CLI Tools

Essentials

If you build software, development tools are required to install. It's also useful for building packages on your system. Development tools contain few general useful tools like gcc, g++ and make.

sudo apt install build-essential

curl command is a tool to download or transfer files/data from or to a server using FTP, HTTP, HTTPS, SCP, SFTP, SMB and other supported protocols on Linux or Unix-like system.

sudo apt install curl

btop is a system monitoring utility.

sudo apt install btop

pydf is an advanced command line tool and a good alternative to Linux df.

sudo apt install pydf

ack is a grep-like text finder.

sudo apt install ack

bat is a cat(1) clone with syntax highlighting and Git integration.

sudo apt install bat

OpenLDAP utilities.

sudo apt install ldap-utils

Miscellaneous

ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
sudo apt install ffmpeg

GNOME Screenshot is a utility used in the GNOME desktop environment for taking screenshots. To take a screenshot with a delay:
gnome-screenshot -d 5

Grip is a command-line server application written in Python that uses the GitHub markdown API to render a local readme file.
sudo -H pip install grip

jq is a lightweight and flexible command-line JSON processor.
sudo apt install jq

ngrok is a tunneling, reverse proxy that establishes secure tunnels from a public endpoint to a locally running network service while capturing all traffic for inspection and replay.