Contributed by Anonymous Monk
on Jul 05, 2000 at 17:53 UTC
Q&A
> programs and processes
Description: I have made a small script to pop up a message on the screen after an event, but I cannot code the CTRL-D command so it won't work.
!#/usr/bin/perl
`smbclient -M victimname';
echo `message is sent to you`;
echo `CTRL-D`;
I have tried numerous fixes and searched the web to no avail.
Many thanks,
M@.F
Answer: Coding CTRL-D
contributed by athomason <CTRL-D> can be displayed, printed, sent, or whatever by chr(4). However, this won't fix your script, since 1) echo isn't a Perl command, 2) if it were, it wouldn't print to smbclient, which I assume you're trying to do, and 3) you shouldn't need to send a <CTRL-D> if you do IPC the right way. You need something like !#/usr/bin/perl -w
use strict;
my ($victim, $message) = ("joe", "bloop");
# open an output pipe to the external program
open SMB, "| smbclient -M $victim";
# print on the pipe's handle
print SMB $message;
# close the handle, which implicitly sends an EOF
close SMB;
Hope that helps. | Answer: Coding CTRL-D
contributed by Anonymous Monk try this:
#!/usr/bin/perl
#other stuff
print pack("c", 04");
# c is for signed character value, and 04 is control-d, aka, EndOfTransmission.
|
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