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- Newsgroups: comp.unix.sysv386
- Path: sparky!uunet!grebyn!daily!richk
- From: richk@grebyn.com (Richard Krehbiel)
- Subject: ISC 3.0: spawning a VPIX, problems...
- Message-ID: <1992Sep15.144507.27164@grebyn.com>
- Organization: Grebyn Timesharing
- Distribution: usa
- Date: Tue, 15 Sep 1992 14:45:07 GMT
- Lines: 23
-
-
- I've been helping an associate of mine with a utility that runs under
- Interactive Unix 3.0, which must spawn a DOS utility to do part of the
- work. This DOS utility has no need for user interaction, it's purely
- batch. It must run periodically in the background, to check for
- events in the Netware system, which is mounted via NFS. It's not
- feasible to replace this DOS utility with a Unix one.
-
- The problem is that VPIX seems to require some sort of keyboard
- device, and it's very particular. When spawned with stdin and stdout
- to a pipe or pty, it prints a message like "Unable to set keyboard
- mode, exiting". Yet I know VPIX can use a pty somehow, since it works
- okay in an xpcterm, and across an rlogin. What's the secret here?
-
- We're currently working around by opening an unused vt, which vpix is
- happy with. Yet nothing we try prevents the output from this vpix
- session from coming up on the screen. It seems like a bug in the vt
- device, since it doesn't switch screens, and vpix is definitely
- writing to a different vt device than the frontmost, yet vpix output
- is written to the current screen.
- --
- Richard Krehbiel richk@grebyn.com
- OS/2 2.0 will do for me until AmigaDOS for the 386 comes along...
-