Hello, This maybe a little off topic so feel free to respond privately. I am trying to test a doubletalk speech synthesizer using the cat command. From the discussions forum from the apple website I was told that, $ echo $'\00' | cat would append a NUL character to the cat command? I wanted cat to append a NUL character at the end of a listing? I found out that my synthesizer needs a NUL character to speak. Like when I ran cat with nothing after it if I typed text, I wouldn't get any audio output. But if I ended the text with NUL my synthesizer would speak the text. So I am trying to append a NUL character to the cat command? But I can't seem to get the line from the apple website working? Any help would be appreciated. Sent from my iPhone