CLI for apt.
list - list packages based on package names
search - search in package descriptions
show - show package details
update - update list of available packages
install - install packages
remove - remove packages
upgrade - upgrade the system by installing/upgrading packages
full-upgrade - upgrade the system by removing/installing/upgrading packages
edit-sources - edit the source information file
As you can see, it misses a purge option, but I still can type "apt purge" to remove packages, why doesn't it in its manpage?