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#!/bin/sh
#
# This script produces a report like this:
#
# Combined size of ports: 510.5 Mb
# The Top 20 ports by size account for 15.14% of the collection
# ====================================================================
# [snipped 15 rows]
# 0.37% 1.87Mb security/cracklib
# 0.66% 3.38Mb security/vuxml
# 0.87% 4.42Mb print/texlive-texmf
# 2.82% 14.41Mb java/openjdk7
# 6.79% 34.66Mb java/openjdk8
# ====================================================================
# 15.14% 77.29Mb
#
# Written by John Marino <marino@FreeBSD.org> one rainy day just because ...
#
TOP=20
DUK="du -kd 1 -t 200k [a-z]*"
DASH="======================================================================="
SCRATCH=/tmp/topX
AWKCMD1='BEGIN { FS="/"; }{ if (NF == 2) { print $0; }}'
AWKCMD2='BEGIN { total=0; } { total = total + $1 } END { print total }'
AWKCMD3='{ pc=100.0*$1/total; mega=$1/1024.0; \
printf("%5.2f%% %5.2fMb %s\n", pc, mega, $2)}'
cd /usr/ports && ${DUK} | awk "${AWKCMD1}" | sort -n | tail -n ${TOP} \
> ${SCRATCH}
total=$(du -sk /usr/ports/[a-z]* | awk "${AWKCMD2}")
outlaws=$(awk "${AWKCMD2}" ${SCRATCH})
megabytes=$(bc -e "scale = 2; ${total} / 1024" -e quit)
bloat=$(bc -e "scale = 2; ${outlaws} / 1024" -e quit)
PC=$(bc -e "scale = 2; 100 * ${outlaws} / ${total}" -e quit)
printf "Combined size of ports: %1.1f Mb\n" ${megabytes}
printf "The Top %d ports by size account for %1.2f%% of the collection\n" \
${TOP} ${PC}
echo ${DASH}
awk -v total=${total} "${AWKCMD3}" ${SCRATCH}
echo ${DASH}
printf "%5.2f%% %5.2fMb\n" ${PC} ${bloat}
rm ${SCRATCH}
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