How to send Ctrl^C to a program via Expect module

perlisfun has asked for the wisdom of the Perl Monks concerning the following question:

As you know, Expect module is very useful. I use it to start/stop a prcess. Sometimes, startup processing takes too long. I tried to send Ctrl^C to abort this processing. I don't know how to send Ctrl characters. thanks,

PerlIsFun

Comment on How to send Ctrl^C to a program via Expect module

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Re: How to send Ctrl^C to a program via Expect module by Fletch (Bishop) on Jul 22, 2004 at 19:36 UTC
`kill INT => $expect_object->pid();`	[reply] [d/l]
Re^2: How to send Ctrl^C to a program via Expect module by perlisfun (Sexton) on Jul 27, 2004 at 20:33 UTC
Thank you very much. It works very well. PerlIsFun	[reply]
Re: How to send Ctrl^C to a program via Expect module by beable (Friar) on Jul 23, 2004 at 06:47 UTC
You should use the `soft_close()` or `hard_close()` methods. Please take a look at the documentation for the Expect module. Here's a simple example: `#!/usr/bin/perl use strict; use warnings; use Expect; my $command = "cat > tmp.txt"; my @params; my $exp = Expect->spawn($command, @params) or die "Cannot spawn $command: $!\n"; print("sending...\n"); $exp->send("Hello world\n"); sleep 1; $exp->hard_close; __END__` [download] Or, if you really want to send Ctrl-C to your process, try this: `$exp->send("\cC");`. Or you can just send a signal to the process like Fletch recommends.	[reply] [d/l] [select]