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Error Message :
unable to establish master SSH connection: control command failed: chi
+ld exited with code 1
...
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 0
Couldn't establish SSH connection: unable to establish master SSH conn
+ection: control command failed: child exited with code 1 at ./gen_pas
+swd.pl line 21.

#! /usr/local/ActivePerl-5.14.2.1402/bin/perl

...
$ssh->error and
    die "Couldn't establish SSH connection: ". $ssh->error;