Simple UNIX scripting assigment

I need to duplicate the sum command in SysV UNIX using nawk/ksh. I have the syntax scanning/options code done. Check file named syntax in the attached file. Also, Decimal to Hex and Hex to Decimal scripts are provided to be used for the algorithm calculations. Check the txt file for details on how to get this done. Script description: Sum2 calculates and prints a 16-bit checksum for the namedfiles, and also prints the number of 512 byte blocks in each file. It is typically used to look for bad spots, or to validate files communicated over some transmission line. The option -r causes an alternate algorithm to be used in computing the checksum (namely, the BSD algorithm.) read the [login to view URL] for more details. I am giving details how to get this done, step by step ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform UNIX Sys5 Using: nawk / ksh