Step 6: MoreShell

MoreShell.c

@@ -0,0 +1,41 @@
+#include "cse356header.h"
+#include "readline.c"
+#define MAX_ARGS 50
+const char * delim_no_pipe = " \t\n";
+
+
+void parse_argv(char *buffer, char *argv[])
+{
+	char *cp = buffer;
+	for(int argc = 0; argc < MAX_ARGS; argc++) {
+		if((argv[argc] = strtok(cp, delim_no_pipe)) == NULL)
+			break;
+		cp = NULL;
+	}
+}
+
+
+main()
+{
+	while (true) {
+		int argc;
+		char *argv[MAX_ARGS];
+
+		write(1, "$ ", 2);
+		char buffer[256];
+		readline(0, buffer, 255);
+		buffer[strlen(buffer) - 1] = '\0'; // get rid of cr
+		parse_argv(buffer, argv);
+		if(strcmp("exit", argv[0]) == 0) exit(0);
+		pid_t forkpid;
+		forkpid = fork();
+
+		if(forkpid == 0) { // child process 
+			execvp(argv[0], argv);
+			exit(0);
+		}
+		wait(NULL);
+
+	}
+	exit(0);
+}

makefile

@@ -1,4 +1,4 @@
-all: MyCopy ForkCopy PipeCopy timer MyShell
+all: MyCopy ForkCopy PipeCopy timer MyShell MoreShell
 clear:
 	rm *.o
 MyCopy: MyCopy.o
@@ -21,3 +21,7 @@ MyShell: MyShell.o
 	g++ MyShell.o -o MyShell
 MyShell.o: 
 	g++ -c MyShell.c
+MoreShell: MoreShell.o
+	g++ MoreShell.o -o MoreShell
+MoreShell.o:
+	g++ -c MoreShell.c