When you say a file is indexed, do you mean it has an index directory that allows for random access?
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When you say a file is indexed, do you mean it has an index directory that allows for random access?
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- If a file contains an index directory that allows for random access, what does it mean?In Unix You have a record structured file named mydata that has four columns with default delimiter (white space). Sort the file based on its second column and redirect the file to a new file called sortedData.What do you mean when you say that a file has been indexed if it has an index directory that enables random access?
- If you remove a file by accident and want to get it back, you must follow the steps below.A file that includes an index directory to facilitate random access is Indexed file explain?JAVA PPROGRAM Write a program that prompts the user to enter a file name, then opens the file in text mode and reads names. The file contains one name on each line. The program then compares each name with the name that is at the end of the file in a symmetrical position. For example if the file contains 10 names, the name #1 is compared with name #10, name #2 is compared with name #9, and so on. If you find matches you should print the name and the line numbers where the match was found. While entering the file name, the program should allow the user to type quit to exit the program. If the file with a given name does not exist, then display a message and allow the user to re-enter the file name. The file may contain up to 100 names. You can use an array or ArrayList object of your choosing, however you can only have one array or ArrayList. Input validation: a) If the file does not exist, then you should display a message "File 'somefile.txt' is not found." and allow the…
- This function is used to create a bank dictionary. The given argument is the filename to load. Every line in the file should be in the following format: key: value The key is a user's name and the value is an amount to update the user's bank account with. The value should be a number, however, it is possible that there is no value or that the value is an invalid number. What you will do: - Create an empty bank dictionary. - Read in the file. - Add keys and values to the dictionary from the contents of the file. - If the key doesn't exist in the dictionary, create a new key:value pair. - If the key does exist in the dictionary, increment its value with the amount. - You should also handle the following cases: -- When the value is missing or invalid. If so, ignore that line and don't update the dictionary. -- When the line is completely blank. Again, ignore that line and don't update the dictionary. -- When there is whitespace at the…This is the most effective file organization method in which one must handle all data records in a file namedplease code in python count_word: This function takes a filename and a keyword. Return the number of times the keywordoccurs in the file. Initialize a variable to keep track of the number of times the keyword appears.Traverse the file by line. Use the count method on each line to find the number of times the keywordappears in it and add that amount to the variable
- programming language: C++ How can you generate unique id with file handling and by using data structure like linked list or algorithm? System will search first in the file when it is not there, it will increment the largest number and then input it in the system whenever the user input a new video in the list. The file will look like this: 101,Raya and the Last Dragon,Animation,Walt Disney Studio,6102,Captain America: The First Avenger,Adventure ,Marvel,10100,Captain America,Adventure ,Marvel,8Unix assignment Purpose: The purpose of this assignment is to use various concepts of the C Shell. 0. Change your default login shell to the C Shell. 1. Create a .cshrc file in your home directory that will do the following: * Create the alias (lsall) that will do all of the following: display the date, and a recursive long list of all files in a directory. * Create the alias (whoson) that will display the date and a sorted list of users logged in. * Declare the LOCAL variable that controls the size of your history list to the value 200. * Declare the shell variable that will cause the C Shell to send a message to your terminal whenever one of your background commands complete. 2. Create a .login file in your home directory to do the following. * Declare the GLOBAL Terminal Type variable to the value vt100. Display the value of the variable. Logout and log back in to make sure your .cshrc and .login files are automatically executed. Create a lab8.scr…In c++ what is a file? Why is it necessary to "open" and "close" a file? What happens when we do that?