Functionality (man page)

cn(1)                     BSD General Commands Manual                    cn(1)NAME     cn -- Command line interface to CommonNumerics routines.SYNOPSIS     cn [-p prompt] [command] [command_options] [command_args]DESCRIPTION     A simple command line utility allowing you to perform CRC and Base Encode/Decode with the Common Numerics functions.     cn has the following standard options for all sub-commands:     -h            Show help information.     -a            Use the specified algorithm.  The CRC, Encode, and Decode commands have various algorithms that can be used                   on data provided to them.     -s -<string>  Performs the operation on the specified string value.     -v            Function in Verbose mode.CN COMMAND SUMMARY     cn currently only provides functions for two activities: CRC calculation and Base Encoding and Decoding (base16, base32,     base64).     Here are brief descriptions of all the cn commands:     crc            Perform a CRC on the data provided either as a string or on stdin.                    Algorithms                    10 - kCN_CRC_8                    11 - kCN_CRC_8_ICODE                    12 - kCN_CRC_8_ITU                    13 - kCN_CRC_8_ROHC                    14 - kCN_CRC_8_WCDMA                    20 - kCN_CRC_16                    21 - kCN_CRC_16_CCITT_TRUE                    22 - kCN_CRC_16_CCITT_FALSE                    23 - kCN_CRC_16_USB                    24 - kCN_CRC_16_XMODEM                    25 - kCN_CRC_16_DECT_R                    26 - kCN_CRC_16_DECT_X                    27 - kCN_CRC_16_ICODE                    28 - kCN_CRC_16_VERIFONE                    29 - kCN_CRC_16_A                    30 - kCN_CRC_16_B                    31 - kCN_CRC_16_Fletcher                    40 - kCN_CRC_32_Adler                    41 - kCN_CRC_32                    42 - kCN_CRC_32_CASTAGNOLI                    43 - kCN_CRC_32_BZIP2                    44 - kCN_CRC_32_MPEG_2                    45 - kCN_CRC_32_POSIX                    46 - kCN_CRC_32_XFER                    60 - kCN_CRC_64_ECMA_182     Encode|Decode  Encode or Decode data provided either as a string or on stdin using one of the algorithms specified below.                    Algorithms                    1 - kCNEncodingBase64                    2 - kCNEncodingBase32                    3 - kCNEncodingBase32Recovery                    4 - kCNEncodingBase32HEX                    5 - kCNEncodingBase16ENVIRONMENT     CN_READ_SIZE  The "read size" to use when processing incoming data.     CN_WIDTH      The number of columns in which to output data when performing a base encoding.  The default is 64 columns.HISTORY     cn was introduced in Mac OS X version 10.9 and iOS version 7.0.Darwin                         February 16, 2017                        Darwin