or download this
qwurx [shmem] 10:59 ~/perlmonks > perl ssh-cmd.pl
Enter a host name to connect to: [qwurx]
...
qwurx: Will not query passphrase for '/home/shmem/.ssh/id_dsa' in batc
+h mode.
qwurx: Loading private key failed.
Permission denied at ssh-cmd.pl line 43