centos - Spawning background process under different user in bash -

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i know can run command spawn background process , pid:

pid=`$script > /dev/null 2>&1 & echo $!`

and run command under different user:

su - $user -c "$command"

i don't want script run root , can't quite figure out how combine 2 , pid of spawned process.

thanks!

i think want runuser command. general syntax:

runuser -l  usernamehere -c 'command'

i suspect if set $script variable above (with appropriate changes), first command want.


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