Added od cheatsheet

cheatsheets/od

@@ -0,0 +1,11 @@
+# Dump file in octal format
+od /path/to/binaryfile
+od -o /path/to/binaryfile
+od -t o2 /path/to/binaryfile
+
+# Dump file in hexadecimal format
+od -x /path/to/binaryfile
+od -t x2 /path/to/binaryfile
+
+# Dump file in hexadecimal format, with hexadecimal offsets and a space between each byte
+od -A x -t x1 /path/to/binaryfile