Assume the following files are in the working directory: $ ls output.txt notes1 notes2 notestxt notes3 notes4 output.1 output.2 output.3 output-1b output-2b Give commands for each of the following, using wildcards to express filenames with as few characters as possible. a. List all files that begin with output. b. List all files that end in txt. c. List the output. files only. d. List the output.1, output.3, notes1, and notes3 files.

Assume the following files are in the working directory: $ ls output.txt notes1 notes2 notestxt notes3 notes4 output.1 output.2 output.3 output-1b output-2b Give commands for each of the following, using wildcards to express filenames with as few characters as possible. a. List all files that begin with output. b. List all files that end in txt. c. List the output. files only. d. List the output.1, output.3, notes1, and notes3 files.

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter13: File Input And Output

Section: Chapter Questions

Problem 7RQ

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Instructions Add a command to this chapter’s case study program that allows the user to view the contents of a file in the current working directory. When the command is selected, the program should display a list of filenames and a prompt for the name of the file to be viewed. Be sure to include error recovery in the program. If the user enters a filename that does not exist they should be prompted to enter a filename that does exist. An example of the program input and output is shown below: /root/sandbox 1 List the current directory 2 Move up 3 Move down 4 Number of files in the directory 5 Size of the directory in bytes 6 Search for a file name 7 View the contents of a file 8 Quit the program Enter a number: 7 Files in /root/sandbox: filesys.py example.txt Enter a file name from these names: example.txt THIS IS CONTENT OF AN EXAMPLE FILE. /root/sandbox 1 List the current directory 2 Move up 3 Move down 4 Number of files in the directory 5 Size of the directory in bytes 6…