Here is the code that isn't working: 
open(LS, qq{/usr/local/openssh/bin/ssh -p 22 foo\@localhost "if [ -d /
+home/foo/bar/20110826 ] ; then echo 1 ; else echo 0 ; fi" |});
my $baz = <LS>;

[download]

The code hangs on me indefinitely. The strange thing is that, if I put it in a one-liner, it runs fine. Any ideas?

EDIT: I found the issue. The code had set 

local $SIG{CHLD} = sub {
    1 until waitpid(-1 , WNOHANG) == 1;
};

[download]
to solve another issue, and this caused the process to sit in an infinite loop after termination.

In reply to open on ssh command stuck by lackita

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