diff --git a/clite/commands.js b/clite/commands.js
index fa333e8..507c736 100644
--- a/clite/commands.js
+++ b/clite/commands.js
@@ -495,7 +495,7 @@ clite.commands.load('rm',function(args,env,io) {
 	function help() {
 		stdio.printf(`
 rm - remove files or directories
-Usage: file [OPTION] <FILE>
+Usage: rm [OPTION] <FILE>
 
 Options:
 -r	Remove directories and their contents recusively
@@ -588,6 +588,86 @@ Options:
 	return removeFile(file);
 });
 
+clite.commands.load('mkdir',function(args,env,io) {
+	var short = null;
+	var file = null;
+	var stdio = io.include('stdio');
+	var stdlib = io.include('stdlib');
+	var clite = io.include('clite');
+	var recurse = false;
+	function help() {
+		stdio.printf(`
+mkdir - remove files or directories
+Usage: mkdir [OPTION] <DIRECTORY>
+
+Options:
+-p	Make the full path, not just the final directory
+-?	Print this help information
+		`);
+	}
+
+	for (var i=1; i<args.length; i++) {
+		if (args[i][0] == '-') {
+			for (var j=1; j<args[i].length; j++) {
+				switch (args[i][j]) {
+				case 'p':
+					recurse = true;
+					break;
+				case '?':
+					help();
+					return 0;
+					break;
+				default:
+					stdio.fprintf(io.stderr,'unknown argument: -%c\n',args[i][j]);
+				}
+			}
+		}else if (file == null) {
+			short = args[i];
+			file = clite.resolvePath(args[i],false);
+		}else{
+			stdio.fprintf(io.stderr,'unknown argument: %s\n',args[i]);
+		}
+	}
+
+	if (file == null) {
+		stdio.fprintf(io.stderr,'no path specified');
+		return 1;
+	}
+
+	var st = stdio.stat(file);
+	if (st) {
+		stdio.fprintf(io.stderr,'already exists: %s\n',short);
+		return 1;
+	}
+
+	if (!stdio.mkdir(file)) {
+		if (!recurse) {
+			stdio.fprintf(io.stderr,'persmission denied: %s\n',short);
+			return 1;
+		}
+
+		var parts = file.split('/');
+		var path = '';
+		for (var i=0; i<parts.length; i++) {
+			path += '/'+parts[i];
+			st = stdio.stat(path);
+			if (st) {
+				if (st.type != stdio.types.FT_DIR) {
+					stdio.fprintf(io.stderr,'permission denied: %s',path);
+					return 1;
+				}
+				continue;
+			}
+			if (!stdio.mkdir(path)) {
+				stdio.fprintf(io.stderr,'permission denied: %s',path);
+				return 1;
+			}
+		}
+	}
+
+	return 0;
+});
+
 clite.commands.load('file',function(args,env,io) {
 	var short = '';
 	var file = null;
@@ -683,6 +763,7 @@ clite.commands.load('reboot',function(args,env,io) {
 	function help() {
 		stdio.printf(`
 reboot - reboot the system, forcing reload of all code
+Usage: reboot [OPTION]
 
 Options:
 -?	Print this help information
@@ -727,6 +808,7 @@ clite.commands.load('uname',function(args,env,io) {
 	function help() {
 		stdio.printf(`
 uname - print system information
+Usage: uname [OPTION]
 
 Options:
 -a	All, equivalent to -mnrsv
diff --git a/clite/core.js b/clite/core.js
index ef9a406..f756224 100644
--- a/clite/core.js
+++ b/clite/core.js
@@ -1184,6 +1184,24 @@ clite.io = {
 		clite.io.isatty = function(pid,fd) {
 			return fd.node.data.istty;
 		}
+		clite.io.mkdir = function(pid,path,mode) {
+			if (typeof mode !== 'string' || mode.length < 9 || mode.length > 10)
+				mode = 'drwxr-xr-x';
+			if (mode.length == 9)
+				mode = 'd'+mode;
+			if (mode[0] != 'd')
+				mode = 'd'+mode.substring(0,9);
+			var uid = clite.proc.getUID(pid);
+			var r = vfsapi.mkDir(uid,path);
+			if (!r)
+				return false;
+			var n = vfsapi.getNode(uid,path);
+			if (!n)
+				return false;
+			n.perms = mode;
+			return true;
+		}
+
 		clite.io.vfprintf = function(pid,fd,fmt,args) {
 			var str = '';
 			var parts = fmt.replace(/%%/g,'&percnt;').split('%');
@@ -1576,6 +1594,7 @@ clite.io = {
 	chmod:null,
 	fchmod:null,
 	isatty:null,
+	mkdir:null,
 	vfprintf:null
 };
 
diff --git a/clite/libstdio.js b/clite/libstdio.js
index b3613f4..e543d60 100644
--- a/clite/libstdio.js
+++ b/clite/libstdio.js
@@ -74,6 +74,10 @@ return Object.create({
 		return clite.io.isatty(io.pid,fd);
 	},
 
+	mkdir:function(path,mode) {
+		return clite.io.mkdir(io.pid,path,mode);
+	},
+
 	vfprintf:function(fd,fmt,args) {
 		return clite.io.vfprintf(io.pid,fd,fmt,args);
 	},