shell_bash_spawn_wait – Create 100 parallel jobs and wait until they are done https://codescreens.com

shell_bash_spawn_wait

#!/bin/bash

# http://www.gnu.org/software/bash/manual/bash.html#The-Set-Builtin
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o nounset -o errexit -o pipefail

# https://www.percona.com/blog/2017/10/01/one-million-tables-mysql-8-0/

function long_run
{
    echo job $1 begin
    sleep 5
    echo job $1 end
}

# Create 100 parallel jobs and wait until they are done
for i in {1..100}; do
    long_run $i &
done

wait

echo all done