exec

shell2.c

@@ -1,33 +1,34 @@
-#include <stdlib.h>
 #include <stdio.h>
-#include <unistd.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
-#include <readline/readline.h>
+#include <unistd.h>
+#include <sys/wait.h>
 #include <readline/history.h>
+#include <readline/readline.h>
 
 #define clear() printf("\033[H\033[J")
 
 void init_shell() {
-    clear();
+  clear();
 
-    printf("\n\n\n\n******************************************");
-    printf("\n\n\n\t****MY SHELL****");
-    printf("\n\n\t-USE AT YOUR OWN RISK-");
-    printf("\n\n\n******************************************");
+  printf("\n\n\n\n******************************************");
+  printf("\n\n\n\t****MY SHELL****");
+  printf("\n\n\t-USE AT YOUR OWN RISK-");
+  printf("\n\n\n******************************************");
 
-    char* username = getenv("USER");
-    printf("\n\nUSER is: @%s\n", username);
-    sleep(1);
+  char *username = getenv("USER");
+  printf("\n\nUSER is: @%s\n", username);
+  sleep(1);
 
-    clear();
+  clear();
 }
 
-int take_input(char* str) {
-  char* buf;
+int take_input(char *str) {
+  char *buf;
 
   buf = readline("\n>>> ");
-  if(strlen(buf) != 0) {
+  if (strlen(buf) != 0) {
     add_history(buf);
     strcpy(str, buf);
     return 0;
@@ -42,17 +43,33 @@ void print_dir() {
   printf("\nDir: %s", cwd);
 }
 
-def execute(char** parsed) {
+void execute_args(char **parsed) {
   pid_t pid = fork();
 
   if (pid == -1) {
     printf("\nFailed forking child..");
     return;
   } else if (pid == 0) {
-
+    if (execvp(parsed[0], parsed) < 0) {
+      printf("\nCould not execute command..");
+    }
+    exit(0);
+  } else {
+    wait(NULL);
+    return;
   }
 }
 
+void open_help() {
+  puts("\n***Welcome to my shell help"
+       "\n-Use the shell at your own risk..."
+       "\nList of commands support:"
+       "\n>cd"
+       "\n>ls"
+       "\n>exit"
+       "\n>all other general commands available in UNIX shell");
+}
+
 int main() {
   init_shell();
 }