Another strange thing i found is that if i add ">", in front of abc.sh, it works for me. Can you tell what will ">" do to my script?
open (SNMP1, ">abc.sh |") or die "Cannot run abc.sh $!";
while (<SNMP1>) {
# do some processing
}
close (SNMP1) or die "ERROR: testing $! $?\n ";
You will find you have create a file called abc.sh| in your current working directory. If you had warnings on you would also be warned about trying to read from a file handle opened for writing.