#!/usr/bin/env bash
# Running multiple tasks and checking status

task() {
    local label=$1
    local seconds=$2

    printf '%s: starting\n' "$label"
    sleep "$seconds"
    printf '%s: finished\n' "$label"
}

task alpha 2 &
pid_alpha=$!

task beta 1 &
pid_beta=$!

status=0

wait "$pid_alpha" || status=1
wait "$pid_beta" || status=1

if [ $status -eq 0 ]; then
    printf 'All tasks succeeded\n'
else
    printf 'At least one task failed\n' >&2
    exit 1
fi