Write a shell script that reads a file name and checks this file exists or not. If the file exists, searches this file for "Joshua" or "joshua" and displays the total number of occurrences of "Joshua" and "joshua"; if the file does not exists, display "the file does not exist." Hints: you can use cat and egrep.

PLEASE ASK THE USER IF THEY WOULD LIKE TO WRITE INTO THE FILE IF THEY CHOOSE NOT TO DELETE THE FILE, AND WRITE IT INTO THE FILE USING outputStream Write a complete java program that: asks the user for a filename tests whether the file exists and tells the user  if it does exist ask the user whether it should be deleted.  Either delete or do not delete the file based on the user input. If they don't delete it, ask them if they would like to write to the file If they want to write, ask what they want to write to the file and write it.  Make sure to provide plenty of console output dialog specifying what status/actions are taken at each step.

Solve query and please describe to the one who has no or little experience on Linux

Create a file named Question.py and then create a class on it named Question. A Question object will contain information about a trivia question. It should have the following: A constructor, with the following parameters: 1 string to be the question itself (for example: "When was Cypress College Founded?"). A list of four strings, each a possible answer to the question (only one of them should be correct) An integer named 'answer': the index in the list of the correct answer. Example: if the third answer in the answer list is the correct one, the client should pass 2 to this parameter to signify the correct answer is in index 2. Overload the __str__ method. It should return a string made up of the question and the four possible answers. A ‘guess’ method, with an integer parameter. If the 'answer' attribute matches the int passed to 'guess', return True. Otherwise, False On Main.py, in your main function, create a list and add four Question objects to it. You may give them with…

Java: Write a static method named textCount that takes a Scanner representing a file as a parameter and that reports various statistics about the file.  In particular, your method should report the number of lines in the file, the total number of characters (not counting any new-line \n characters) in the file, and the length and text of the longest line.  You may assume that the input file has at least one line of input. For example, if the file contains the following text: Twas brillig and the slithy toves did gyre and gimble in the wabe. All mimsey were the borogroves, and the mome raths outgrabe.    "Beware the Jabberwock, my son, the jaws that bite, the claws that catch, Beware the JubJub bird and shun the frumious bandersnatch." The program would find that there are 9 lines (blank lines count), a total of 254 characters in the file (33 on the first line, 32 on the next line, 31 on the next line, 28 on the next, 0 on the next, etc) and that the longest line is the one that begins…

Challenge 3: Encryption.java and Decryption.java Write an Encryption class that encrypts the contents of a binary file. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded content out to a second file. The second file will be a version of the first file, but written in a secret code. Use a simple encryption technique, such as reading one character at a time, and add 10 to the character code of each character before it is written to the second file. Come up with your own encryption method. Also write a Decryption class that reads the file produced by the Encryption program. The decryption file will use the method that you used and restore the data to its original state, and write it to a new file.

Write a complete java program that: asks the user for a file name tests whether the file exists and tells the user  if it does exist asks the user whether it should be deleted.  Either delete or do not delete the file based on the user input. If they don't delete, ask them if they would like to write to the file If they want to write, ask what they want to write to the file and write it.  Make sure to provide plenty of console output dialog specifying what status/actions are taken at each step.

// Program describes two files // tells you which one is newer and which one is larger import java.nio.file.*; import java.nio.file.attribute.*; import java.io.IOException; public class DebugThirteen1 {    public static void main(String[] args)    {       Path file1 =          Paths.get("/root/sandbox/DebugDataOne1");       Path file2 =          Paths.get("/root/sandbox/DebugDataOne2.txt");       try       {          BasicFileAttributes attr1 =             Files.readAttributes(file1, BasicFileAttributes.class);          System.out.println("File: " + file1getFileName());          System.out.println("Creation time " + attr1.creationTime());          System.out.println("Last modified time " + attr1lastModifiedTime());          System.out.println("Size " + attr1.size());          BasicFileAttributes attr2 =             Files.readAttributes(file2, BasicFileAttributes.class);          System.out.println("\nFile: " + file2.getFileName);          System.out.println("Creation time " +…