All,
I want to capture the exit value of a system call. How can I do this?
My code is:
system ( " cat /tmp/foo" );
if ( $? == 0 ) {
blah blah blah
}
I read the cookbook and it says :
Both wait and waitpid return the process ID that they just reaped and set $? to the
wait status of the defunct process. This status is actually two
8-bit values in one 16-bit number. The high byte is the exit value of the
process. The low 7 bits represent the number of the signal that killed the
process, with the 8th bit indicating whether a core dump occurred. Here's
one way to isolate those values:
$exit_value = $? >> 8;
$signal_num = $? & 127;
$dumped_core = $? & 128;
Derek B. Smith
OhioHealth IT
UNIX / TSM / EDM Teams
