Re: Problems with -M feature when executing within a script

[Paul Eggert]

   From: "Burdick, Fred" <address@hidden>
   Date: Mon, 30 Oct 2000 19:42:48 -0500

   We tried to implement gnu tar because of it's multi-tape benefits
   over regular tar.  The -M feature works fine when executed from the
   basic command prompt but not when executed within a script.

   The prompt for an additional tape would appear but the process would
   never wait for the prompt to be answered.

How exactly is the script invoking tar?

For GNU tar 1.13.18 <ftp://alpha.gnu.org/gnu/tar/tar-1.13.18.tar.gz>,
tar reads from /dev/tty if the archive is "-", and from standard input
otherwise.  Does this explain your problem?