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Top Forums Shell Programming and Scripting Pass return value of a function in background process Post 302966660 by MadeInGermany on Monday 15th of February 2016 07:10:35 AM
Old 02-15-2016
And, if you wait for a background process, then it's the same as if you run it in the foreground.
So, in general the answer is "no, you cannot get a result from a background process".
--
The exit status of a function is the one from the last process.
Code:
f1(){
  ls "$@"
}
f1 "/dir"; echo "exit status $?"

If you want ta return the status from a previous command then use the following
Code:
f1(){
ls "$@"
save_exit=$?
echo "another command"
return $save_exit
}

 

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shell(1F)							   FMLI Commands							 shell(1F)

NAME
shell - run a command using shell SYNOPSIS
shell command [command] ... DESCRIPTION
The shell function concatenate its arguments, separating each by a space, and passes this string to the shell ($SHELL if set, otherwise /usr/bin/sh). EXAMPLES
Example 1: A sample output of shell command. Since the Form and Menu Language does not directly support background processing, the shell function can be used instead. `shell "build prog > /dev/null &"` If you want the user to continue to be able to interact with the application while the background job is running, the output of an exe- cutable run by shell in the background must be redirected: to a file if you want to save the output, or to /dev/null if you don't want to save it (or if there is no output), otherwise your application may appear to be hung until the background job finishes processing. shell can also be used to execute a command that has the same name as an FMLI built-in function. NOTES
The arguments to shell will be concatenate using spaces, which may or may not do what is expected. The variables set in local environments will not be expanded by the shell because "local" means "local to the current process." ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), attributes(5) SunOS 5.10 5 Jul 1990 shell(1F)
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