1.  sudo apt updatesudo apt install ukuu
2. apt
3. Usage: apt command [options]
4.        apt help command [options]
5.  
6. Commands:
7.   add-repository   - Add entries to apt sources.list
8.   autoclean        - Erase old downloaded archive files
9.   autoremove       - Remove automatically all unused packages
10.   build            - Build binary or source packages from sources
11.   build-dep        - Configure build-dependencies for source packages
12.   changelog        - View a package's changelog
13.   check            - Verify that there are no broken dependencies
14.   clean            - Erase downloaded archive files
15.   contains         - List packages containing a file
16.   content          - List files contained in a package
17.   deb              - Install a .deb package
18.   depends          - Show raw dependency information for a package
19.   dist-upgrade     - Upgrade the system by removing/installing/upgrading packages
20.   download         - Download the .deb file for a package
21.   edit-sources     - Edit /etc/apt/sources.list with your preferred text editor
22.   dselect-upgrade  - Follow dselect selections
23.   full-upgrade     - Same as 'dist-upgrade'
24.   held             - List all held packages
25.   help             - Show help for a command
26.   hold             - Hold a package
27.   install          - Install/upgrade packages
28.   list             - List packages based on package names
29.   policy           - Show policy settings
30.   purge            - Remove packages and their configuration files
31.   recommends       - List missing recommended packages for a particular package
32.   rdepends         - Show reverse dependency information for a package
33.   reinstall        - Download and (possibly) reinstall a currently installed package
34.   remove           - Remove packages
35.   search           - Search for a package by name and/or expression
36.   show             - Display detailed information about a package
37.   showhold         - Same as 'held'
38.   showsrc          - Display all the source package records that match the given package name
39.   source           - Download source archives
40.   sources          - Same as 'edit-sources'
41.   unhold           - Unhold a package
42.   update           - Download lists of new/upgradable packages
43.   upgrade          - Perform a safe upgrade
44.   version          - Show the installed version of a package
45.