A00227290_tarea1

labs/03/myTerminal.c

@@ -0,0 +1,59 @@
+/*
+Noé Benjamín Rosales Medina
+A00227290
+Tarea 1.5 Simple Terminal (fork/exec)
+19/10/2023
+*/
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(){
+        // Variables declaration
+        char command[100];
+        char stop[] = "stop";
+        char ls[] = "ls";
+        char date[] = "date";
+        char pwd[] = "pwd";
+        pid_t pid;
+
+        while(strcmp(command, stop) != 0){
+                printf("nbrm> ");
+                scanf("%s", command);
+                if(strcmp(command, date) == 0 || strcmp(command, ls) == 0 || strcmp(command, pwd) == 0){
+                        // Fork a child process
+                        pid = fork();
+                        if(pid < 0){
+                                // Error ocurred
+                                fprintf(stderr, "Fork Failed");
+                                exit(-1);
+                        }
+                        else if (pid == 0 && strcmp(command, ls) == 0){
+                                // Child process for ls
+                                execlp("/bin/ls","ls",NULL);
+                        }
+                        else if (pid == 0 && strcmp(command, date) == 0){
+                                // Child process for date
+                                execlp("/bin/date","date",NULL);
+                        }
+                        else if (pid == 0 && strcmp(command, pwd) == 0){
+                                // Child process for pwd
+                                execlp("/bin/pwd","pwd",NULL);
+                        }
+                        else{
+                                // Parent waits for the child to complete its process
+                                wait(NULL);
+                        }
+                }
+                else if (strcmp(command, stop) != 0){
+                        // Any other command
+                        printf("nbrm> Wrong command, stop to exit the terminal\n");
+                }
+        }
+        return 0;
+}