diff --git a/Makefile b/Makefile
index d71980a..befe55e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,11 @@
-CC=cc
+CC=gcc
 CLIB=-L/usr/local/lib -llua5.3
 INC=-I/usr/local/include
-BIN=main
+BIN=open_card_table
 DEBUG=-g
 
-open_card_table: main.o oct_networking.o
-	$(CC) -g $(INC) $(CLIB) -o open_card_table main.o oct_networking.o
+open_card_table: main.o oct_networking.o oct_log.o
+	$(CC) -g $(INC) $(CLIB) -o $(BIN) $^
 
 %.o: %.c
 	$(CC) -g $(INC) $(CLIB) -c -o $@ $<
diff --git a/main.c b/main.c
index 85eafbc..e41c4aa 100644
--- a/main.c
+++ b/main.c
@@ -4,6 +4,7 @@
 #include "termbox_render.h"
 #include "oct_termbox_sprite.h"
 #include "oct_networking.h"
+#include "oct_log.h"
 
 #define TB_IMPL
 #include "termbox.h"
@@ -16,7 +17,7 @@
 #define OCT_VERS 5
 #define OCT_INVALID_ARGUMENT 6
 
-#define OCT_LUA_FILENAME_SIZE 128
+#define OCT_MAX_FILENAME_SIZE 1024
 
 #define OCT_VERSION "0.0"
 #define OCT_URL "https://git.thejerks.club/j4nk/open-card-table"
@@ -30,7 +31,7 @@ struct {
 	char port[6]; // max 65535 so 6 bytes needed
 	// Might come in handy later to keep filename
 	// e.g. if I ever want to allow downloading a script from peer
-	char lua_file[OCT_LUA_FILENAME_SIZE];
+	char lua_file[OCT_MAX_FILENAME_SIZE];
 } args;
 
 void usage();
@@ -43,15 +44,19 @@ int main(int argc, char* argv[]) {
 	int process_args_result = process_args(argc, argv);
 	switch (process_args_result) {
 	case OCT_NO_LUA_FILE:
+		// Can't use oct_log as logging is not guaranteed to be init
 		fprintf(stderr, "Error: No lua file given\n\n");
 		usage();
 		return EXIT_FAILURE;
 		break;
 	case OCT_LUA_FILE_NOT_FOUND:
+		// oct_log is init by this time, but don't want PITA bug in case this changes
 		fprintf(stderr, "Error: Could not open file: %s\n", argv[argc-1]);
+		deinitialize_everything();
 		return EXIT_FAILURE;
 		break;
 	case OCT_INVALID_ARGUMENT:
+		// Can't use oct_log as logging is not guaranteed to be init
 		fprintf(stderr, "Error: unknown argument\n");
 		return EXIT_FAILURE;
 		break;
@@ -93,15 +98,23 @@ int process_args(int argc, char* argv[]) {
 
 	// Set args.port to default
 	strncpy(args.port, OCT_DEFAULT_PORT, 6);
+	int log_level = OCT_LOG_LEVEL_ERROR;
+	char log_file[OCT_MAX_FILENAME_SIZE];
+	int log_file_spec = 0;
+	int valid_last_argument = 0;
 
 	for (int i = 1; i < argc; i++) {
 		// argv's are guaranteed to be zero-terminated, so can use
 		// strcmp instead of strncmp
 		if (strcmp(argv[i], "-p") == 0) {
-			if (i != (argc-2)) {
+			if (i+1 < argc) {
 				strncpy(args.port, argv[i+1], 6);
 				i++;
 			}
+			else {
+				fprintf(stderr, "Error: need to specify a port after -p\n");
+				return OCT_INVALID_ARGUMENT;
+			}
 		}
 		else if (strcmp(argv[i], "-h") == 0) {
 			return OCT_HELP;
@@ -109,19 +122,53 @@ int process_args(int argc, char* argv[]) {
 		else if (strcmp(argv[i], "-v") == 0) {
 			return OCT_VERS;
 		}
+		else if (strcmp(argv[i], "-ll") == 0) {
+			if (i+1 < argc) {
+				char* endptr = NULL;
+				log_level = strtoul(argv[i+1], &endptr, 10);
+				if (log_level == 0 && endptr == argv[i+1]) {
+					printf("Error: invalid log level\n");
+					return OCT_INVALID_ARGUMENT;
+				}
+				i++;
+			}
+			else {
+				fprintf(stderr, "Error: need to specify a log level after -ll\n");
+				return OCT_INVALID_ARGUMENT;
+			}
+		}
+		else if (strcmp(argv[i], "-lf") == 0) {
+			if (i+1 < argc) {
+				strncpy(log_file, argv[i+1], OCT_MAX_FILENAME_SIZE);
+				log_file_spec = 1;
+				i++;
+			}
+			else {
+				fprintf(stderr, "Error: need to specify a log file after -lf\n");
+				return OCT_INVALID_ARGUMENT;				
+			}
+		}
 		else {
+			// This is the lua file to run
 			if (i == argc-1) {
+				valid_last_argument = 1;
 				break;
 			}
+			// Invalid argument
 			else {
 				return OCT_INVALID_ARGUMENT;
 			}
 		}
 	}
+	if (!valid_last_argument) {
+		return OCT_NO_LUA_FILE;
+	}
 
-	strncpy(args.lua_file, argv[argc-1], OCT_LUA_FILENAME_SIZE);
+	oct_log_init(log_file_spec ? log_file : NULL, log_level);
+	
+	strncpy(args.lua_file, argv[argc-1], OCT_MAX_FILENAME_SIZE);
+	OCT_LOG_INFO("Running lua file: %s", args.lua_file);
 	
-	// TODO define other cmd line args here
 	return initialize_everything(argv[argc-1]); // lua file should always be last argument
 }
 
@@ -133,20 +180,25 @@ int initialize_everything(char* lua_file) {
 	if (!oct_tb_sprite_list_initialize()) {
 		return 0;
 	}
+	OCT_LOG_INFO("Initialized the sprite list");
 	L = luaL_newstate();
 	if (L == NULL) {
-		fprintf(stderr, "Can't initialize Lua\n");
+		OCT_LOG_ERROR("Can't initialize Lua\n");
 		return 0;
 	}
+	OCT_LOG_INFO("Initialized lua state");
 	luaL_openlibs(L);
 	oct_tb_initialize_lua(L);
-	//if (luaL_dofile(L, lua_file)) return OCT_LUA_FILE_NOT_FOUND;
+	if (luaL_dofile(L, lua_file)) return OCT_LUA_FILE_NOT_FOUND;
+	OCT_LOG_INFO("Begin running oct_init()");
 	lua_getglobal(L, "oct_init");
 	lua_call(L, 0, 1);
 	int type = lua_tointeger(L, -1);
+	OCT_LOG_INFO("Finish running oct_init()");
 	if (type == OCT_TYPE_SERVER) {
+		OCT_LOG_INFO("Lua script is server type");
 		if (!oct_network_server_init(args.port)) {
-			printf("Could not establish a socket on port %s\n", args.port);
+			OCT_LOG_ERROR("Could not establish a socket on port %s\n", args.port);
 			return 0;
 		}
 	}
@@ -162,9 +214,11 @@ int initialize_everything(char* lua_file) {
 }
 
 int deinitialize_everything() {
+	OCT_LOG_INFO("Deinitializing everything");
 	tb_shutdown();
 	lua_close(L);
 	oct_tb_sprite_list_deinitialize();
+	oct_log_deinit();
 	return 1;
 }
 
@@ -174,9 +228,11 @@ void usage() {
 	fprintf(stderr, "\n");
 	fprintf(stderr, "Usage: ./open_card_table [OPTIONS] FILE\n");
 	fprintf(stderr, "\n");
-	fprintf(stderr, "  -p\tPort on which to listen\n");
-	fprintf(stderr, "  -v\tPrint version and exit\n");
-	fprintf(stderr, "  -h\tPrint this message and exit\n");
+	fprintf(stderr, "  -p\t\tPort on which to listen\n");
+	fprintf(stderr, "  -v\t\tPrint version and exit\n");
+	fprintf(stderr, "  -h\t\tPrint this message and exit\n");
+	fprintf(stderr, "  -ll\t\t Set log level: 0=err, 1=warn, 2=info, 3=debug\n");
+	fprintf(stderr, "  -lf\t\t Specify log output file\n");
 	fprintf(stderr, "\n");
 }