diff --git a/dist/tools/doccheck/create_pattern.sh b/dist/tools/doccheck/create_pattern.sh
new file mode 100755
index 0000000000..8da929fb1d
--- /dev/null
+++ b/dist/tools/doccheck/create_pattern.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+# This sed script converts doxygen error messages to line number agnostic regex
+# patterns as used by doccheck/check.sh
+#
+# Example:
+#
+#     dist/tools/doccheck/check.sh \
+#         | grep boards/nucleo-g071rb/include/periph_conf.h \
+#         | dist/tools/doccheck/create_pattern.sh >> dist/tools/doccheck/exclude_patterns
+#
+# This would add all remaining warnings of nucleo-g071rb's periph_conf.h to the
+# exclude_patterns.
+#
+
+sed -E -e "s#^(.*:)([0-9]+): #\1DIGITS_MAGIC: #" \
+        -e 's/[]\\.$*{}|+?()[^-]/\\&/g' \
+        -e 's/:DIGITS_MAGIC:/:[0-9]+:/'