There are a few different ways to install software on a Debian; this not a complete list, and there are various other tools (like Nala) that further extend and modify the native tools.

• dpkg
  • Simple package manager and installer for Debian
  • -i or --install install a given file
    • e.g., sudo dpkg -i example.deb
  • Does not install dependencies
• apt or apt-get
  • Can be used to install packages from repositories/PPAs or locally
    • sudo apt install ./local/path/to/package.deb
    • sudo apt install firefox
• gdebi
  • Termina/GUI wrapper for dpkg that also installs depencies
• qapt-deb-installer
  • A GUI wrapper for APT that makes it easy to install .deb files by double-clicking them (and probably other things)

Metadata

Sources

How to Install a DEB File in Linux? - Scaler Topics
Debian -- Details of package qapt-deb-installer in sid

Tags

#tools_linux