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Reply-To:	<fergus AT bonhard DOT uklinux DOT net>
From:	<fergus AT bonhard DOT uklinux DOT net>
To:	<cygwin AT cygwin DOT com>
Cc:	<fergus AT bonhard DOT uklinux DOT net>
Subject:	How to check your local mirror
Date:	Fri, 3 Sep 2004 08:05:56 +0100
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If you want to check the integrity of your local mirror you might find the
attached script useful (as it stands, or as the basis for something you
write yourself).

The syntax is
	chk.us mydir
where mydir might be /f/Cyg0 or /cygdrive/c/cygmirror or wherever it is you
keep the file setup.ini and the directory release/. Note that mydir does not
need a closing slash mydir/ but the script will still work if you include
it. The mirror that is used for the comparison is ftp://mirrors.rcn.net but
you can alter this if you want to.

There are 3 parts to what the script does:

1. checks the timestamp on your local setup.ini with the one currently on
the mirror;
2. checks that the files you've got match the ones you should have (this
just checks the names);
3. checks the md5sum's.

The script ends by deleting the temporary listings created in order to make
the comparisons. If you keep them instead, and compare tmpf.setup.chk.us.1
with ..3, you'll see a list of the redundant files on your local mirror: you
could delete these. Or even pipe the list for automatic deletion, I guess.

Fergus

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#! /bin/sh

echo Saved setup.ini is dated ...
grep "setup-timestamp" $1/setup.ini
wget -q ftp://mirrors.rcn.net/pub/sourceware/cygwin/setup.ini
echo Downloaded setup.ini is dated ...
mv setup.ini setup.chk.us.ini
grep "setup-timestamp" setup.chk.us.ini

cat setup.chk.us.ini | sed -n '/release\//p' | sed 's/^.*release\///g' > tm=
pf.setup.chk.us.0
cat tmpf.setup.chk.us.0 | sed 's/\( [a-f0-9]*\)*$//g' | sort | uniq > tmpf.=
setup.chk.us.1
cat tmpf.setup.chk.us.0 | sed 's/^\(.*\) \([a-f0-9]*\) \([a-f0-9]*\)$/\1 \3=
/g' | sort | uniq > tmpf.setup.chk.us.2

echo Check resource ...
find $1/release/ -type f | sed -e 's/^.*release\///g' | sort > tmpf.setup.c=
hk.us.3
diff tmpf.setup.chk.us.1 tmpf.setup.chk.us.3 | grep "<"

echo Check md5sum-s ...
sed -e 's/^/\/f\/Cyg0\/release\//g' tmpf.setup.chk.us.1 | xargs md5sum | se=
d -e 's/\*\/f\/Cyg0\/release\///g' -e 's/^\(.*\) \(.*\)$/\2 \1/g' | sort > =
tmpf.setup.chk.us.4
diff tmpf.setup.chk.us.2 tmpf.setup.chk.us.4 | grep "<"

rm setup.chk.us.ini
rm tmpf.setup.chk.us.*



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