caesar

CAESAR(6)                        Games Manual                        CAESAR(6)



NAME
       caesar - decrypt caesar cyphers

SYNOPSIS
       caesar [ rotation ]

DESCRIPTION
       The caesar utility attempts to decrypt caesar cyphers using English
       letter frequency statistics.  Caesar reads from the standard input and
       writes to the standard output.

       The optional numerical argument rotation may be used to specify a
       specific rotation value.

       The frequency (from most common to least) of English letters is as
       follows:

              ETAONRISHDLFCMUGPYWBVKXJQZ

       Their frequencies as a percentage are as follows:

              E(13), T(10.5), A(8.1), O(7.9), N(7.1), R(6.8), I(6.3), S(6.1),
              H(5.2), D(3.8), L(3.4), F(2.9), C(2.7), M(2.5), U(2.4), G(2),
              P(1.9), Y(1.9), W(1.5), B(1.4), V(.9), K(.4), X(.15), J(.13),
              Q(.11), Z(.07).

       Rotated postings to USENET and some of the databases used by the
       fortune(6) program are rotated by 13 characters.



4.4 Berkeley Distribution      November 11, 1990                     CAESAR(6)