Revisions to How to wait in bash for several subprocesses to finish, and return exit code !=0 when any subprocess ends with code !=0?

show how to create array as well

edited Jun 21, 2024 at 16:46

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wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in the background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array pids=() for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in the background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in the background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array pids=() for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

update markdown format +2

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edit approved Oct 18, 2021 at 12:33

nextloop

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wait also (optionally) takes the PIDPID of the process to wait for, and with $!$! you get the PIDPID of the last command launched in the background. Modify the loop to store the PIDPID of each spawned sub-process into an array, and then loop again waiting on each PIDPID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in the background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

added link to documentation

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edited Jun 25, 2018 at 10:36

Cristian Ciupitu

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waitwait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done

wait also (optionally) takes the PID of the process to wait for, and with $! you get the PID of the last command launched in background. Modify the loop to store the PID of each spawned sub-process into an array, and then loop again waiting on each PID.

# run processes and store pids in array for i in $n_procs; do ./procs[${i}] & pids[${i}]=$! done # wait for all pids for pid in ${pids[*]}; do wait $pid done