.Dd September 7, 2018 .Dt XX 1 .Os . .Sh NAME .Nm xx .Nd hexdump . .Sh SYNOPSIS .Nm .Op Fl arsz .Op Fl c Ar cols .Op Fl g Ar group .Op Fl p Ar count .Op Ar file . .Sh DESCRIPTION .Nm dumps the contents of a .Ar file or standard input in hexadecimal format. . .Pp The arguments are as follows: .Bl -tag -width Ds .It Fl a Toggle ASCII output. . .It Fl c Ar cols Output .Ar cols bytes per line. The default .Ar cols is 16. . .It Fl g Ar group Output extra space after every .Ar group bytes. The default .Ar group is 8. . .It Fl p Ar count Output a blank line after every .Ar count bytes. .Ar count must be a multiple of .Ar cols . . .It Fl r Reverse hexdump. Read hexadecimal input and write byte output. . .It Fl s Toggle offset output. . .It Fl z Skip output of lines containing only zeros. .El . .Sh SEE ALSO .Xr hexdump 1 , .Xr xxd 1