To shortcut your recently used commands in Ubuntu command line you can use bashrc aliases.
You can place your alias in ~/.bashrc file or to separate ~/.bash_aliases file.
I prefer second one to keep ~/.bashrc in original state.
So we need to open ~/.bash_aliases file for edit and put required aliases there.
And add new line for each alias you need. For example:
alias upgrade='sudo apt-get update && sudo apt-get upgrade'
Save and close file using
Esc -> :wq -> Enter
Now close terminal and reopen it to get new alias command.
Now check it:
It will ask you a password and then upgrade your system.