Install Numix icon pack on Debian and Ubuntu

Image courtesy: Numix project

Numix icon theme is very beautiful and makes the desktop more attractive. Numix icon set can be install from Debian and Ubuntu software repositories.

sudo add-apt-repository ppa:numix/ppa
sudo apt update
sudo apt install numix-icon-theme-circle

Enable sudoers in Debian while installation

"Sudo (sometimes considered as short for Super-user do) is a program designed to let system administrators allow some users to execute some commands as root (or another user). The basic philosophy is to give as few privileges as possible but still allow people to get their work done. Sudo is also an effective way to log who ran which command and when" (Debian Wiki).

In normal case, users add to sudoers list after the installation of Debian. This process makes confusion among new Debian users. sudo can be enabled at the time of installation by leaving the root password blank. See the screenshot asking root password while installing Debian. 

If you leave the fields blank and continue, the default user will get administrative power, i.e. sudo power.

After the installation, sudo would be active. I tried this method with Debian 10.

Join/merge pdf files using pdfunite tool

Split PDF files can be merged into a single file using the command line. Here we use a utility called pdfunite, it contains in a bunch of package, poppler-utils. First, install the poppler-utils using the following command. It can work with both Debian and Ubuntu.

sudo apt install poppler-utils

 Usage

Put all your pdf files in a single place. And apply the following command in a terminal. Enter the pdf file names without any mistakes.

pdfunite 1.pdf 2.pdf 3.pdf output.pdf

Syntax

pdfunite source1.pdf source2.pdf source3.pdf destination.pdf

Last file name will be output file.

pdfunite command

PDF source files and output files.

Install Debian 10 (Screenshots)

Download Debian 10 (Buster) with XFCE desktop from Debian Download page. Debian XFCE CD image is a very lightweight desktop suitable to write in a CD (641 MB). Burn-in a CD or USB drive. Boot the medium and start the installation process.

Select your language. Dear English speakers don't select other languages!!

Debian 10 (Buster) Indian repository

Debian Indian repository can speed up the download speed while upgrade and installation of new packages. Indian users get the advantage of local Debian repository. Here is the Indian repository of Debian 10 (Buster).

Add to sources.list

Open the sources.list using your favourite text editor,

su
mousepad /etc/apt/sources.list
Delete or comment out the existing repository details in the file. Copy and paste the following content into the file.
deb http://debianmirror.nkn.in/debian/ buster main
deb-src http://debianmirror.nkn.in/debian/ buster main
deb http://security.debian.org/debian-security buster/updates main
deb-src http://security.debian.org/debian-security buster/updates main
# buster-updates, previously known as 'volatile'
deb http://debianmirror.nkn.in/debian/ buster-updates main
deb-src http://debianmirror.nkn.in/debian/ buster-updates main
Update the repository list and upgrade the packages
apt update
apt upgrade