Command:   cksum - display file checksum and size
Syntax:    cksum [file ...]
Flags:     (none)
Examples:  cksum                    # Display CRC and size of stdin
           cksum *.c                # Display CRC and size of .c files

     Cksum calculates and writes to standard output the 32-bits  CRC  of
the  input  files,  or  of stdin if no files were specified. The size in
bytes of each file will be displayed after a space.  The  name  of  each
file will be displayed after another space.