Testing `nohup`, `&` and `disown`

signal.sh

#!/usr/bin/env bash
# shellcheck disable=SC2128
SOURCED=false && [ "$0" = "$BASH_SOURCE" ] || SOURCED=true
if ! $SOURCED; then
  set -euo pipefail
  IFS=$'\n\t'
fi

mypid="$$"

echo -e "[${mypid}]\\t=> I am going to launch a process"

./sleep.sh 90 & 

echo -e "[${mypid}]\\t=> I have launched a process"

atime=60
echo -e "[${mypid}]\\t=> I am goig to sleep for ${atime} s"
for i in $(seq 1 "${atime}"); do
  echo -e "[${mypid}]\\t=> ${i}"
  sleep 1
done
echo -e "[${mypid}]\\t=> I have launched a process"

exit 0

sleep.sh

#!/usr/bin/env bash
# shellcheck disable=SC2128
SOURCED=false && [ "$0" = "$BASH_SOURCE" ] || SOURCED=true
if ! $SOURCED; then
  set -euo pipefail
  IFS=$'\n\t'
fi

atime="$1"
mypid="$$"

sleep 5
echo -e "[${mypid}]\\t=> I am going to sleep for ${atime} s..."

for i in $(seq 1 "${atime}"); do
  echo -e "[${mypid}]\\t=> ${i}"
  sleep 1
done

echo -e "[${mypid}]\\t=> I have slept for ${atime} s"

exit 0