Executing ssh from perl

[Stephen Studley]

Apologies in advance if this a well covered issue, as I'm pretty sure 
it has been. I did look through the lists email archive and found too 
many variations on similar issues to be helpful.

Problem: ssh command hangs when executed from perl script using back-tics.

The same command (no back-tics) works as expected from Windows cmd 
shell and cygwin terminal.

I need to capture the return results from the command. i.e.
my $str = `ssh <user>@machine ls <some dir>`;

In looking at the debug output, I simply never get a response from 
the remote machine. The last line in the problem scenario is:
debug3: channel 0: will not send data after close

The successful scenario simply returns the expect stdout:
debug3: channel 0: will not send data after close
<some dir>/<files>

Thanks in advance.

Stephen


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