diff --git a/clite/core.js b/clite/core.js
index 3b21942..f619906 100644
--- a/clite/core.js
+++ b/clite/core.js
@@ -1726,6 +1726,7 @@ clite.lib = {
 		}
 		if (s.length > 0)
 			parts.push(s);
+		// TODO: resolve all paths passed as arguments? - catches ~ and * etc
 		return parts;
 	},
 	getFileType:function(fd) {
@@ -1776,7 +1777,7 @@ clite.lib = {
 		return clite.io.types.FT_UNKOWN;
 	},
 	getBuffer:function() {
-		return Object.create({
+		var buff = Object.create({
 			buffer:{
 				data:'',
 				pos:0
@@ -1788,14 +1789,42 @@ clite.lib = {
 				var i = b.indexOf('\n');
 				if (b < 0)
 					return b;
+				this.buffer.pos += i;
 				return b.substring(0,i);
 			},
 			write:function(txt) {
 				this.buffer.data += txt;
 			}
 		});
+		return buff;
 	},
-	exec:function(args,io) {
+	fork:function(io) {
+	},
+	exec:function(path,args,io) {
+		var fd = clite.io.open(path);
+		if (!fd) {
+			clite.term.writeLine('Shell: unknown command: '+args[0]);
+			io.exit(-1);
+			return false;
+		}
+
+		var pid = clite.proc.add(args.join(' '),fd.node.data.content);
+		io.exit = function(v) {
+			clite.shell.exit(pid,v);
+		}
+
+		var r = clite.core.execSafe(function() {
+			var rr = fd.node.data.content(args,Object.create(clite.shell.env),io);
+			if (typeof rr == 'number')
+				io.exit(rr);
+		});
+		if (!r) {
+			clite.term.writeLine('Shell: error in command:'+args[0]);
+			io.exit(-2);
+			return false;
+		}
+		clite.io.close(fd);
+		return true;
 	}
 }
 clite.lib.api = { // this is passed to programs via include('stdlib')
@@ -1804,5 +1833,6 @@ clite.lib.api = { // this is passed to programs via include('stdlib')
 	resolvePath:clite.lib.resolvePath,
 	getFileType:clite.lib.getFileType,
 	strToArgs:clite.lib.strToArgs,
+	fork:clite.lib.fork,
 	exec:clite.lib.exec
 };