init: init nachos hw01, should pass jenkins os_group_20_hw job but fail on os_group_20_ta job

code/test/shell.c

@@ -0,0 +1,35 @@
+#include "syscall.h"
+
+int
+main()
+{
+    SpaceId newProc;
+    OpenFileId input = ConsoleInput;
+    OpenFileId output = ConsoleOutput;
+    char prompt[2], ch, buffer[60];
+    int i;
+
+    prompt[0] = '-';
+    prompt[1] = '-';
+
+    while( 1 )
+    {
+	Write(prompt, 2, output);
+
+	i = 0;
+	
+	do {
+	
+	    Read(&buffer[i], 1, input); 
+
+	} while( buffer[i++] != '\n' );
+
+	buffer[--i] = '\0';
+
+	if( i > 0 ) {
+		newProc = Exec(buffer);
+		Join(newProc);
+	}
+    }
+}
+