Base 16

1 min read · data

Base 16 numbers often use 0x at the start, so '10' just means '10', but 0x10 means '10 in base 16' which means '16'.

For small numbers, use printf.

1printf "%x" $NUMBER

For any number, use bc.

1fortune | md5sum  | cut -d' ' -f1 | tr [:lower:] [:upper:] | bc
  • Inputting base 16 uses ibase=16.
  • Outputting base 10 uses ibase=10
1echo 'ibase=16;' $(echo cbb478ac825f0dce7671254be035d0bc | tr [:lower:] [:upper:]) | bc