postinst is in dbconfig-common 2.0.4ubuntu1.
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 | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
# get some of our helper functions
. /usr/share/dbconfig-common/dpkg/common
dbc_config dbconfig-common "$@"
db_get dbconfig-common/remember-admin-pass
dbc_remember_admin_pass="$RET"
db_get dbconfig-common/remote-questions-default
dbc_remote_questions_default="$RET"
dbc_write_global_config
# Previously dumped databases in /var/cache/dbconfig-common/backups may
# (depending on the local umask) be readable by everybody (bts: #805638). Limit
# the permissions here on all files in that folder, but only if we are for the
# first time upgrading to a fixed version:
# sid: 2.0.0
# jessie: 1.8.47+nmu3+deb8u1
# wheezy: 1.8.47+nmu1+deb7u1
# squeeze: 1.8.46+squeeze.1
if dpkg --compare-versions "$2" lt "2.0.0" && \
dpkg --compare-versions "$2" gt "1.8.47+nmu3+deb9u1~" ; then
if [ -d /var/cache/dbconfig-common/backups/ ] ; then
find /var/cache/dbconfig-common/backups/ -type f -exec chmod 600 {} \;
fi
fi
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