Where is the file permission set for the TTY's as each user opens one? My
users can't write to each other's terminals.
Any clues would be most appreciated.
Jason Chodakowski
by Jason Chodakowsk » Mon, 26 Aug 1996 04:00:00
Where is the file permission set for the TTY's as each user opens one? My
users can't write to each other's terminals.
Any clues would be most appreciated.
Jason Chodakowski
by Ray Wald » Mon, 26 Aug 1996 04:00:00
If you're using getty, there is a getty.def file (or something likeQuote:>Where is the file permission set for the TTY's as each user opens one? My
>users can't write to each other's terminals.
>Any clues would be most appreciated.
>Jason Chodakowski
by Frank Wijna » Sat, 31 Aug 1996 04:00:00
>Any clues would be most appreciated.
The only thing you have to do is to make the write program set group id and
of the group tty. Then they can write to each others terminals.
(And the users can turn it on and off by changing pemissions, easily done with
mesg )
Greetings Frank
1. "weof" operation in "mt" command gives "permission denied"
Hi,
Some time ago I made a mistake and deleted my /dev directory. Since
then, I have had to occasionally run the "mknod" command to create a
device here and there. I did have a directory list of /dev, and I have
used that as a guide for which major and minor node numbers to use, and
which type of file to create.
Anyway, my Exabyte 8200 is /dev/nrst0, which is listed as:
crw-rw-rw- 1 root wheel 9, 128 Oct 29 09:30 /dev/nrst0
I am trying to write 2 eof marks after the end of file 0, so that I can
re-write file 1. The sequence that I use for this on the the same tape
at work (and this works just fine) is:
1) mt -f /dev/nrst0 asf 1 position after the first eof (after file 0)
2) mt -f /dev/nrst0 bsf 1 position before the first eof
3) mt -f /dev/nrst0 weof 2 make it look like file 0 is only file on tape
4) mt -f /dev/nrst0 bsf 1 position after the first eof
When I try this with linux, the weof command (step 3) results in:
mt: /dev/nrst0: Permission denied
Is this a problem with the driver, or is there something wrong with my
device definition. According to the man page, I should be able to do
this under Linux pretty much the same as it works under SunOS.
There is no problem writing to the tape otherwise.
I have Slackware 2.x.
thanks,
tw
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