Create an application that uses a socket connection to allow a client to specify a file name of a text file and have the server send the contents of the file or indicate the file does not exist. The server must contain a text based password file ("user name" & "password"). The client must pass a valid username and password to establish a connection with the Server (see Note 1). Notes: 1. A much better approach would be to encrypt the password file. The Java Cryptographic Extension (available since JDK 1.4) provides an API. Java Cryptography Architecture Reference Guide (JCA Guide): on oracle Introduction, Code Examples - Computing a Message Digest Object (i.e. one-way hash; using SHA-1) -Please ensure that it works need clear help compiling properly with no errors.

Create an application that uses a socket connection to allow a client to specify a file name of a text file and have the server send the contents of the file or indicate the file does not exist. The server must contain a text based password file ("user name" & "password"). The client must pass a valid username and password to establish a connection with the Server (see Note 1). Notes: 1. A much better approach would be to encrypt the password file. The Java Cryptographic Extension (available since JDK 1.4) provides an API. Java Cryptography Architecture Reference Guide (JCA Guide): on oracle Introduction, Code Examples - Computing a Message Digest Object (i.e. one-way hash; using SHA-1) -Please ensure that it works need clear help compiling properly with no errors.

A+ Guide To It Technical Support

10th Edition

ISBN:9780357108291

Author:ANDREWS, Jean.

Publisher:ANDREWS, Jean.

Chapter16: Securing And Sharing Windows Resources

Section: Chapter Questions

Problem 13TC: You have set up a user group named Accounting and have put all employees in the Accounting...

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You work for a small company that keeps the following information about its clients:• first name• last name• a 5-digit user code assigned by your company.The information is stored in a file clients.txt with the information for each client on one line(last name first), with commas between the parts. For exampleJones, Sally,00345Lin ,Nenya,00548Fule,A,00000Smythe , Mary Ann , 00012Your job is to create a program assign usernames for a login system.First: write a function named get_parts(string) that will that will receive as its arguments astring with the client data for one client, for example “Lin ,Nenya,00548”, and return theseparate first name, last name, and client code. You should remove any extra whitespace from thebeginning and newlines from the end of the parts.You’ll need to use some of the string methods that we covered in this lessonYou can test your function by with a main() that is just the function call with the argument typed in.Second: write a function make_user(param)…
Using your Client that accepts a stream from the Server in question 3. The client receives the Dictionary Based Object from the Server. client code : import socketimport json # Initialize socketHOST = 'localhost'PORT = 5000client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)client_socket.connect((HOST, PORT)) # Receive and print the CO2 data fieldswhile True: data = client_socket.recv(1024).decode() if not data: break field_data = json.loads(data) print(field_data) # Close the socketclient_socket.close()
Below is cache.py. Make sure the code works properly and is plagarism free. Make sure to show the screenshot of the output with the screenshot of the code being tested as plagarism free. cache.py import socketimport sys def handle_client(client_socket): while True: command = client_socket.recv(1024).decode() if not command: break if command == 'quit': break elif command == 'put': receive_file(client_socket) elif command == 'get': send_file(client_socket) else: print("Invalid command.") break client_socket.close() def receive_file(client_socket): pass def send_file(client_socket): pass def main(): if len(sys.argv) != 4: print("Usage: cache.py <port> <server_ip> <server_port> <transport_protocol>") return port, server_ip, server_port, transport_protocol = int(sys.argv[1]), sys.argv[2], int(sys.argv[3]), sys.argv[4]…
In C++ Implement a simple version of the linux grep command in C++. grep - Looks through a file, line by line, trying to find a user-specified search term in the line. If a line has the word within it, the line is printed out, otherwise it is not. Use the system calls open(), getline(), close(). Requirements (examples run from. terminal) Your program grep is always passed a search term and zero or more files to grep through (thus, more than one is possible). It should go through each line and see if the search term is in it; if so, the line should be printed, and if not, the line should be skipped. [terminal]$ ./grep ! main.cpp main2.cppcout << "Hello, World!";cout << "Programming is great fun!"; The matching is case sensitive. Thus, if searching for world, lines with World will not match. Lines can be arbitrarily long (that is, you may see many many characters before you encounter a newline character, \n). grep should work as expected even with very long lines. For…
Implement a simple version of the linux grep command in C++. grep - Looks through a file, line by line, trying to find a user-specified search term in the line. If a line has the word within it, the line is printed out, otherwise it is not. Use the system calls open(), getline(), close(). Requirements (examples run from. terminal) Your program grep is always passed a search term and zero or more files to grep through (thus, more than one is possible). It should go through each line and see if the search term is in it; if so, the line should be printed, and if not, the line should be skipped. [terminal]$ ./grep ! main.cpp main2.cppcout << "Hello, World!";cout << "Programming is great fun!"; The matching is case sensitive. Thus, if searching for world, lines with World will not match. Lines can be arbitrarily long (that is, you may see many many characters before you encounter a newline character, \n). grep should work as expected even with very long lines. For this,…
You have set up a user group named Accounting and have put all employees in the Accounting department in this group, which has been given permission to use the Financial folder on a file server. You are now asked to create a subfolder under Financial named Payroll. Megan, the payroll officer, is the only employee in the Accounting department allowed to access this folder. What is the best way to configure the new share? a. Assign Megan read/write permissions to the Payroll folder, and explain to your boss that it is not a best practice to give only one employee access to an important folder. b. Assign Megan read/write permissions to the Payroll folder. c. Create a new user group named Payroll, put Megan in the group, and assign the group read/write permissions to the Payroll folder. d. Ask your boss to allow you to put the folder outside of the Financial folder so you can assign a new user group read/write permissions to this folder that will not conflict with the Accounting user group.
In termina, install the paho-mqtt module with pip using the following command: Sudo pip3 install paho-mqtt Create a new folder by the name of lab_6 and create a new python file mqtt_script_1.py In the file, TYPE the following code: import paho.mqtt.client as mqtt # The callback for when the client receives a CONNACK response from the server. def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) # Subscribing in on_connect() means that if we lose the connection and # reconnect then subscriptions will be renewed. client.subscribe("etec224_mqtt_test/") # The callback for when a PUBLISH message is received from the server. def on_message(client, userdata, msg): print(msg.topic+" "+str(msg.payload)) client = mqtt.Client() client.on_connect = on_connect client.on_message = on_message client.connect("broker.emqx.io", 1883, 60) client.loop_forever() Create another file py and add the following code to it.…
) Write Linux commands for the following:i) Copy a file test1.py from Prac01 directory to Subdir1 directory in the followingdirectory structure.FOPPrac01Prac02Prac03-Subdir1Subdir2(Where FOP is at the top level then Prac01, 02 and 03 are at next level and Subdir1and 2 are next to next level.)ii) To delete a directory DIR which has a file test2.py in it.
Nobody has understood the question thus far. Please read. It's Java. Write a client program and server program. The server uses a socket connection to allow a client to supply a filename and the server will send the file contents to the client or an error message if the file does not exist. The client will create a new file with the same contents. The client will supply the filename "input.txt" to the server and create as it's output "output.txt". Don't ask the user for these names. The Server sends whatever file the Client requests. Don't put "input.txt" in the Server. The client must get the contents from the Server. It must not read input.txt directly. Do not accept arguments from the command line. One class named Server and one named Client. These must be the ONLY 2 CLASSES
Modify rnfile such that it will keep a copy of the old existing file (if available) before the renaming operating. Assume that apple.txt will be renamed as orange.txt. When the command “./rnfile apple.txt orange.txt” is executed, the script will first check whether orange.txt exists under the given path or not. If the file exists then orange.txt will be renamed as orange.txt_old before renaming apple.txt as orange.txt. Make rnfile an executable shell script; try to rename a file to a filename that already exists. Show your shell program and its output to the instructor.
using java: Write a Server-Client application hosting several methods on the Server-side while the Client-side makes the requests through RMI.Part I Write two methods for: (1) adding a new student to the lecture and (2) findthe lowest grade taken in the lecture.Part II Write two methods for reading/saving the lecture in a serial file.Part III Write Server side class for providing the methods in the API.
1) On the command line, you can redirect stdout and stderr, but not stdin. True False 2) System calls are a way for an application to make a request to the underlying operating system. True False 3) If you call open("foo.txt", O_WRONLY) and foo.txt doesn't exist, it'll be created. True False 4) On the command line, you can redirect stdout and stderr to the same file. True False