Please forgive my ignorance; I've got an AIX/Solaris/Linux background,
with very little *BSD experience in my career somehow. So I come here
with full respect for *BSD, but acknowledging my lack of experience.
I'm quite sure that this is a stupid question....
The reason I ask, is that I'm going to have to do something along these
lines, this weekend, on hardware I have never seen, and of which I do
not have any spec other than that it's an IBM NetFinity 5000. I'm
therefore a bit nervous about turning up with a NetBSD-based CD, only to
find that the NIC isn't supported, or something. So I've been looking at
what the script does to give me some chance of a Knoppix-or-similar
solution doing the same good job if it turns out that there's some weird
NIC installed, or something.
So I've had a look at the script, to see what I'd need to do to get the
same thing under Linux, just in case I need to quickly switch OSes
because of some random hardware config.
The uploadpart script calls dd like this:
# dd if=/dev/r${diskpart} ibs=1m | progress sh ftpput $tmpfile ${gzip_opt}
or to summarise for the sake of word-wrap and simplicity:
# dd if=/dev/foo | progress sh ftpput
whereby ftpput chucks stdin as a file to an FTP server (quite cleverly,
if I may say so.)
Here comes the "this is stupid, I'm going to regret this..." bit:
What does "progress" do? I can't find a source for it in the src
tarball. I can see that it's going to take stdin and chuck it out to,
presumably, ftpput.
So far as I can tell, removing the "progress sh" seems to work fine
under GNU/Linux. Naturally, I get no status on the progress, which I
guess is what the progress script provides? Frustratingly, I can't get
hold of sufficient space to grab an existing partition and dump it
somewhere to test :-/
So can I conclude that the action of "progress sh ftpput $tmpfile
${gzip_out}" is to exec ftpput via sh, with ftpput getting the arguments
"$tmpfile" and "${gzip_out}", whilst (presumably) giving some kind of
progress report "1Mb... 2Mb... 3Mb ... etc" to (presumably) stderr,
piping the stdin into the child (ftpput)?
I'm sure it's very simple code, but I'm tripping over myself, not having
written any C for years :(
Does anybody have the source for "progress"?
Cheers,
Steve.
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