Question

/etc/passwd file is used to keep track of every registered user that has access to a system.

1- Write a program to find out what is the permission mode of the mentioned file (/etc/passwd) using ""stat"" system call.

Answer 1

To determine the permission mode of the / etc / passwd file using the "stat" system call, a program in a programming language like C can be developed.

Step-by-step explanation:

The "stat" system call is commonly used to retrieve information about a file, including its permission mode. Below is an example of a C program that utilizes the "stat" system call to find the permission mode of the / etc / passwd file:

hashinclude <stdio.h>

hashinclude <sys/stat.h>

int main() {

struct stat fileStat;

const char *filename = "/ etc / passwd";

// Use stat to get file information

if (stat(filename, &fileStat) < 0) {

perror("Error getting file information");

return 1;

}

// Extract and print the permission mode

printf("Permission Mode: %o\\", fileStat.st_mode & 0777);

return 0;

}

This program defines a structure (struct stat) to hold file information and then uses the "stat" system call to retrieve information about the specified file ( / etc / passwd ). The permission mode is then extracted and displayed using printf. The permission mode is represented in octal form.

Note: Symbol is not used. Hash is return. Because there is an issue in uploading.