add binary-grep.sh

Author: milahu

bash/binary-grep.sh

@@ -0,0 +1,21 @@
+#! /bin/sh
+# binary-grep.sh
+# find offset of one small binary file
+# inside another large binary file
+# license: public domain
+# https://unix.stackexchange.com/questions/39728
+
+if [ $# != 2 ]; then
+  echo "usage: $0 needle.bin haystack.bin" >&2
+  exit 1
+fi
+
+needle="$1"
+haystack="$2"
+
+# the order of the files $haystack and $needle
+# matters for performance
+
+xdelta3 -e -s "$haystack" "$needle" /dev/stdout |
+xdelta3 printhdrs /dev/stdin |
+grep "VCDIFF copy window offset" | cut -c 31-