I have a bash script that calls liquidsoap like so
/bin/sh -c "echo \$\$ > \"${sdir}/pid/${sfile}.pid\" && exec liquidsoap \"${sdir}/liq/${sfile}.liq\" >/dev/null 2>&1 || rm \"${sdir}/pid/{$sfile}.pid\"" &
(For readability, it might look like this with variables filled in)
/bin/sh -c "echo \$\$ > \"/radio/pid/station.pid\" && exec liquidsoap \"/radio/liq/station.liq\" >/dev/null 2>&1 || rm \"/radio/pid/station.pid\"" &
In PHP, the script is called with
return shell_exec("{$this->streamBase}/scripts/{$this->streamName} start config {$stationConfig}");
My problem is, I just had to restart Apache, and when I did, it also killed the liquid soap instances. I would like to get it to run fully independent of Apache such that I could restart Apache and they would keep running.
I'm not sure how I can achieve that.
EDIT: I've tried changing
/bin/sh -c "echo \$\$ > \"${sdir}/pid/${sfile}.pid\" && exec liquidsoap \"${sdir}/liq/${sfile}.liq\" >/dev/null 2>&1 || rm \"${sdir}/pid/{$sfile}.pid\"" &
to
(/bin/sh -c "echo \$\$ > \"${sdir}/pid/${sfile}.pid\" && exec liquidsoap \"${sdir}/liq/${sfile}.liq\" >/dev/null 2>&1 || rm \"${sdir}/pid/{$sfile}.pid\"" & ) &
andnohup /bin/sh -c "echo \$\$ > \"${sdir}/pid/${sfile}.pid\" && exec liquidsoap \"${sdir}/liq/${sfile}.liq\" >/dev/null 2>&1 || rm \"${sdir}/pid/{$sfile}.pid\"" &
Neither keep liquidsoap running if I restart (or stop/start) Apache. When Apache stops, so do those processes.
for an exit code to be propogated up the chain the parents and grandparents must exist, and if you kill the grandparent, aka apache, yes, you kill the children and grandchildren unless they leave the family and become daemons.