
hashfile
   hashes lines of files and has lots of options to compare
   different hash functions. See hashfile -h

let
   evaluates arithmetic expressions involving arithmetic operators
      ** * + - / // %
      - (unary)
   bitwise operators
      | & ^
      ~ (unary)
   boolean operators
      || && == !=
      ! (unary)
   the ternary "a ? b : c" expression, and the standard C math functions.

match
   tries to find literal pattern in a file stream. Use '-' for stdin.

