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POPersistent ssh session in Python using Popen
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Id
19823787
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19824065
AnswerCount
2
ClosedDate
CommentCount
12
CommunityOwnedDate
CreationDate
2013-11-06T22:04:53.163
FavoriteCount
0
LastActivityDate
2013-11-06T22:21:10.660
LastEditDate
2017-05-23T11:50:06.803
LastEditorUserId
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OwnerUserId
654789
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PostTypeId
1
Score
1
ViewCount
1180
LastEditorDisplayName
text
Body
I am creating a movie controller (Pause/Stop...) using python where I ssh into a remote computer, and issue commands into a named pipe like so <pre><code>echo -n q > ~/pipes/pipename </code></pre> I know this works if I ssh via the terminal and do it myself, so there is no problem with the setup of the named pipe redirection. My problem is that setting up an ssh session takes time (1-3 seconds), whereas I want the pause command to be instantaneous. Therefore, I thought of setting up a persistent pipe like so: <pre><code>controller = subprocess.Popen ( "ssh -T -x <hostname>", shell = True, close_fds = True, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE ) </code></pre> Then issue commands to it like so <pre><code>controller.stdin.write ( 'echo -n q > ~/pipes/pipename' ) </code></pre> I think the problem is that <code>ssh</code> is interactive so it expects a carriage return. This is where my problems begin, as nearly everyone who has asked this question has been told to use an existing module: <ul> <li><a href="https://stackoverflow.com/a/10684894/654789">Vivek's answer</a></li> <li><a href="https://stackoverflow.com/a/15776329/654789">Chakib's Answer</a></li> <li><a href="https://stackoverflow.com/a/15772823/654789">shx2's Answer</a></li> <li><a href="https://stackoverflow.com/a/15167643/654789">Crafty Thumber's Answer</a></li> <li><a href="https://stackoverflow.com/a/14996859/654789">Artyom's Answer</a></li> <li><a href="https://stackoverflow.com/a/1233808/654789">Jon W's Answer</a></li> </ul> Which is fine, but I am so close. I just need to know how to include the carriage return, otherwise, I have to go learn all these other modules, which mind you is not trivial (for example, right now I can't figure out how pexpect uses either my <code>/etc/hosts</code> file or my ssh keyless authentications).
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<python><ssh>
Title
Persistent ssh session in Python using Popen
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1. PO
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