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From: shadow@pawl.rpi.edu (Deven T. Corzine)
Newsgroups: comp.sys.amiga
Subject: Re: Fred Fish, PD programs
Message-ID: <146@rpi.edu>
Date: 15 Jan 89 12:06:29 GMT
References: <6540@louie.udel.EDU> <14892@cisunx.UUCP> <1624@cveg.uucp>
Sender: usenet@rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY
Lines: 34

In article <1624@cveg.uucp> gmg@hcx.uucp (Greg M. Garner) writes:
[...]
>I wanted to ad a line that helps me a great deal, as I get tired of
>watching a ftp screen that sits there with nothing happening for 
>long periods of time. The hash command will change it so that 
>the system prints a hash mark (#) every 1k of transfered data, so that 
>you know how the system is progressing on that transfer. I usually
>type the hash command right after setting the mode to binary.
>
>  Greg Garner
>  501-442-4847
>  gmg@hcx.uucp   USENET: ...!uunet!harris.cis.ksu.edu!hcx!gmg


Actually, I've noticed that on every Unix system I've used ftp on, the
number of hash marks is never quite the same, even for the same file.
And the number of hash marks is always at least as many as there
should be, but usually more.  For example, transferring an 80K file,
you might get 93 hash marks one time, and 107 another. My
interpretation of why this happens is that in the code, it does a
read(fd,buf,1024) to read 1K, printing a hash mark for that 1K, but
not taking into account (as far as printing hash marks goes) that the
read call may return less than 1024 bytes read. So you end up with
extra reads, and therefore an inappropriate number of hash marks
printed. I believe it has the same problem with writes, also. (Haven't
watched carefully; I usually do "ftp" get commands so the umask value
will take effect.) JTYMLTK.

Deven

------- shadow@pawl.rpi.edu --- Deven Thomas Corzine -------------------------
Cogito  shadow@acm.rpi.edu      2346 15th Street        Pi-Rho America
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sum...     In the immortal words of Socrates...  "I drank what?"   ...I think.