Bash: "after" or "waitfor" command
 

Hi,

Is there a command that waits until a process is finished and then excecutes another one? I know I can do things like

but what happens if I run only command1 and then change my mind and want command2 to be run once command1 has finished? (for instance, if command1 takes too long and I want to go to sleep, but shutdown my machine once command1 finishes). Is there something like

??

Thank you very much in advance!!

You can always type command2 in the shell even before
command1 ends but you will have to type return to
validate it so you could'nt be able to edit it

$ command 1 &
$ wait; command2

Thank you!