Question 3: [2+2] a)What, to whom and how many values a fork system call returns? b)Assuming there is no syntax error, what is the output for the following C program for linux? All of you may need to put screenshot of your PC in
Question 3: [2+2]
a) What, to whom and how many values a fork system call returns?
b) Assuming there is no syntax error, what is the output for the following C program for linux? All of you may need to put screenshot of your PC in which Terminal login must be your arid number.
int main()
{ pid_t fork_return;
fork_return = fork();
if (fork_return == 0) {
execlp("/bin/ls", "ls", NULL);
printf("Child process ID: %d\n", getpid());
exit(0);
}
else { wait (NULL);
printf("Parent process ID: %d\n", getpid());
}
return 0;
}
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Question 3: [2+2] a)What, to whom and how many values a fork system call returns? b)Assuming there is no syntax error, what is the output for the following C program for linux? All of you may need to put screenshot of your PC in
Question 3: [2+2] a)What, to whom and how many values a fork system call returns? b)Assuming there is no syntax error, what is the output for the following C program for linux? All of you may need to put screenshot of your PC in
Arid No is 19-arid-898Question 3: [2+2]a) What, to whom and how many values a fork system call returns? b) Assuming there is no syntax error, what is the output for the following C program for linux? All of you may need to put screenshot of your PC in which Terminal login must be your arid number.int main(){ pid_t fork_return; fork_return = fork(); if (fork_return == 0) { execlp("/bin/ls", "ls", NULL); printf("Child process ID: %d\n", getpid()); exit(0); } else { wait (NULL); printf("Parent process ID: %d\n",...
Source code to modify: #include <stdio.h> #include <unistd.h> #include <sys/types.h> int main() { pid_t pid; /*fork...
Source code to modify:
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main()
{
pid_t pid;
/*fork a child process*/
pid = fork();
if (pid<0){ /*error occured*/
fprintf(stderr,"Fork failed\n");
return 1;
}
else if (pid == 0) { /*child process */
printf("I am the child %d\n",pid);
execlp("/bin/ls","ls",NULL);
}
else { /*parent process */
/*parent will wait for the child to complete*/
printf("I am the parent %d\n",pid);
wait(NULL);
printf("Child Complete\n");
}
return 0;
}
1. Write program codes for 3.21 a and...
Edit the code (shell.c) given to do the tasks asked! will rate for correct answer! Also,...
Edit the code (shell.c) given to do the tasks asked! will rate
for correct answer! Also, include a screen shot of the output and
terminal window of each command you used. Read carefully to do this
task please.
shell.c code given below.
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <string.h>
int main()
{
int PID;
char lineGot[256];
char *cmd;
while (1){
printf("cmd: ");
fgets(lineGot, 256, stdin); // Get a string from user (includes \n)
cmd = strtok(lineGot, "\n");...
Source code to modify:
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main()
{
pid_t pid;
/*fork a child process*/
pid = fork();
if (pid<0){ /*error occured*/
fprintf(stderr,"Fork failed\n");
return 1;
}
else if (pid == 0) { /*child process */
printf("I am the child %d\n",pid);
execlp("/bin/ls","ls",NULL);
}
else { /*parent process */
/*parent will wait for the child to complete*/
printf("I am the parent %d\n",pid);
wait(NULL);
printf("Child Complete\n");
}
return 0;
}
1. Write program codes for 3.21 a and...
Edit the code (shell.c) given to do the tasks asked! will rate
for correct answer! Also, include a screen shot of the output and
terminal window of each command you used. Read carefully to do this
task please.
shell.c code given below.
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <string.h>
int main()
{
int PID;
char lineGot[256];
char *cmd;
while (1){
printf("cmd: ");
fgets(lineGot, 256, stdin); // Get a string from user (includes \n)
cmd = strtok(lineGot, "\n");...
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