mmittee for Fairness to File Descriptors is organizing a protest against the e whenever the latter returns a file descriptor, it always returns the lowest r ly in use. Consequently, higher-numbered file descriptors are hardly ever us turn the lowest number not yet used by the program rather than the lowest ly not in use. They claim that it is trivial to implement, will not affect existi ainon What do you think?

mmittee for Fairness to File Descriptors is organizing a protest against the e whenever the latter returns a file descriptor, it always returns the lowest r ly in use. Consequently, higher-numbered file descriptors are hardly ever us turn the lowest number not yet used by the program rather than the lowest ly not in use. They claim that it is trivial to implement, will not affect existi ainon What do you think?

Name: The Committee for Fairness to File Descriptors is organizing a protes
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: The Committee for Fairness to File Descriptors is organizing a protest against the UNIX systembecause whenever the latter returns a file descriptor, it always returns the lowest number notcurrently in use. Consequently, higher-numbered file descript

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Write a C program which creates a child process to find all txt files in the root directory (i.e., “/") and stores the output in a text file called “all_txt_files.txtť". If the child process execution takes more than t seconds (measured at the parent), the parent should abort the execution of that child. Otherwise, after the child process termination, the parent has to create another child which will count the number of records in all_txt_files.txt and print out the output. The program should not allow the creation of orphan processes. - You need to include the C header file time.h to roughly count the execution time of the child process and play with different values of t so that both cases may happen. Another option may be the alarm system call. - You can use redirection (i.e., “>") to redirect the output of find to a txt file (e.g., find / - name "*. txt" > all_txt_files.txt). It's not a problem if find cannot access some directories. - You can count the number of lines in a txt…
From Operating System Concepts By Gagne, Galvin, Silberschatz. 10th edition Chapter 2 Project, implementation has to be in C: This assignment will involve designing two kernel modules: 1. Design a kernel module that creates a /proc file named /proc/jiffies that reports the current value of jiffies when the /proc/jiffies file is read, such as with the command cat /proc/jiffies. Be sure to remove /proc/jiffies when the module is removed. 2. Design a kernel module that creates a proc file named /proc/seconds that reports the number of elapsed seconds since the kernel module was loaded. This will involve using the value of jiffies as well as the HZ rate. When a user enters the command cat /proc/seconds your kernel module will report the number of seconds that have elapsed since the kernel module was first loaded. Be sure to remove /proc/seconds when the module is removed.
UNIX ASSIGNMENT - IXQuestion 9 : In an organisation one wants to know how many programmers are there. The employee data is stored in a file called ‘personnel’ with one record per employee. Every record has field for designation. How can grep be used for this purpose?
Unix-based operating systems usually include a tool named tail. It displays the last 10 lines of a file whose name is provided as a command line argument. Write a Java program that provides the same behavior i.e. the user can specify how many lines to print from the terminal. Display an appropriate error message if the file requested by the user does not exist, or if the command line argument is omitted. Note: Make sure to display the last n lines of a file whose name is provided as a command line argument. You might need to pass a file as an argument, therefore make sure to have access to a sample file, the contents of which you want to print out.
To be done using C programming:Two identical files are given with different names to them. But some characters in the content of the second file are corrupted. Find the line number and their position where those corrupted letter exists as well as Total number of corrupted (error) letters. Examples: Input: File1.txt contains It is fun to code with C File1.txt contains It is fun to code with C# Output: Line Number : 2 Error Position:2 Total Errors:1 Steps Open two file using File pointer in read only mode. Fetch data of file in two char variable one by one until end of file. If variable encounter new line then increment line number and reset position to zero. If variables are not equal then increment number of error and print error line as well as error index.
Write a C program to Implement a system of three processes which read and write numbers to a file. Each of the three processes P1, P2, and P3 must obtain an integer from the file (these instructions must be executed 200 times). The file only holds one integer at any given time. Given a file F, containing a single integer N, each process must perform the following steps 1. Fork two processes For 200 times: 2. Open F 3. Read the integer N from the file 4. Close F 5. Output N and the process' PID (On the screen) 6. Increment N by 1 7. Open F 8. Write N to F (overwriting the current value in F) 9. Close F b) Briefly describe why the processes P1, P2, and P3 obtain/read duplicates of numbers (why does a particular integer x appear in the output of more than one process)? Suggest a solution (you do not need to implement it) to guarantee that no duplicate numbers are ever obtained by the processes. In other words, each time the file is read by any process, that process reads a distinct…
Implement a system of three concurrent processes which read and write sequence numbers to a file. Each of the three processes must obtain 200 integers from the file. The file only holds one integer at a given time. Given a file, F, containing a single integer, each process must perform the following steps: Please show steps and answer.
Answer the given question with a proper explanation and step-by-step solution. Hello, I am trying to make a program that prints the contents of a file but whenever I try to run it, it just prints a bunch of question marks infinitely and this only happens when I run it on a UTM virtual machine(Linux terminal). It works fine when I run it on my Mac terminal so I am not sure if it has to do with the virtual machine or my program. Please help!! Image 1: cat.c Image 2: input.txt Image 3: output/results
C++ PLEASE!! Working on a project that is about word count with MapReduce, need a file manager class to take care of reading all txt file from a directory with giving path. The file manager class need to open the directory with the giving path which the user will input, then open the path and open all the txt files in that directory and break the text into single line and pass it to another class to do mapping. Please help with the file manager class!! Thank you!!
Need help to implement networking in python Server.py Load data from file This option will ask the user for a fully qualified path and will load a JSON file containing the information for users and pending messages. The format of the JSON file will be defined based on your implementation and it will the same used to save the data into file (menu option #4). Functionalities the server must provide: 1) User Sign Up: adds a user identified by a phone number to the system. a) Protocol: USR|username|password|display_name b) Response: 0|OK for success. 1| for an error. c) The server should validate that the username does not exist 2) User Sign In: verify user credentials a) Protocol: LOG|username|password b) Response: i) 0|OK → the credentials are correct. ii) 1|Invalid Credentials iii) 2|Already Logged In → in case that the user is logged in from another client. c) This will help the server knowing which user is connected. d) The server should keep a list of connected clients, which should…
Unix-based operating systems usually include a tool named tail. It displays the last 10 lines of a file whose name is provided as a command line argument. Write a Java program that provides the same behavior i.e. the user can specify how many lines to print from the terminal. Display an appropriate error message if the file requested by the user does not exist, or if the command line argument is omitted.
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 fileOutSubmit your source code and script files