Update README.md

README.md

@@ -2,6 +2,8 @@
 Ex02-Linux Process API-fork(), wait(), exec()
 # Ex02-OS-Linux-Process API - fork(), wait(), exec()
 Operating systems Lab exercise
+## NAME:A.DIVIYADHARSHINI
+## ROLL NO: 212224040080
 
 
 # AIM:
@@ -25,7 +27,26 @@ Test the C Program for the desired output.
 
 ## C Program to create new process using Linux API system calls fork() and getpid() , getppid() and to print process ID and parent Process ID using Linux API system calls
 
+```
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+int main(void)
+{	//variable to store calling function's process id
+	pid_t process_id;
+	//variable to store parent function's process id
+	pid_t p_process_id;
+	//getpid() - will return process id of calling function
+	process_id = getpid();
+	//getppid() - will return process id of parent function
+	p_process_id = getppid();
+	//printing the process ids
 
+//printing the process ids
+	printf("The process id: %d\n",process_id);
+	printf("The process id of parent function: %d\n",p_process_id);
+	return 0; }
+```
 
 
 
@@ -35,18 +56,75 @@ Test the C Program for the desired output.
 
 
 
+## OUTPUT
 
 
-##OUTPUT
-
-
+<img width="1037" height="86" alt="image" src="https://github.com/user-attachments/assets/fd833999-794f-439a-b27c-64d3682c4c63" />
 
 
+## C Program to create new process using Linux APU system calls fork() and exit()
 
+```
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+int main() {
+    int pid;
+    pid = fork();
+    if (pid == -1) {
+        perror("fork");
+        exit(EXIT_FAILURE);
+    }
+    else if (pid == 0) {
+        printf("I am child, my pid is %d\n", getpid());
+        printf("My parent pid is: %d\n", getppid());
+        exit(EXIT_SUCCESS);
+    }
+    else {
+        printf("I am parent, my pid is %d\n", getpid());
+        sleep(100);
+        exit(EXIT_SUCCESS);
+    }
+    return 0;
+}
+```
+## OUTPUT
+<img width="1037" height="73" alt="image" src="https://github.com/user-attachments/assets/5537f3cb-0f43-4761-9b1c-cd7066412819" />
 
 
 
 ## C Program to execute Linux system commands using Linux API system calls exec() , exit() , wait() family
+```
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+int main() {
+    pid_t pid = fork();
+    if (pid < 0) {
+        perror("Fork failed");
+        exit(EXIT_FAILURE);
+    } else if (pid == 0) {
+        printf("This is the child process. Executing 'ls' command.\n");
+        execl("/bin/ls", "ls", "-l", NULL); // Lists files in long format
+        perror("execl failed");
+        exit(EXIT_FAILURE);
+    } else {
+        int status;
+        waitpid(pid, &status, 0); // Wait for the child to finish
+        if (WIFEXITED(status)) {
+            printf("Child process exited with status %d.\n", WEXITSTATUS(status));
+        } else {
+            printf("Child process did not exit normally.\n");
+        }
+        printf("Parent process is done.\n");
+    }
+    return 0;
+}
+```
+## OUTPUT
+<img width="1037" height="241" alt="image" src="https://github.com/user-attachments/assets/79e009ac-6491-4b55-85ca-7891e118b227" />
 
 
 
@@ -70,10 +148,6 @@ Test the C Program for the desired output.
 
 
 
-
-
-
-##OUTPUT