Why the directories /bin and /usr/bin are usually found first in the PATH shell variable? Group of answer choices UNIX was initially created this way No specific reason They contain most of the UNIX user command program files They contain most of the data needed for UNIX commands

Write a C program that, given a text file, constructs Huffman code based on the character frequencies of the file and then encodes the file accordingly. The executable must accept the following command line options:• -i filename for the input file • -o filename for the output file

In UNIX, how would you remove the directory test and all files and subdirectories (recursively) in it? The directory test is located in (is a subdirectory of) /home/myid/smith/projects. O rmdir /home/myid/smith/projects/test O rmdir -r /home/myid/smith/projects/test rm -r /home/myid/smith/projects/test O rm -r projects/test

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…