Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/venti-printarenas/dumpvacroots

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
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#!/bin/rc

# this dumps all the vac scores ever stored to the venti server
# if nothing else, this illustrates that you have to control access
# to the physical disks storing the archive!

ventihttp=`{echo $venti | sed 's/^[a-z]+!([0-9\.]+)![a-z0-9]+$/\1/; s/^[a-z]+!([0-9\.]+)/\1/; s/$/:8000/'}

hget http://$ventihttp/index | 
awk '
 /^index=/ { blockSize=0+substr($3, 11); }
 /^arena=/ { arena=substr($1, 7); }
 /^	arena=/ { start=0+substr($5, 2)-blockSize; printf("venti/printarena -o %d %s\n", start, $3); }' |
rc |
sed -n 's/^(.*) 1$/vac:\1/p'

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