diff --git a/README.md b/README.md
index adc4e3f..f3a0328 100644
--- a/README.md
+++ b/README.md
@@ -90,31 +90,31 @@ Options:
 ```
 
 ### [network-graph.js](./scripts/network-graph.js)
-**RAM:** 3.80 GB
+**RAM:** 3.85 GB
 
 Scan the network for devices and display as an ASCII tree.
 ```
-[home ~/]> run /scripts/network-graph.js -h
-Running script with 1 thread(s), pid 138 and args: ["-h"].
+[home ~/]> run /scripts/network-graph.js --help
+Running script with 1 thread(s), pid 138 and args: ["--help"].
 /scripts/network-graph.js: 
 
 Scan the network for devices and display as an ASCII tree:
+ home
   ├─ n00dles (ROOTED)
-  |    └─ max-hardware (80|1)
-  |        └─ neo-net (50|1)
+  |   └─ max-hardware (80|1)
+  |       └─ neo-net (50|1)
   ├─ foodnstuff (ROOTED)
   └─ sigma-cosmetics (ROOTED)
 
-Usage:	run network-graph.js
-	run network-graph.js [OPTIONS] TARGET
+Usage:	run network-graph.js [OPTIONS] 
 	run network-graph.js --help
 
-	TARGET			 Starting point to scan from, defaults to home
-
 Options:
-	-d --depth=num		 Depth to scan for devices to, defaults to 3
-	-v --verbose		 Displays "ROOTED" or the required hack level & ports: (level|port)
-	-h --help		 Display help message
+	-d --depth		 Depth to scan to, defaults to 3
+	-f --filter		 Display path to single device
+	-s --start		 Point to start scan from, defaults to current machine
+	-v --verbose		 Displays the required hack level & ports needed to root: (level|port)
+	-h --help		 Display this help message
 ```
 
 ### [node-manager.js](./scripts/node-manager.js)
diff --git a/scripts/lib/arg-parser.js b/scripts/lib/arg-parser.js
new file mode 100644
index 0000000..b58eaf0
--- /dev/null
+++ b/scripts/lib/arg-parser.js
@@ -0,0 +1,91 @@
+export class ArgError extends Error {}
+
+export class ArgParser {
+	/**
+	 * Create a unix-like argument parser to extract flags from the argument list. Can also create help messages.
+	 * @param name {string} - Script name
+	 * @param desc {string} - Help text desciption
+	 * @param examples {string[]} - Help text examples
+	 * @param argList {name: string, desc: string, flags: string[], type: string, default: any}[] - Array of CLI arguments
+	 */
+	constructor(name, desc, examples, argList) {
+		this.name = name ?? 'example.js';
+		this.description = desc ?? 'Example description';
+		this.examples = [
+			...examples,
+			`[OPTIONS] ${argList.filter(arg => !arg.flags).map(arg => arg.name.toUpperCase())}`,
+			'--help'
+		];
+		this.argList = [
+			...argList,
+			{name: 'help', desc: 'Display this help message', flags: ['-h', '--help'], type: 'bool'}
+		];
+	}
+
+	/**
+	 * Parse an array into an arguments dictionary using the configuration.
+	 * @param args {string[]} - Array of arguments to be parsed
+	 * @returns {object} - Dictionary of arguments with defaults applied
+	 */
+	parse(args) {
+		// Parse arguments
+		const queue = [...args], extra = [];
+		const parsed = this.argList.reduce((acc, arg) => ({...acc, [arg.name]: arg.default ?? (arg.type == 'bool' ? false : null)}), {});
+		// Flags
+		while(queue.length) {
+			let parse = queue.splice(0, 1)[0];
+			if(parse[0] == '-') {
+				// Check combined flags
+				if(parse[1] != '-' && parse.length > 2) {
+					parse = `-${parse[1]}`;
+					queue = parse.substring(1).split('').map(a => `-${a}`).concat(queue);
+				}
+				// Find & add flag
+				const arg = this.argList.find(arg => arg.flags && arg.flags.includes(parse));
+				if(arg == null) throw new ArgError(`Unknown option: ${parse}`);
+				const value = arg.type == 'bool' ? true : parse.split('=')[1] || queue.splice(queue.findIndex(q => q[0] != '-'), 1)[0];
+				if(value == null) throw new ArgError(`Option missing value: ${arg.name}`);
+				parsed[arg.name] = value;
+			} else { 
+				// Save for required parsing
+				extra.push(parse);
+			}
+		}
+		// Arguments
+		this.argList.filter(arg => !arg.flags).forEach(arg => {
+			if(!extra.length) throw new ArgError(`Argument missing: ${arg.name}`);
+			parsed[arg.name] = extra.splice(0, 1)[0];
+		});
+		// Extras
+		if(extra.length) parsed['extra'] = extra;
+		if(parsed['help']) throw new ArgError();
+		return parsed;
+	}
+
+	/**
+	 * Create help message from the provided description, examples & argument list.
+	 * @param message {string} - Message to display, defaults to the description
+	 * @returns {string} - Help message 
+	 */
+	help(msg) {
+		// Description
+		let message = '\n\n' + (msg ? msg : this.description);
+		// Usage
+		if(this.examples.length) message += '\n\nUsage:\t' + this.examples.map(ex => `run ${this.name} ${ex}`).join('\n\t');
+		// Arguments
+		const req = this.argList.filter(a => !a.flags);
+		if(req.length) message += '\n\n\t' + req.map(arg => {
+			const padding = 3 - ~~(arg.name.length / 8);
+			return `${arg.name.toUpperCase()}${Array(padding).fill('\t').join('')} ${arg.desc}`;
+		}).join('\n\t');
+		// Flags
+		const opts = this.argList.filter(a => a.flags);
+		if(opts.length) message += '\n\nOptions:\n\t' + opts.map(a => {
+			const flgs = a.flags.join(' ');
+			const padding = 3 - ~~(flgs.length / 8);
+			return `${flgs}${Array(padding).fill('\t').join('')} ${a.desc}`;
+		}).join('\n\t');
+		// Print final message
+		return `${message}\n\n`;
+	}
+}
diff --git a/scripts/network-graph.js b/scripts/network-graph.js
index 5e2342d..dcec446 100644
--- a/scripts/network-graph.js
+++ b/scripts/network-graph.js
@@ -1,122 +1,71 @@
-class ArgParser {
-	/**
-	 * Create a unix-like argument parser to extract flags from the argument list. Can also create help messages.
-	 * @param opts - {examples: string[], arguments: {key: string, alias: string, type: string, optional: boolean, desc: string}[], desc: string}
-	 */
-	constructor(opts) {
-		this.examples = opts.examples ?? [];
-		this.arguments = opts.args ?? [];
-		this.description = opts.desc;
-	}
-
-	/**
-	 * Parse the list for arguments & create a dictionary.
-	 * @param args {any[]} - Array of arguments
-	 * @returns Dictionary of matched flags + unmatched args under 'extra'
-	 */
-	parse(args) {
-		const req = this.arguments.filter(a => !a.optional && !a.skip);
-		const queue = [...args], parsed = {}, extra = [];
-		for(let i = 0; i < queue.length; i++) {
-			if(queue[i][0] != '-') {
-				extra.push(queue[i]);
-				continue;
-			}
-			let value = null, parse = queue[i].slice(queue[i][1] == '-' ? 2 : 1);
-			if(parse.indexOf('=')) {
-				const split = parse.split('=');
-				parse = split[0];
-				value = split[1];
-			}
-			let arg = this.arguments.find(a => a.key == parse) ?? this.arguments.find(a => a.alias == parse);
-			if(!arg) {
-				extra.push(queue[i]);
-				continue;
-			}
-			if(!value) {
-				value = arg.type == 'bool' ? true : queue[i + 1]; 
-				if(arg.type != 'bool') i++;
-			}
-			parsed[arg.key] = value;
-		}
-		req.forEach((a, i) => parsed[a.key] = extra[i]);
-		extra.splice(0, req.length);
-		return {...parsed, extra};
-	}
-
-	/**
-	 * Create a help message of the expected paramters & usage.
-	 * @param msg {String} - Optional message to display with help
-	 */
-	help(msg) {
-		let message = '\n\n';
-		message += msg ? msg : this.description;
-		if(this.examples.length) message += '\n\nUsage:\t' + this.examples.join('\n\t');
-		const required = this.arguments.filter(a => !a.optional);
-		if(required.length) message += '\n\n\t' + required.map(a => {
-			const padding = 3 - ~~(a.key.length / 8);
-			return `${a.key}${Array(padding).fill('\t').join('')} ${a.desc}`;
-		}).join('\n\t');
-		const optional = this.arguments.filter(a => a.optional);
-		if(optional.length) message += '\n\nOptions:\n\t' + optional.map(a => {
-			const flgs = `${a.alias ? `-${a.alias} ` : ''}--${a.key}${a.type && a.type != 'bool' ? `=${a.type}` : ''}`;
-			const padding = 3 - ~~(flgs.length / 8);
-			return `${flgs}${Array(padding).fill('\t').join('')} ${a.desc}`;
-		}).join('\n\t');
-		return `${message}\n\n`;
-	}
-}
+import {ArgError, ArgParser} from './scripts/lib/arg-parser';
 
 export async function main(ns) {
+	// Setup
 	ns.disableLog('ALL');
-
-    // Initilize script arguments
-	const argParser = new ArgParser({
-		desc: 'Scan the network for devices and display as an ASCII tree:\n  ├─ n00dles (ROOTED)\n  |    └─ max-hardware (80|1)\n  |        └─ neo-net (50|1)\n  ├─ foodnstuff (ROOTED)\n  └─ sigma-cosmetics (ROOTED)',
-		examples: [
-			'run network-graph.js',
-			'run network-graph.js [OPTIONS] TARGET',
-			'run network-graph.js --help',
-		],
-		args: [
-			{key: 'TARGET', desc: 'Starting point to scan from, defaults to home'},
-			{key: 'depth', alias: 'd', type: 'num', optional: true, desc: 'Depth to scan for devices to, defaults to 3'},
-            {key: 'verbose', alias: 'v', type: 'bool', optional: true, desc: 'Displays "ROOTED" or the required hack level & ports: (level|port)'},
-			{key: 'help', alias: 'h', type: 'bool', optional: true, desc: 'Display help message'},
-		]
-	});
-	const args = argParser.parse(ns.args);
-    if(args['help']) return ns.tprint(argParser.help());
-    const start = args['TARGET'] || 'home';
-	const mDepth = args['depth'] || 3;
+	const argParser = new ArgParser('network-graph.js', 'Scan the network for devices and display as an ASCII tree:\n home\n  ├─ n00dles (ROOTED)\n  |   └─ max-hardware (80|1)\n  |       └─ neo-net (50|1)\n  ├─ foodnstuff (ROOTED)\n  └─ sigma-cosmetics (ROOTED)', [], [
+		{name: 'depth', desc: 'Depth to scan to, defaults to 3', flags: ['-d', '--depth'], default: Infinity, type: 'num'},
+        {name: 'filter', desc: 'Display path to single device', flags: ['-f', '--filter'], type: 'string'},
+		{name: 'start', desc: 'Point to start scan from, defaults to current machine', flags: ['-s', '--start'], default: ns.getHostname(), type: 'string'},
+		{name: 'verbose', desc: 'Displays the required hack level & ports needed to root: (level|port)', flags: ['-v', '--verbose'], type: 'bool'},
+	]);
+	let args;
+	try {
+		args = argParser.parse(ns.args);
+	} catch(err) {
+		if(err instanceof ArgError) return ns.tprint(argParser.help(err.message));
+		throw err;
+	}
 
 	/**
 	 * Recursively search network & build a tree
 	 * @param host {string} - Point to scan from
 	 * @param depth {number} - Current scanning depth
-	 * @param maxDepth {number} - Depth to scan to
 	 * @param blacklist {String[]} - Devices already discovered
 	 * @returns Dicionary of discovered devices
 	 */
-	function scan(host, depth = 1, maxDepth = mDepth, blacklist = [host]) {
-		if(depth > maxDepth) return {};
+	function scan(host, depth = 1, blacklist = [host]) {
+		if(depth >= args['depth']) return {};
 		const localTargets = ns.scan(host).filter(target => !blacklist.includes(target));
 		blacklist = blacklist.concat(localTargets);
 		return localTargets.reduce((acc, target) => {
 			const info = ns.getServer(target);
-			const verbose = args['verbose'] ? ` (${info.hasAdminRights ? 'ROOTED' : `${info.requiredHackingSkill}|${info.numOpenPortsRequired}`})` : '';
-			const name = `${target}${verbose}`;
-			acc[name] = scan(target, depth + 1, maxDepth, blacklist);
+			const verb = args['verbose'] ? ` (${info.hasAdminRights ? 'ROOTED' : `${info.requiredHackingSkill}|${info.numOpenPortsRequired}`})` : '';
+			const name = `${target}${verb}`;
+			acc[name] = scan(target, depth + 1, blacklist);
 			return acc;
 		}, {});
 	}
 
 	/**
-	 * Iterate tree & print to screen
-	 * @param tree {Object} - Tree to parse
-	 * @param spacer {String} - Spacer text for tree formatting
+	 * Search tree for path to device.
+	 * @param tree {object} - Tree to search
+	 * @param find {string} - Device to search for
+	 * @returns {object} - Path to device
 	 */
-	function render(tree, spacer = '') {
+	function filter(tree, find) {
+		function filter(tree, find, path = []) {
+			return Object.keys(tree).flatMap(n => {
+				if(n.indexOf(find) == 0) return [...path, n];
+				if(Object.keys(n).length) return filter(tree[n], find, [...path, n]);
+				return null;
+			}).filter(p => !!p);
+		}
+		let whitelist = filter(tree, find), acc = {}, next = acc;
+		while(whitelist.length) {
+			const n = whitelist.splice(0, 1);
+			next[n] = {};
+			next = next[n];
+		}
+		return acc;
+	}
+
+	/**
+	 * Iterate tree & print to screen
+	 * @param tree {object} - Tree to parse
+	 * @param spacer {string} - Spacer text for tree formatting
+	 */
+	function render(tree, spacer = ' ') {
 		Object.keys(tree).forEach((key, i, arr) => {
 			const last = i == arr.length - 1;
 			const branch = last ? '└─ ' : '├─ ';
@@ -125,10 +74,14 @@ export async function main(ns) {
 		});
 	}
 
-	const network = scan(start);
-	render(network);
+	// Run
+	let found = scan(args['start'], args['verbose']);
+	if(args['filter']) found = filter(found, args['filter']);
+	ns.tprint(args['start']);
+	render(found);
+	ns.tprint('');
 }
 
 export function autocomplete(data) {
 	return [...data.servers];
-}
+}
\ No newline at end of file