so can take a long time on a large database. Deactivating checksums only requires the cluster control file to be updated so is quick.

In addition, pg_checksums can verify the checksums in an offline cluster.

This package contains the manpage.

There are three methods to install pg-checksums-doc on Kali Linux. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install pg-checksums-doc Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install pg-checksums-doc using apt-get by running the following command:

sudo apt-get -y install pg-checksums-doc

Install pg-checksums-doc Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install pg-checksums-doc using apt by running the following command:

sudo apt -y install pg-checksums-doc

Install pg-checksums-doc Using aptitude

If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install pg-checksums-doc using aptitude by running the following command:

sudo aptitude -y install pg-checksums-doc

How To Uninstall pg-checksums-doc on Kali Linux

To uninstall only the pg-checksums-doc package we can use the following command:

sudo apt-get remove pg-checksums-doc

Uninstall pg-checksums-doc And Its Dependencies

To uninstall pg-checksums-doc and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove pg-checksums-doc

Remove pg-checksums-doc Configurations and Data

To remove pg-checksums-doc configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge pg-checksums-doc

Remove pg-checksums-doc configuration, data, and all of its dependencies

We can use the following command to remove pg-checksums-doc configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge pg-checksums-doc

Dependencies

pg-checksums-doc have the following dependencies:

References

• pg-checksums-doc website

Summary

In this tutorial we learn how to install pg-checksums-doc package on Kali Linux using different package management tools: apt, apt-get and aptitude.