Transform a hex info to binary using linux command
Edit hex content to make it without spaces between each hex code,
53 61 6c 74 65 64 5f 5f 1b 73 a1 62 4f 15 be f6
3c 30 cc 46 ee 10 13 11 84 bf 4a 77 21 a4 84 99
0e 5d ef 11 18 3a 60 43 a0 4c 4b 1e c8 86 e6 6c
xxd -r -p input.txt output.bin