I had a problem with john miller's bash script because bash didn't die
quickly enough for the microsleep to get re-parented by init (upstart),
so here is a better version:
#!/bin/bash
usleep 1 &
firstPID=$!
#first lets exhaust the space
while (( $! >= $firstPID ))
do
usleep 1 &
done
# [ will use testPID itself, we want to use the next pid
declare -i testPID
testPID=$(($1 - 1))
while (( $! < $testPID ))
do
usleep 1 &
done
# fork a background process then die so init reaps its pid
sleep 3 &
echo "Init will reap PID=$!"
kill -9 $$
# EOF
Example usage:
# sh /tmp/upstart_fix.sh 19915
Init will reap PID=19915
Killed
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https://bugs.launchpad.net/bugs/406397
Title:
init: job stuck with expect fork/daemon when parent reaps child
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