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- From: ian@airs.com (Ian Lance Taylor)
- Newsgroups: comp.mail.uucp
- Subject: Re: multi-hop uucp implies -C?
- Message-ID: <6071@comton.airs.com>
- Date: 7 Jan 93 01:48:29 GMT
- References: <1993Jan6.012324.18823@allegra.att.com>
- Organization: Infinity Development, Waltham, MA
- Lines: 38
-
- mp@allegra.att.com (Mark Plotnick) writes:
-
- >Under SunOS 4.1.1, "uucp x host1!host2!y" generates a command that
- >starts with "uux -C". Is the "-C" really necessary? We have a user
- >here who tried to send out 100 copies of a 6MB file via multi-hop uucp,
- >and our disks didn't have anywhere near 600MB of space. Would it be OK
- >if uucp gave uux the -C option only if uucp was itself given the -C
- >option?
-
- If you mean that uucp did an exec of "uux -C", then the -C was
- certainly not necessary (although on some systems uucp does a -C by
- default, so passing -C to uux by default would be correct; I don't
- know about SunOS).
-
- However, if you mean that the above uucp command somehow requested a
- remote execution of ``uux -C'' on host1, then the -C is definitely
- necessary. If uux on host1 was invoked without -C, then the file
- would have to exist somewhere for uux to copy it. But if that were
- the case, who would delete it?
-
- >P.S. has there been any work toward implementing a sort of
- >multicasting, in which a single uucp command line can specify that a
- >file should be copied to multiple destinations? In the above case,
- >virtually all the 100 copies were being sent to the same "host1", and it
- >would be a win to just send the 6MB once and then have host1 execute a
- >uucp command to send to the 100 destinations.
-
- This would be fairly straightforward. You could make
- uucp file --to host1!host3!file1 --to host1!host2!file2
- execute the following on host1
- uucp -C file --to host3!file1 --to host2!file2
- Of course, the uucp running on host1 would have to recognize the --to
- flag.
- --
- Ian Taylor | ian@airs.com | First to identify quote wins free e-mail message:
- `` `The world can grow into an ordered place where all are equal before
- the law. And the law is just. Honest. Without graft.'
- `Is that so important if you are starving?' ''
-