in reply to Issue while retrieving the unix command return status when executed with perl CPAN module expect.pm
Seems like this came up just a day ago...
$? is being interpolated as a Perl variable and its value is what's making it to the shell. You probably just need to escape the sigil:
$expect->send( "grep xyz *; echo RET_VALUE:\$?" );
...or if there's no need for interpolation anywhere else in your string literal, use single (non-interpolating) quotes:
$expect->send( 'grep xyz *;echo RET_VALUE:$?' );
Update: I just realized why it seemed so familiar: You already asked a question that got you a nearly identical answer, yesterday, in this thread: Incorrect value 0 reported in command execution return value variable $?, when trying with expect->send command. Why? ...At least you got answers that confirmed one another. Seek a third opinion and you'll really have covered your @$$ ;)
Dave
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