Implementing infinite wait in shell scripting

Question

This may sound trivial, but I\'m pretty sure this question hasn\'t been asked, or at least I can\'t find it.

I\'m looking for a way to construct an infinite wait

Answer 1

Here's a solution without a loop:

#!/usr/local/bin/dash

echo $$

# -$$: kill process group (parent and children)
#trap 'trap - TERM; kill 0' TERM
#trap 'trap - INT TERM; kill 0' INT TERM

trap 'trap - TERM; kill -s TERM -- -$$' TERM

tail -f /dev/null & wait

exit 0