HEXDUMP(3)             FreeBSD Library Functions Manual             HEXDUMP(3)

NAME
     hexdump - dump a block of bytes to standard out in hexadecimal form

SYNOPSIS
     #include <libutil.h>

     void
     hexdump(void *ptr, int length, const char *hdr, int flags);

DESCRIPTION
     The hexdump() function prints an array of bytes to standard out in
     hexadecimal form, along with the ASCII representation of the bytes, if
     possible.  By default, each line of output will start with an offset
     count, followed by 16 hexadecimal values, followed by 16 ASCII
     characters.

     ptr     Pointer to the array of bytes to print.  It does not need to be
             NUL-terminated.

     length  Number of bytes to print.

     hdr     Pointer to a NUL-terminated character string that will be
             prepended to each line of output.  A value of NULL implies that
             no header will be printed.

     flags   Flags for controlling the formatting of the output.

             Bits 0-7           Integer value of the number of bytes to
                                display on each line.  A value of 0 implies
                                that the default value of 16 will be used.

             Bits 8-15          Character ASCII value to use as the separator
                                for the hexadecimal output.  A value of 0
                                implies that the default value of 32 (ASCII
                                space) will be used.

             HD_OMIT_COUNT      Do not print the offset column at the
                                beginning of each line.

             HD_OMIT_HEX        Do not print the hexadecimal values on each
                                line.

             HD_OMIT_CHARS      Do not print the character values on each
                                line.

SEE ALSO
     ascii(7), sbuf_hexdump(9)

HISTORY
     The hexdump() function first appeared in FreeBSD 6.4.

AUTHORS
     This manual page was written by Scott Long.

FreeBSD 13.1-RELEASE-p6           May 8, 2020          FreeBSD 13.1-RELEASE-p6