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- Write a shell program that counts the number of files in a given directory. Thedirectory should be specified as a command line argument. The program doesnot need to count files recursively in subdirectories; instead, it should not count subdirectories at all.in fedora 37 1. Create a directory named Module9 and navigate to that directory. 2. Copy the file pay.dat from Module8 to Module9. Here it is again, just in case: 0001:John Smith:15.40 0002:Jane Smith:15.41 0003:George Jungle:12.10 0004:Ursula Jungle:16.11 3. Using a pipe symbol for filtering and sort the data to stdout. Enter: cat pay.dat | sort 4. Now, on your own, using a pipe symbol for filtering and sort the data in descending order to stdout and append that to a file named SortPay.dat. 5. Copy pay.dat to three files named: pay10,dat, pay12.dat, and pay02.txt. You may need to use multiple commands. 6. Use pattern matching to locate only pay02.txt. 7. Enter the command to remove pay2.dat and redirect both stdin and stdout to a file named RemovePay.txt. 8. Run the command in step 7 again. 9. Display the contents of RemovePay.txt 10. Take screen captures please explain each step and take screenshotsWrite an address book program that stores your contacts' names and their email addresses. The names and email addresses are originally stored in a file called phonebook.in, in the format: Harry Potter t..d@hogwarts.edu Hermione Granger b..h@hogwarts.edu Ron Weasley r..b@hogwarts.edu Draco Malfoy m..s@hogwarts.edu Severus Snape h..e@hogwarts.edu Albus Dumbledore a..x@hogwarts.edu Your program should read from the file, storing the names and corresponding email addresses in a dictionary as key-value pairs. Then, the program should display a menu that lets the user enter the numbers 1 through 5, each corresponding to a different menu item: 1) look up an email address 2) add a new name and email address 3) change an email address 4) delete a name and email address 5) save address book and exit When the user enters 1, the program should prompt them for a name, and then print the corresponding email address. If there is no dictionary entry under that name, the program should print, "Sorry,…
- Write a C program, called reverse, using standard I/O functions, to take a file as inputthen copies it to another file in reverse order. That is, the last byte becomes the first,the byte just before the last one becomes the second, etc.The program call should look like:reverse fileIn fileOutA process P forks a child C. After the fork(), both parent and child open() the same file for writing using the flag O_WRONLY resulting in descriptor fd. Subsequently P write()'s out a line containing the single character 1 to fd. C write()'s out a line containing the single character 2 to fd. C write()'s out a line containing the single character 3 to fd. P write()'s out a line containing the single character 4 to fd. Assuming that the above actions are ordered chronologically: a )What will be the contents of the file after the above sequence of actions? b ) How can you set things up so that the file captures all of the output?I have an issue with trying to modify my code, I need to instead to work such that a user imputs a file paths and the program synchronizes themthe code is too long to post so I have placed it belowhttps://github.com/Philanthropenos/2023-final-work-for-os-class/blob/main/Attempt1.1
- Suppose a library is processing an input file containing the titles of books in order to identify duplicates. Write a program that reads all of the titles from an input file called bookTitles.inp and writes them to an output file called duplicateTitles.out. When complete, the output file should contain all titles that are duplicated in the input file. Note that the duplicate titles should be written once, even though the input file may contain same titles multiple times. If there are not duplicate titles in the input file, the output file should be empty. Create the input file using Notepad or another text editor, with one title per line. Make sure you have a number of duplicates, including some with three or more copies.Suppose a library is processing an input file containing the titles of books in order to identify duplicates. Write a program that reads all of the titles from an input file called bookTitles.inp and writes them to an output file called duplicateTitles.out. When complete, the output file should contain all titles that are duplicated in the input file. Note that the duplicate titles should be written once, even though the input file may contain same titles multiple times. If there are not duplicate titles in the input file, the output file should be empty. Create the input file using Notepad or another text editor, with one title per line. Make sure you have a number of duplicates, including some with three or more copies. (Programming Language: Java)Implement a program that is able to read in a set of numbers from a file input.csv and compute the average of each "row" inside of the file. Your program should be dynamic, i.e. given any size input file, your program will still be able to compute the average number of each line Your output should display all floating point numbers with 2 decimal places of precision A sample file has been provided for you.
- Write a word-wrapping program ww that reads the contents of a file and prints it to standard output, wrapped to fit within a specified width. For example, to reformat “text.txt” to fit in 80 columns: $ ./ww 80 text.txtfrom Big Java 6th. Edition. Ch.11 P11.12: the capacitor is represented by the equation v(t) = B(1 - e-t/(RC)) Suppose the parameters of the electric circuit are B = 12 volts, R = 500 Ω, and C = 0.25 μF. Consequently v(t) = 12(1 – e-0.008t) where t has units of μs. Read a file params.txt containing the values for B, R, C, and the starting and ending values for t. Write a file rc.txt of values for the time t and the corresponding capacitor voltage v(t), where t goes from the given starting value to the given ending value in 100 steps. In our example, if t goes from 0 to 1000 μs, the twelfth entry in the output file would be: 110.00 7.02261 Make sure that your program catches the FileNotFoundException that can occur if your input file params.txt cannot be found. Your program should catch this exception, and then prompt the user for a file name again until a valid file is entered. I hbelieve I have everything needed, but I cannot figure out how to write in the…You have been tasked to write a C++ program that will go through the first step of encrypting an input file and writing the encrypted contents to an output file.For each letter read in from the input file, add 3 letters to the value of the input letter. If the input letter is an A then the encrypted letter would be a D. If the input letter from the input file is an X then the encrypted letter would be an A. All spaces, digits, punctuation, and special characters do not need to be encrypted at this level. Simply write the space, punctuation, or special character to the output file as is. If a letter is uppercase in the input file, it should remain as an uppercase character in the output file. If a letter is lowercase in the input file, it should remain as a lowercase character in the output file.Since this program runs each month, the input file will be of various lengths; therefore, the program will read until end of file.The input file is found in the current directory and is…