Merge pull request #1 from ImpulseVersionControl/master

Make the simple shell better

sys/shell.c

@@ -1,5 +1,6 @@
 /* Simple shell
- * September 18, 2010 */
+ * September 18, 2010
+ * November 21, 2024 */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -8,14 +9,27 @@
 
 int main(int argc, char *argv[]) {
     char x[256], y[256], z[256];
+	char host[60];
+	char *user = getlogin();
+
+	if (!user) {
+		fprintf(stderr, "Could not get current user\n");
+		return 1;
+	}
+
+	gethostname(host, sizeof(host));
+
     while (1) {
-        getcwd(y, sizeof(y));
-        printf("%s$ ", y);
+        printf("[%s@%s]$ ", user, host);
         fgets(x, sizeof(x), stdin);
         if (x[0] == 'c' && x[1] == 'd' && x[2] == ' ') {
             sscanf(x, "cd %s", z);
             chdir(z);
         }
+		else if (x[0] == 'p' && x[1] == 'w' && x[2] == 'd' && x[3] == '\n') {
+			getcwd(y, sizeof(y));
+			printf("%s\n", y);
+		}
         else if (strcmp(x, "exit\n") == 0) break;
         else system(x);
     }