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000198_news@columbia.edu _Sat Apr 15 15:06:53 2000.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Subject: Re: FTP Resume
Date: 15 Apr 2000 18:49:44 GMT
Organization: Columbia University
Message-ID: <8dadk8$ppc$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <8d8u61$ph0$1@velveeta.cs.utexas.edu>,
Logan Shaw <logan@cs.utexas.edu> wrote:
: In article <8d8skp$5a8$1@nnrp1.deja.com>, Fuad <fuad@bitsmart.com> wrote:
: >is there any way to resume a transfer in case of link droppage from where
: >it terminated . I am using solaris 7. Any third partry software on thsi
: >would also be appreciated .
:
: If your goal is to just download from some public ftp archive or web
: site, you can use "wget" (available from ftp://ftp.gnu.org/pub/gnu/ ).
: Actually, I'm not 100% sure it supports resuming from ftp servers, but
: I know it does from web servers.
:
: If, on the other hand, you're trying to use ftp to upload something or
: to do stuff that isn't anonymous, you might want to look elsewhere,
: because wget's strength is in *getting* files (hence the name) from
: public places. (I think it does support passwords, but not in a
: great way.)
:
Yes, it would be nice if all FTP's supported resumption of broken transfers.
It would also be nice if they supported PUTs as well as GETs, login as well
as anonymous, and for that matter secure authentication and even secure data
transfer. And penetration of firewalls and NATs. And also GET/PUT of file
groups as well as single files (this seems to be a concept that was lost
when FTP was moved into Web browsers). And how about file groups containing
a mixture of text and binary files, across platforms (e.g. UNIX, Windows,
VMS) without corruption -- including translation of text-file character
sets. And for that matter, flexible file selection mechanisms (date, size,
exception lists, ...), non-clobbering of existing files (unless you want
to), update mode (transfer only those files that changed since last time),
preservation of timestamps and permissions, atomic file movement, recursion
through directory trees, ...
You can actually do all this now, but not with FTP. To see how, visit:
http://www.columbia.edu/kermit/cuiksd.html
Of course you won't find this service everywhere, but there's no reason it
can't be installed on every UNIX-based server that also offers FTP service.
For more info, see:
http://www.columbia.edu/kermit/iksd.html
http://www.columbia.edu/kermit/case19.html
- Frank