[SOLVED] Csci493.66 assignment 4- a simplified find command p0

Task
The find command is a very powerful command. Its man page details all of the different ways it can be used. In this assignment, you’ll write a simple version of find named sfind that implements just a few of its features.
The assignment is specified by the following man-page-like description. Your job is to write a program that satisfies the requirements of this description. The information regarding program submission is at the end of the assignment.
NAME
sfind — find all files satisfying given test in given directory hierarchies
SYNOPSIS sfind [dir1 dir2 …] [test]
DESCRIPTION
The sfind command searches through the given directories for all files that satisfy the given test. If no directories are given, it uses the current working directory. For each file for which the test is true, it prints the relative pathname of the file with respect to the top level directory of the search. For example, if a file named bar in the tree rooted at dir2 passes the test, the path that it prints starts with dir2. By default, this command will not follow symbolic links. When it examines a symbolic link, it tests the link itself, not its target.
Only one test can be given to sfind, unlike the real find command.
TESTS
The following tests can be applied.
-s filename
The file being examined satisfies this test if it is a link to the same file as filename. This means, in particular, that it has the same inode index and is in the same filesystem as filename.
-m fileglob
The file being examined satisfies this test if its filename, meaning the pathname stripped of all leading directories, matches the fileglob.
OUTPUT
The pathname relative to the starting directory of the search is printed on a single line for every matching file. All error messages are written to the standard error stream, not standard output.
EXAMPLES
The following matches all files in any subdirectory of /usr whose name starts with b and ends with sh and has a single character in between.
$ sfind /usr -m ’b?sh’
/usr/share/lintian/overrides/bash
/usr/share/menu/bash
/usr/share/doc/texlive-doc/metapost/featpost/bash
/usr/share/doc/bash
/usr/bin/bash
The following matches all files in any subdirectory of ~ that are links to the same file as sf_scene.jpg. Here, sf_scene.jpg is in the current working directory.
$ sfind ~/pictures -s sf_scene.jpg
/home/stewart/pictures/desktops/DSC_2026.JPG
/home/stewart/pictures/MyPhotos/SanFrancisco_2018/DSC_2026.JPG
/home/stewart/pictures/MyPhotos/2018_07_08/DSC_2026.JPG
EXIT STATUS
0 If it succeeded.
1 If it failed.
SEE ALSO fnmatch(3), getopt(3)
Error Handling
The program should detect incorrect usage and report this on standard error along with the correct form of usage.
Hints
You should read the man page for fnmatch() and read the man page for getopt(). Notice that the test follows the directory names in this command. The getopt() man page explains how to handle this.
Code Re-Use and Program Structure
You are free to use any of the code in the class’s repository. There are a few demo programs in Chapter 8 that will be very useful. All of it has GNU General Public Licenses. If you do use any of that code, the documentation should indicate which parts are not written by you. The program should be a single source code file. All functions other than main() should precede main() in the file.
Instructions for Submitting the Assignment
1. Use the submithwk_cs49366 program to submit your program. To submit, if your file is ~/sfind.c, you’d enter
$ cd ~
$ submithwk_cs49366 -t 4 sfind.c
The program will copy sfind.c into the directory
/data/biocs/b/student.accounts/cs493.66/hwks/hwk4/ and if it is successful, it will display the message, “File hwk4_username.c successfully submitted.” where username is your username. You will not be able to read this file, nor will anyone else except for me. But you can double-check that the command succeeded by typing the command ls -l /data/biocs/b/student.accounts/cs493.66/hwks/hwk4
2. You can do step 1 as many times as you want. Newer versions of the file will overwrite older ones.
Grading Rubric
This assignment is 18% of your final grade. The output must be correct and the program must conform to the rules written in the Programming Rules document on the class’s webpage. It must be thoroughly documented.