ontape

Hello , Working on a Digital Alpha runningWindows NT 4.0 sp 3 , we use ontape -s -L 0 to backup our Informix 7.23TC1 database. I want to use a "at" command to schedule the backup. The problem I have is that the ontape needs a <newline> at the command line after asking for the tape. Someone told me that I should use the following command : ontape -s -L 0 < enter.txtwhere enter.txt is a file containing a <new line> character, but this doesn't work ( still waiting after asking for the tape ) Please help