On Sat, Feb 06, 2010 at 05:35:21PM -0800, DennisW wrote:
> On Feb 6, 5:37 pm, djackn <[email protected]> wrote:
> > Result = myIpExec(${IPaddr1} ${IPaddr2} ${IPaddr3} ${IPaddr4})
> >
> > myIpExec is a c program that normally uses scanf to prompt the user
> > for the IP addresses and returns 0 or 1.
> > I plan to use the script to test the program for various inputs.
>
> It is more likely that this would work:
>
> Result=$(echo "{IPaddr1} ${IPaddr2} ${IPaddr3} ${IPaddr4}" | myIpExec)
>
> Note that there are no spaces around the equal sign.
If the result of 'myIpExec' is output to stdout then you could put that into
a shell variable with the syntax that DennisW showed you. But you may have a
problem with parsing it because any prompt for the IP addresses will be included
at the front of that variable.
If the result of 'myIpExec' is actually a return value from main() then you
would access that as the shell variable $? just after the program is run.
The bash 'here string' notation could be used as an alternative to the
echo pipeline notation. It is not as portable. But I like the way it looks
in shell script. It is used like this-
myIpExec <<< "{IPaddr1} ${IPaddr2} ${IPaddr3} ${IPaddr4}"
Result=$?
--
Mike Stroyan <[email protected]>
