The status of a printer can be checked with:
[computer1 ~]# lpq -P 3rdfl
3rdfl is ready
no entries
If the result comes back with:
3rdfl is not ready
The printer needs to be started. This can be done by opening a web browser on the computer and going to localhost:631. However, it’s easier to just enable it from the command line with:
/usr/bin/enable
Be sure to include the /usr/bin part or it will think it’s a shell built-in command and it won’t work.