signal through popen2

[Philip Swartzleonard]

Lei Chen || Sat 09 Feb 2002 08:47:15p:

> Hi,
> 
> I would like to send a CTRL-C on a process opened by popen2.  Is this
> possible? 
> 

I haven't used popen's before, but i assume you have some method of 
sending a string through it? Then sure, you just have to look up the 
character number that you get from a ctrl-c, i'm not sure what it is. 
But to send, say, a tab, linefeed, and carrage return through (using the 
raw numbers), you would have a string like

"\x09\x0a\x0d"
(if you type this in a shell python will display it as '\t\n\r')

So you would have something like mypipe.write('\xNN'), where NN is the 
hex number of whatever it is ctrl-c does.

But then, the real way of doing what you want to do may be slighly 
different... like closing a socket to produce a proper eof signal... 


-- 
Philip Sw "Starweaver" [rasx] :: www.rubydragon.com