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- Newsgroups: comp.sys.next.misc
- Path: sparky!uunet!wupost!csus.edu!netcom.com!netcomsv!yamanote!gordie
- From: gordie@cyclesoft.com (Gordie Freedman)
- Subject: Re: how to read a (ie: 'tar') floppy?!?
- Message-ID: <1993Jan6.060123.3560@netcom.com>
- Sender: gordie@netcom.com
- Reply-To: gordie@cyclesoft.com
- Organization: Dolphin Software
- References: <1id1irINNmr8@anthrax.solbourne.com>
- Date: Wed, 6 Jan 1993 06:01:23 GMT
- Lines: 66
-
- In article <1id1irINNmr8@anthrax.solbourne.com> hanzel@solbourne.com (Karl
- Hanzel) writes:
- > Ok, i give up...
- >
- > What's the secret to being able to stuff (just for example) a 'tar' floppy
- > into a NeXT's drive and then to read it? The scenario is this: i'm here
- > pax,
- > Karl
- > *----->
- >
- > (NeXT Mail to karl@khaos.com, thanks!)
- >
-
- Note: This answer, or a better one should probably go into the FAQ, this
- question (and other related ones, such as "my floppy is stuck I can't eject
- it") is asked a lot.
-
- When you use the tar command from the shell, specify /dev/rfd0b (for example to
- read the table of contents on a floppy: "tar tf /dev/rfd0b"). The man page on
- tar goes into more detail about the specifics. Don't insert the floppy, just
- type your tar command, and NeXTSTEP will politely ask you to insert the disk.
-
- Now, you need to set the permissions on /dev/rfd0b to rw for whoever is using
- it. To do everyone (note /dev/rfd0b is owned by root):
-
- % chmod 666 /dev/rfd0b
- % ls -alsx /dev/rfd0b
- 0 crw-rw-rw- 1 root 41, 1 Nov 4 10:23 /dev/rfd0b
- %
-
- If you don't want to set the permissions, you have to run tar as root.
-
- To eject the disk, there is a command somewhere, sorry I can't remember what it
- is. However, a bit of hacking will get it ejected for you (see man page on fd
- et al for more info).
-
- Here's a program, name the source eject.m and do what the comments say.
-
- -------------cut for eject.m-----------------
- #include <stdio.h>
- #include <sys/file.h>
- #include <bsd/dev/disk.h>
- #include <bsd/dev/fd_extern.h>
-
- // save this file as eject.m
- // % make eject # Make a binary (no makefile required)
- // % strip ./eject # Shrink the binary
- // % ./eject # to eject the disk
- // As long as /dev/rfd0b is crw-rw-rw- this will work, else
- // run this program as root.
-
- void
- main (int argc, char** argv)
- {
- int fd = open ("/dev/rfd0b", O_RDONLY, 0);
- ioctl (fd, DKIOCEJECT);
- close (fd);
- exit (0);
- }
-
- -----------------end eject.m-------------
- --
-
- --- Gordie Freedman gordie@cyclesoft.com NeXTMail Yes! ---
- >>> Thou shalt not inline functions more complicated than 20
-
-