first commit

etc_org/kernel/postrm.d/initramfs-tools

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+#!/bin/sh -e
+
+version="$1"
+bootopt=""
+
+[ -x /usr/sbin/update-initramfs ] || exit 0
+
+# passing the kernel version is required
+if [ -z "${version}" ]; then
+	echo >&2 "W: initramfs-tools: ${DPKG_MAINTSCRIPT_PACKAGE:-kernel package} did not pass a version number"
+	exit 0
+fi
+
+# exit if custom kernel does not need an initramfs
+if [ "$INITRD" = 'No' ]; then
+	exit 0
+fi
+
+# absolute file name of kernel image may be passed as a second argument;
+# create the initrd in the same directory
+if [ -n "$2" ]; then
+	bootdir=$(dirname "$2")
+	bootopt="-b ${bootdir}"
+fi
+
+# avoid running multiple times
+if [ -n "$DEB_MAINT_PARAMS" ]; then
+	eval set -- "$DEB_MAINT_PARAMS"
+	if [ -z "$1" ] || [ "$1" != "remove" ]; then
+		exit 0
+	fi
+fi
+
+# delete initramfs
+INITRAMFS_TOOLS_KERNEL_HOOK=1 update-initramfs -d -t -k "${version}" ${bootopt} >&2