lpq — Show printer queue status
Summary:
lpq shows the current print queue status on the named printer. Jobs queued on the default destination will be shown if no printer/class is specified on the command-line.
Example:
$ lpq — Show the default printer Queue status.
$ lpq -P prn2 — Show the printer PRN2 status.
$ lpq -a — Show all printers status.
$ lpq -l — Show in long format.
$ lpq +5 — Show the status of the default printer status for every 5 Sec interval, until queue become empty.
Read: man lpq