postrm is in linux-modules-4.15.0-1018-azure 4.15.0-1018.18~16.04.1.
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 | #!/bin/sh
set -e
version=4.15.0-1018-azure
image_path=/boot/vmlinuz-$version
if [ "$1" != remove ]; then
exit 0
fi
depmod -a -F /boot/System.map-$version $version 2>/dev/null || true
#
# We should be rebuilding the initramfs here on removal to pare down the
# initramfs if it contains any of the objects we just removed. But people
# commonly remove kernels in order to free space in /boot, and rebuilding the
# initramfs now risks ENOSPC when we are trying to make space. The files we
# leave lying about could be confusing, but we trade that against safety on
# removal.
#
#if [ -d /etc/kernel/postinst.d ]; then
# # We want to behave as if linux-image (without us) was installed, therefore
# # we do not want the postinst support to know we are being removed, claim
# # this is an installation event.
# mkdir -p /usr/lib/linux/triggers
# cat - >/usr/lib/linux/triggers/$version <<EOF
#DEB_MAINT_PARAMS="configure" run-parts --report --exit-on-error --arg=$version \
# --arg="$image_path" /etc/kernel/postinst.d
#EOF
# dpkg-trigger --no-await linux-update-$version
#fi
exit 0
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