prerm is in libpython3.4-minimal 3.4.3-1ubuntu1~14.04.7.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | #! /bin/sh
set -e
remove_bytecode()
{
pkg=$1
max=$(LANG=C LC_ALL=C xargs --show-limits < /dev/null 2>&1 | awk '/Maximum/ {print int($NF / 4)}')
dpkg -L $pkg \
| awk -F/ 'BEGIN {OFS="/"} /\.py$/ {$NF=sprintf("__pycache__/%s.*.py[co]", substr($NF,1,length($NF)-3)); print}' \
| xargs --max-chars="$max" echo \
| while read files; do rm -f $files; done
find /usr/lib/python3 /usr/lib/python3.4 \
\( -name dist-packages -prune \) -o \
\( -name __pycache__ -type d -empty -print \) \
| xargs -r rm -rf
}
case "$1" in
remove)
pc=$(dpkg-query -f '${db:Status-Abbrev} ${binary:Package}\n' -W libpython3.4-minimal \
| grep -v '^.n' | wc -l)
if [ "$pc" -le 1 ]; then
remove_bytecode libpython3.4-minimal:amd64
fi
;;
upgrade)
remove_bytecode libpython3.4-minimal:amd64
# byte compilation in python3.4-minimal postinst, strict dependency
;;
deconfigure)
;;
failed-upgrade)
;;
*)
echo "prerm called with unknown argument \`$1'" >&2
exit 1
;;
esac
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