In regards to your second question (How To Keep Text From Being Displayed), I like to make system calls to stty. It's quick and dirty. 
#turn off the terminal's echo
`stty -echo` ;

[download]

If you do this sort of thing, don't forget to turn it back on. Just to be extra safe, consider doing this, too: 
# turn echo back on, an extra check before we exit
END { `stty echo` }

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It's kind of a mess if the program exits and echo is still off.

Hope it helps. Peace monks,
Bro. Doug :wq

In reply to Re: SSH leaving terminal confused issue by Bro. Doug
in thread SSH leaving terminal confused issue by wulvrine

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