On Sun, May 16, 2004 at 10:42:11AM -0500, Andrew Gaffney wrote: > Paul D. Kraus wrote: > >I am trying to write a quick script that will establish an ssh tunnel to a > >remote linux server that will let me run vncviewer on any machine behind > >that > >machine. > > > >I have this ... > >system ( "ssh -g -C -L 5900:machinebehindserver:5900 remotelinuxserver" ); > >system ( "vncviewer localhost" ); > > > >of course this doesn't work because it tryes to run vncviewer localhost on > >the > >ssh server rather then on my box. The commands run from terminal work > >fine. I > >run the ssh command then i open another terminal and run the vncviewer. > >Everything is groovy :) > > Change the above ssh command to: > > ssh -N -f -g -C -L 5900:machinebehindserver:5900 remotelinuxserver > > This will send ssh to the background after establishing the tunnel. Also, > you don't need Perl for this. You can easily use a bash script which will > have less overhead. > > #!/usr/bin/bash > > ssh -N -f -g -C -L 5900:machinebehindserver:5900 remotelinuxserver > vncviewer localhost
I came to the same conclusion but had my bash script set up differently it is attached below. This works great but for an exercise of the mind is the a better way to handle this with perl? I know its weird but I use perl everywhere for everything so i kind of avoid bash scripts unless i really can't find a reason to do it in perl :) Is it unnessary to kill the ssh tunnel after the script otherwise it seems to stay open. Maybe i was doing something wrong. This did work however. Sorry for the non-perl code fell free to set me straight with some better perl code to do the same :) <startcode> #!/bin/bash REMOTE=$1 REMOTESERVER=$2 ssh -g -C -N -L 5900:$REMOTE:5900 $REMOTESERVER & SSHPID=$! sleep 1 vncviewer localhost kill $SSHPID <endcode> Paul Kraus -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
