1 files changed, 25 insertions, 0 deletions
diff --git a/debian/diff-latest-pack.sh b/debian/diff-latest-pack.sh
new file mode 100755
index 0000000..613aa95
--- /dev/null
+++ b/debian/diff-latest-pack.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Generate an unified diff of the list of microcodes included in the
+# latest two Intel-supplied Microcode packs (microcode-<date>.dat)
+#
+# Use this to locate updated/removed/added microcodes.  Further manual
+# analysis is necessary to identify the deletion of recently-added
+# or recently-updated microcode, and the addition of previously-deleted
+# microcode (often with a version downgrade).
+#
+# Run this from the directory with the Intel microcode packs.
+
+export LC_COLLATE=C
+PATH=${PATH}:/sbin:/usr/sbin
+
+FILES=$(ls -1 microcode-*.dat | tail -n 2 | xargs)
+
+DFILES=
+for i in $FILES ; do
+	fn=$(basename $i)
+	iucode_tool -q -l $i | sed -e 's/^[^:]\+: //' | sort | grep sig > /tmp/$fn.list
+	DFILES="${DFILES} /tmp/$fn.list"
+done
+
+diff --unified=1 ${DFILES} | grep sig | sort -k 2