also sprach Matthias Urlichs <smurf@smurf.noris.de> [2004.10.22.2011 +0200]:
> >> exec wget -O - $MIRROR/$RPATH | tee $LPATH
> >
> Don't forget
> mkdir -p "$(dirname "$LPATH")"
Why the extra two processes?
mkdir -p ${LPATH%/*}
> The above pipe needs either bash 3 or a subshell, if you want to
> be able to catch any errors wget might die from.
Yes, errors are not easy to handle in shell. That's why this
should be done with Perl/Python, or at least curl.
> One more problem -- what happens if client #2 wants the file while
> the wget is still in progress?
Couldn't you somehow tell apache to not read the premature EOF? The
second client could read the file and the connection would just
block until more data becomes available.
> NB: What to do about no-cache pragmas?
Serve the file but don't store it? Just leave out the tee(1) call in
the above.
> This rapidly turns from a plain 404 error script into a somewhat
> nontrivial Perl-or-Python-or-whatever doument handler.
It's still rather simple. I will have to think about the premature
EOF. I am sure there is a way to do it.
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