hextool
hex <-> bin

=== Hex format ===
/* This is 
   multi line 
   comment */
// And this is one line comment

\C\h\a\r\a\c\t\e\r\ \w\i\t\h\ \b\a\c\k\s\l\a\s\h
/* will be output literally -> "Character with backslash" */

Two hex char convert to binary

=== Sample Usage ===
$ echo "DEADBEAF 00 00 00 00 \D\E\A\D\B\E\A\F" | hex2bin  | bin2hex 
/* 0000 */ de ad be af 00 00 00 00  44 45 41 44 42 45 41 46 // ........DEADBEAF
/* 0010 */