> # echo '/dev/zip /mnt/zip vfat noauto,user 0 0' \>>/etc/fstab
> 
> When I did a more on it to see if the changes took place, I noticed that
> it whacked the original lines in there for the other devices.

And I bet I know why. Why is there a slash before >> ? The slash would
have escaped the first > from the shell, sending it on the command line
to echo. The shell then sees just one >, which means wipe out the
contents of the file with whats being piped. Two >> means to append to
the end...