echo aaa \ | (echo bbb 1; cat -e ;echo ccc 1) \ | (echo bbb 2; cat -e ;echo ccc 2) \ | (echo bbb 3; cat -e ;echo ccc 3) \ | (echo bbb 4; cat -e ;echo ccc 4) \ | (echo bbb 5; cat -e ;echo ccc 5) \ | (echo bbb 6; cat -e ;echo ccc 6) \ | (echo bbb 7; cat -e ;echo ccc 7) \ | (echo bbb 8; cat -e ;echo ccc 8) \ | (echo bbb 9; cat -e ;echo ccc 9) sleep 2 echo "My sample :" echo sleep 2 cat sample/subshell.sh