bash - Wait for last created process (daemon which forks) to end -

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i'm writing wrapper script use in inittab. script starts daemon , waits terminate.

here's have currently: 

#!/bin/bash  /usr/local/bin/mydaemon --lots_of_params_here while kill -0 `echo $!` 2> /dev/null; sleep 1; done;

the problem second line; returns immediately. if instead do:

while kill -0 `pgrep mydaemon` 2> /dev/null; sleep 1; done;

it works fine, isn't solution me have other scripts prefix mydaemon.

what doing wrong?

edit:

the problem seems related daemon fork(). so, parent pid in $!. i'm looking ways solve problem. maybe should use pid files , have mydaemon write pid there.

you can following way through issue.

#!/bin/bash /usr/local/bin/mydaemon --lots_of_params_here & wait $!

wait command wait till process completes , comes out.

if looking wait after other commands can store pid in other variable , use that.

#!/bin/bash /usr/local/bin/mydaemon --lots_of_params_here & mypid=$! ### other commands wait $mypid

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