Answered: User A wants to read a data through any…

User A wants to read a data through any of the input device and need to perform the following task using shell script, Find the reverse of a given number

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

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Which of the following is/are valid ways to allocate memory for an integer by dynamic memory allocation in CPP? a. int *p = new int(100); b. int *p; p = new int; *p = 100; c. int *p = NULL; p = new int; *p=100; d. Only 1,2 e. All of these
linux fix this code to pure system IO calls and redo it into standard IO calls("12345\n 6789\n 10"-->info in the text file.) #include<stdio.h>#include<fcntl.h> void main(){ char a[9999];int b,line=0; int x=open("list.txt", O_RDONLY);while (b=read(x, a, sizeof(a))){for (int i=0; i<b; i++){if (a[i] == '\n'){line++;}}} printf("#lines: %d",line+1); }
Review the following program: import urllib.request, urllib.parse, urllib.error fhand = urllib.request.urlopen('http://data.pr4e.org/romeo.txt') counts = dict() for line in fhand: words = line.decode().split() for word in words: counts[word] = counts.get(word, 0) + 1 print(counts) 3.1 Provide an explanation for EACH line of the following program. 3.2 Run the above program and include a full window screenshot with system time and date in the answer. 3.3 Run the above program with https://www.py4e.com/code3/romeo-full.txt and include a full window screenshot with system time and date in the answer.
By using Linux (Centos 7 or 8) develop a C program to apply the memory times and times, run with this shellprogram, then show the MemToal,MemFree,Active with excel file. Here are the codes for reference. Code no.1: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> main(int argc, char *argv[]) { void * p[100]; int i,times,msize; if(argc!=3) { times=20; msize=1024; } else { sscanf(argv[1],"%d",&times); sscanf(argv[2],"%d",&msize); if(msize>10240) msize=10240; msize=1024*msize; if(times>100) times=100; } for( i=0; i<times; i++) {…
4) Which of the following is/are valid ways to allocate memory for an integer by dynamic memory allocation in CPP? a. int *p = new int(100);b. int *p; p = new int; *p = 100;c. int *p = NULL; p = new int; *p=100;d. Only 1,2e. All of these 5) Choose the correct option?#include<iostream>using namespace std; class Base {}; class Derived: public Base {}; int main(){Base *bp = new Derived;Derived *dp = new Base;} a. No Compiler Errorb.Compiler Error in line “Base *bp = new Derived;”c. Compiler Error in line ” Derived *dp = new Base;”d. Runtime Error
The following code must be written in python for this HW assignment. I will provide a skeleten for the code and you must write some lines of code to satisfy the objective of the prorgram. You will develop a web server that handles one HTTP request at a time. Your web server should acceptand parse the HTTP request, get the requested file from the server’s file system, create an HTTP responsemessage consisting of the requested file preceded by header lines, and then send the response directly tothe client. If the requested file is not present in the server, the server should send an HTTP “404 NotFound” message back to the client. Put an HTML file (e.g., HelloWorld.html) in the same directory that the server is in. Run the serverprogram. Determine the IP address of the host that is running the server (e.g., 128.238.251.26). Fromanother host, open a browser and provide the corresponding URL. For example:http://128.238.251.26:6789/HelloWorld.html‘HelloWorld.html’ is the name of the file you…
IN SCALA PLEASE COULD YOU COMPLETE THE CODE OF FUNCTIONS: get_csv_url, process_ratings, process_movies, groupById, favourites, suggestions and recommendations import io.Source import scala.util._ // (1) Implement the function get_csv_url which takes an url-string // as argument and requests the corresponding file. The two urls // of interest are ratings_url and movies_url, which correspond // to CSV-files. // // The function should ReTurn the CSV-file appropriately broken // up into lines, and the first line should be dropped (that is without // the header of the CSV-file). The result is a list of strings (lines // in the file). def get_csv_url(url: String) : List[String] = ??? val ratings_url = """https://nms.kcl.ac.uk/christian.urban/ratings.csv""" val movies_url = """https://nms.kcl.ac.uk/christian.urban/movies.csv""" // testcases //----------- //: //val movies = get_csv_url(movies_url) //ratings.length // 87313 //movies.length // 9742 // (2) Implement two functions that…
the following must be done using shell scripting in linuxThe script will read from stdinThe format of the matrix is fixed write a script that prints the sum of each row the matrix can also include 1 and 2 digit numbers input| 106 150 || 100 125 || 115 215 | output256225330
QUESTION ATTACHED KINDLY SEE AND MATCH INPUT-OUTPUT AS IT IS. ALSO, USE THE BELOW TEMPLATES WHILE MAKING A SOLUTION ---------TEMPLATES------------ main.cpp #include <iostream>#include <sstream>#include "Donor.cpp"using namespace std;int main(){//Fill your code heretry{//Fill your code here}catch(const char* c){//Fill your code here}return 0;} Donor.cpp #include <iostream>#include <sstream>using namespace std;class Donor{protected:string name;int age;int weight;string bloodGroup;public:Donor(){}Donor(string name, int age, int weight,string bloodGroup) {this->name = name;this->age = age;this->weight = weight;this->bloodGroup = bloodGroup;}bool validateDonor(Donor donor){//Fill your code here }};
// switch_stdout.c: demonstrates use of dup2() and dup() to redirect // standard output to a new location temporarily and then restore it. #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> int main(){ int stdout_bak = dup(STDOUT_FILENO); // make a backup of stdout system("rm -f mystery.txt"); // remove file using a shell command int out_fd = open("mystery.txt", // open file mystery.txt O_WRONLY|O_CREAT, // for writing, create if needed S_IRUSR|S_IWUSR); // give user read/write permission if(out_fd == -1){ // check for errors opening file perror("Couldn't open file 'mystery.txt'"); exit(1); // bail out if open fails } printf("1. Now you see me.\n"); // print to the screen dup2(out_fd, STDOUT_FILENO); // change stdout to go to mystery.txt printf("2. Now you don't!\n"); // print goes to…
I have a "user.json" file that looks like this { "something@somewhere.com": "maybe", "john@beatles.uk": "lennonj!", "paul@beatles.uk": "mccartney", "mick@rollingstones.uk": "jaggerm!" } using java script i have to parse this file and then check this email and file conbinations against user input This is the code i m using to parse the file. function lookUpCredentials(filePath, cb) { fs.readFile(filePath, (err, fileData) => { if (err) { return cb && cb(err); } try { const object = JSON.parse(fileData); return cb && cb(null, object); } catch (err) { return cb && cb(err); } }); } lookUpCredentials("./user.json", (err, data) => { if (err) { console.log(err); return; } credentials = data; }); and this is the code i m using to get input from the user app.post('/login', (req, res) => { let username =…
Trace the following Code and then print the output. msg db 'hello world$' newline db 10,13,'$' buffer db 10 dup mov ah,9 mov dx,offset msg int 21h ;new line mov ah,9 mov dx, offset newline int 21h ;enter a string from the keyboard lea dx,buffer mov ah,0ah int 21h ;new line mov ah,9 mov dx,offset newline int 21h ;adding the $ symbol at the end of the string mov bx,0 mov bl,buffer[1] mov buffer[bx+2],'$' mov ah,9 mov dx,offset buffer+2 int 21h