To apply your burgeoning sysprog skills in the writing of familiar and described UNIX tools.

I have rigged up a grabit for wut1, which contains a directory structure, some useful Makefiles, and a header file to assist you in the development process.

It is your task to implement getopt(3)-style command-line arguments and ensure functionality for the following tools (pick one, but your one must be unique; each person is doing a different one). You may choose to do others for potential bonus point considerations.

The programs are (edit the appropriate section and record your name to claim it; once someone has claimed a program, it is considered unavailable for others in the class to do for core credit):

All of the programs should accept the following command-line arguments (check for program-specific additional ones as well in the appropriate section):

• -h/-? display usage information and exit
• -V display version information and exit
• -s “STRING” specify STRING as value to process
• -4 set nibble as processing unit size
• -7 set byte as 7-bits
• -8 set byte as 8-bits (default)
• -n no delimiter between processing units
• -d 'CHAR' use CHAR as delimiter between processing units
• -q quiet, do not display anything to STDOUT
• -v verbose, display more information to STDOUT

 binary.c - helper program to display hex numbers in their
            binary representation.

  synopsis: binary [OPTION]... [FILE]...

   compile: gcc -o binary binary.c -Wall --std=c99 -Werror
   execute: binary -s "de ad be ef 00 01 5a"
        or: echo "de ad be ef 00 01 5a" | binary

Additional Command-line arguments to implement:

• -O input data is to be considered as octal
• -D input data is to be considered as decimal
• -H input data is to be considered as hexadecimal (default)

Claimed by:

 parity.c - helper program to check the parity (odd, even, none)
            of input binary values.

  synopsis: parity PARITYOPTION [OPTION]... [FILE]...

     usage: the program takes in a binary value via the
            the command-line, a file, or from STDIN, and
            displays the end binary result in accordance with
            the parity settings.

   compile: gcc -o parity parity.c -Wall --std=c99 -Werror
   execute: parity -O -s "10110010"
        or: echo "10110010" | parity -E

Additional Command-line arguments to implement:

• -O odd parity
• -E even parity
• -N no parity

Lack of one of these options should generate an error.

Claimed by:

endian.c  - helper program to encode value(s) according to
            an indicated endianness.

  synopsis: endian [OPTION]... [FILE]...

   compile: gcc -o endian endian.c -Wall -Werror --std=c99
   execute: endian -s "de ad be ef" -L -8
        or: echo "de ad be ef" | endian -B -16

Additional Command-line arguments to implement:

• -16 use 16-bits as endian wordsize
• -B encode as big endian
• -L encode as little endian (default)

Your program can indicate a “setting not supported” message (and exit) if the -7 argument is specified.

Claimed by:

checksum.c - helper program to calculate checksum
             of provided values.

   synopsis: checksum [OPTION]... [FILE]...

    compile: gcc -o checksum checksum.c -Wall -Werror --std=c99
    execute: checksum -s "de ad be ef"
         or: echo "de ad be ef" | checksum

Additional Command-line arguments to implement:

• -P perform parity word checksum
• -S perform word sum checksum (default)

Claimed by:

Claimed by:

Claimed by:

Claimed by Andrei-abratkov

Claimed by:

Claimed by:

You will be implementing in accordance to the following specifications:

• well commented
  • top comment banner including compile and sample execution instructions (and description)
  • consistent presentation of comments throughout code identifying process particulars
• consistently indented
• getopt(3)-style command-line arguments
  • help/usage
• implement described functionality
• do reasonable error checking to ensure correct operation

Your standard submission logic applies:

lab46:~/src/sysprog/wut#$ submit sysprog wut# tool.c
...