wajig:tldr:fd723

The command "wajig update" is a command used in Debian-based Linux distributions, such as Ubuntu, to update the package lists and upgrade all the installed packages on the system.

Here's how this command works:

1. "wajig" is a command-line tool that provides a simplified interface for package management tasks on Debian-based systems. It is an alternative to using apt-get or apt commands directly.

2. "update" is one of the subcommands of the wajig tool. This subcommand updates the local cache of available packages from the software repositories. It retrieves the latest information about available packages and their dependencies.

3. Once the package lists are updated, the "wajig" tool also has a built-in feature to upgrade all the installed packages on the system. When you execute "wajig update" command, it automatically performs the "apt upgrade" command, which upgrades all the installed packages to their latest versions.

Overall, running "wajig update" is equivalent to running "apt update" and "apt upgrade" commands in sequence to refresh the package lists and upgrade all the packages on the system.