$ whatis apt

$ whatis apt-get

$ whatis apt-cache

$ whatis sources.list

$ whatis apt.conf

$ whatis apt.config

apt (8) - command-line interface

apt-get (8) - APT package handling utility -- command-line interface

sources.list (5) - List of configured APT data sources

apt.conf (5) - Configuration file for APT

apt.conf (5) - Configuration file for APT

apt-config (8) - APT Configuration Query program

Examples:

1. apt --help

2. apt list openssh-client

3. apt search openssh

4. apt show openssh-client

Please click on "

man apt to see the Manual Page for this command.

man apt-get to see the Manual Page for this command.

man apt-cache to see the Manual Page for this command.

man sources.list to see the Manual Page for this command.

man apt.conf to see the Manual Page for this command.

man apt-config to see the Manual Page for this command.