#!/bin/bash echo '### Test id = --id `tty`' parallel --id `tty` -u --semaphore seq 1 10 '|' pv -qL 20 echo '### Test default id = --id `tty`' parallel -u --semaphore seq 11 20 '|' pv -qL 100 echo '### Test --semaphorename `tty`' parallel --semaphorename `tty` --semaphore --wait echo done