% ./tester Enter quit to stop enter a cmd line> ls -l -a Command line: ls -l -a 0 #ls# 1 #-l# 2 #-a# run in the background is false Command line: ls -l -a 0 #ls# 1 #-l# 2 #-a# run in the background is false enter a cmd line> yo ho ho & Command line: yo ho ho & 0 #yo# 1 #ho# 2 #ho# run in the background is true Command line: yo ho ho & 0 #yo# 1 #ho# 2 #ho# run in the background is true enter a cmd line> a b c def ghijk lmnop q & Command line: a b c def ghijk lmnop q & 0 #a# 1 #b# 2 #c# 3 #def# 4 #ghijk# 5 #lmnop# 6 #q# run in the background is true Command line: a b c def ghijk lmnop q & 0 #a# 1 #b# 2 #c# 3 #def# 4 #ghijk# 5 #lmnop# 6 #q# run in the background is true enter a cmd line> pwd Command line: pwd 0 #pwd# run in the background is false Command line: pwd 0 #pwd# run in the background is false enter a cmd line> quit