What are the returned values of the following commands? >>rc_wait=wait(NULL); >getpid(); > write(file_desc,"HI \n", 51); > file_desc = open("data.txt", O_WRONLY| O_APPEND); > close(0); dup(p[0]); %3D
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![What are the returned values of the following commands?
>>rc_wait=wait(NULL);
>getpid();
>> write(file_desc,"HI \n", 51);
> file_desc = open("data.txt", O_WRONLY| O_APPEND);
> close(0);
dup(p[0]);](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F51744f9d-70af-4f48-9eba-8890c547577d%2F7faf12f2-bb19-4cc4-83d2-2970a1d8878f%2F3w7dk9a_processed.jpeg&w=3840&q=75)
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- modify minishell.c to run who, ls, and date with option. who will show the count of users, ls will list files in long listing format and date will show UTC time. Modify this file so the shell can run commands with options.*/#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/wait.h>#include <stdlib.h>#include <fcntl.h> int main(int argc, char *argv[]){ char *cmd[] = {"who", "ls", "date"}; int i; while(1){ printf("0=who 1=ls 2=date : "); scanf( "%d", &i ); if(i<0 || i>2) continue; pid_t result= fork(); if(result==0) { /* child */ execlp( cmd[i], cmd[i], (char *)0 ); printf("execlp failed\n"); exit(1); } else if (result >0){ /* parent */ int status; wait(&status); } else{ //handle error } } return 0;}Write a command which will display only the permissions of a file F with help of ls-l commandHow can I change this function ? I need to open the file and can write the name I want to delete . And be deleted. void removeContact(){fstream file;file.open("Contact'sBook.txt");browse();int delChoice;cout << "Enter Contact to be deleted by index no"<< endl;cin >> delChoice;for(int i =delChoice-1; i < count-1;i++){Person[i].FullName = Person[i+1].FullName;Person[i].Birthday =Person[i+1].Birthday;Person[i].Address = Person[i+1].Address;Person[i].Email= Person[i+1].Email;Person[i].PhoneNumber = Person[i+1].PhoneNumber;}count--;cout<< "AddressBook after deletion is " <<endl;browse();} Textfile contains for ex Helena but my function dosn´t find it.
- Q_____Q.6. Create a JSON file named invoice.json and write into it the following dictionary: invoice_dict = {' invoice": [{part_num': 500, 'part_descr': 'hammer', 'quantity": 10)}, {'part_num': 600, 'part_descr': "screwdriver', 'quantity': 5)}]} Then, read the file with catching exception like FileNotFoundError in a try suite. Display its pretty-printed JSON (p.330). Output?.#include <stdio.h> struct clientData { unsigned int acctNum; char lastName[15]; char firstName[10]; double balance; }; unsigned int enterChoice(void);void textFile(FILE* readPtr);void updateRecord(FILE* fPtr);void newRecord(FILE* fPtr);void deleteRecord(FILE* fPtr); int main(void) { FILE* cfPtr; if ((cfPtr = fopen("accounts.dat", "rb+")) == NULL) { puts("File could not be opened."); } else { unsigned int choice; while ((choice = enterChoice()) != 5) { switch (choice) { case 1: textFile(cfPtr); break; case 2: updateRecord(cfPtr); break; case 3: newRecord(cfPtr); break; case 4: deleteRecord(cfPtr); break; default: puts("Incorrect…Given s='<span class="viewcount">/acct /1,696,807 /name/</span>' write a Bash command to extract the numbers without commas. Your command must work for 1 any number of numbers and commas. Answers based on fixed nubmer ofnumbers and com- mas . Write a grep statement to match lines such as below using two backreferences. Mr abc came home to Mrs abc and visit Mr xyz and Mrs xyz to discuss backreferences
- How do you avoid overwriting data when adding more data to an existing JSON file? I have an RMI code, and the program overwrites all existing values every time a client enters new data. How can I stop this? Please use JAVA code and preferrable this code should run in Intellij.Suppose you have a file Monster.txt that lists the Monster Energy Drinks the company offers, on one line and the price for a case of 24, with the customer ratings on a scale of 1-5 on the second line. The following shows the first few lines of the file: Monster Energy Nitro Super Dry Maximum Strength Drink 39.99 4.5 Monster Energy Ultra Red, Sugar Free Energy Drink 39.99 5 Red Bull Energy Drink, Zero 92.23 4.5 Red Bull Energy Drink, Coconut Berry 41.18 5 Monster Energy Juice, Pipeline Punch 34.98 5 Red Bull Energy Drink, Coconut Berry 41.18 5 The first line means the drink name is: Monster Energy Nitro Super Dry Maximum Strength and the second line means that a case of 24 cost $39.99 and it was rated 4.5/5. NOTE: WE DO NOT KNOW HOW MANY LINES THERE ARE IN THE FILE. Write the C++ program (with comments) that reads the data from the file, lists only those drinks rated 5 stars, and indicates if the five star drink comes with a free six pack or not.The customer gets a free six…Assume the size of the file.txt below is 100 GB. Is there anything wrong with the following Spark code? Is there anything wrong with this code? How can it be fixed? from collections import defaultdict text_file = sc.textFile("file.txt") counts = text_file.flatMap(lambda line: line.split(" ")).map(lambda word: (word, 1)).collect() key_val = defaultdict(int) for item in counts: key = item[0] val = item[1] key_val[key] += int(val) filtered_key_val = dict() for k, v in key_val.items(): if v >= 100: filtered_key_val[k] = v return filtered_key_val
- Case 6. How can i sort the names inside of file where there is already data? Thanks #include<iostream>#include <fstream>#include<string>using namespace std;#define M 100int count=0;struct AddressBook{string FullName;int Birthday;string Address;string Email;int PhoneNumber;}Person [M];void WriteToFile();void add();void browse();void searchByName();void searchByBirthday();void removeContact();void order();int main(){fstream file;file.open("Contact'sBook.txt");int choice;do{cout << "Please Enter Your Choise: \n";cout << " 1- Add New Person\n 2- Browse\n 3- Search By Full Name \n 4-Search By Birthday \n 5-Remove a Person" << "\n 6- Alphabetical Order \n 7- Exit\n";cin >> choice;switch(choice){ case 1: add(); break;case 2: browse();break;case 3: searchByName();break;case 4: searchByBirthday();break;case 5: removeContact();break;case 6: order(); break;case 7: return 0; }}while (count < M );return 0; }void WriteToFile(string FullName, int Birthday,…What would be the content of out.txt after executing the following code? int main() { ofstream file("out.txt"); double num = 3.1415; file << fixed; file << num << endl; file << setprecision(3); file << num << endl; file << setprecision(2); file << num << endl; file << setprecision(1); file << num << endl; return 0;} Group of answer choices 3.14153.143.13 3.14153.1423.143.1 3.1415003.1423.143.1 3.1415003.14153.1423.14Will the operator filetype:log return the results of log files?
