postinst is in juju-2.0 2.0.2-0ubuntu0.16.04.2.
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 | #!/bin/sh
# postinst script for juju-2.0
set -e
case $DPKG_MAINTSCRIPT_ARCH in
amd64|arm64|ppc64el|s390x)
case "$1" in
configure)
if [ -x /etc/init.d/procps ]; then
invoke-rc.d procps restart || true
fi
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
;;
esac
exit 0
##
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