中文
devexamples

Parallel Jobs Wait And Collect

Run background jobs in parallel with a concurrency limit and wait for all to complete collecting exit statuses.

BashResilience

Code

snippet
#!/usr/bin/env bash
set -uo pipefail

MAX_JOBS=4
pids=()

run_task() {
  local id=$1
  sleep $((RANDOM % 5 + 1))
  echo "Task ${id} done"
}

for i in $(seq 1 20); do
  run_task "$i" &
  pids+=($!)
  if [[ ${#pids[@]} -ge ${MAX_JOBS} ]]; then
    wait "${pids[0]}"
    pids=("${pids[@]:1}")
  fi
done

wait
echo "All tasks completed"

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