od -tx1 old.bin
0000000 c8 00 00 00 55 01 00 00 dc 05 00 00 68 06 00 00
0000020
echo " c8 00 00 00 55 01 00 00 dc 05 00 00 68 06 00 00" | awk '{ gsub(" ","s*"); print $0}'
s*c8s*00s*00s*00s*55s*01s*00s*00s*dcs*05s*00s*00s*68s*06s*00s*00
od -An -v -tx1 old.bin | sed -e 's/^s*c8s*00s*00s*00s*55s*01s*00s*00s*dcs*05s*00s*00s*68s*06s*00s*00/c8 00 00 00 55 01 00 00 dc 05 00 00 68 06 00 00 af/g' | xxd -r -ps - new.bin
od -tx1 new.bin
0000000 c8 00 00 00 55 01 00 00 dc 05 00 00 68 06 00 00
0000020 af
0000021
od -tx1 old.bin
0000000 00 00 00 00 00 00 00 00 e8 03 00 00 74 03 00 00
0000020 62 01
0000022
echo "123456789123456" > tmp.bin && od -An -tx1 tmp.bin | awk '{ gsub(" ","s*"); print $0}'
s*31s*32s*33s*34s*35s*36s*37s*38s*39s*31s*32s*33s*34s*35s*36s*0a
od -An -v -tx1 tmp.bin | sed -e 's/^s*31s*32s*33s*34s*35s*36s*37s*38s*39s*31s*32s*33s*34s*35s*36s*0a/00 00 00 00 00 00 00 00 e8 03 00 00 74 03 00 00 47/g' | xxd -r -ps - new.bin
od -tx1 new.bin
0000000 00 00 00 00 00 00 00 00 e8 03 00 00 74 03 00 00
0000020 47
0000021
