diff --git a/cli.js b/cli.js
index d5a826d..546fa23 100644
--- a/cli.js
+++ b/cli.js
@@ -20,9 +20,10 @@ const currentPath = path.normalize(process.cwd());
 let cmdValue = '';
 
 // Check for requirements such as OS version and nginx install.
-// #Roadmap: Add ability to satisfy any possible requirements.
+//TODO: Add ability to satisfy any possible requirements.
+//TODO: Ask for requirements only when needed (exclude for `up list`)
 
-//requirements();
+requirements();
 // Comment in development and uncomment this line in production.
 
 program
diff --git a/package-lock.json b/package-lock.json
index efd712a..b1fd6fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,9 @@
 {
 	"name": "up-serve",
-	"version": "0.2.5",
+	"version": "0.3.0",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
-		"acorn": {
-			"version": "5.2.1",
-			"resolved": "https://registry.npmjs.org/acorn/-/acorn-5.2.1.tgz",
-			"integrity": "sha512-jG0u7c4Ly+3QkkW18V+NRDN+4bWHdln30NL1ZL2AvFZZmQe/BfopYCtghCKKVBUSetZ4QKcyA0pY6/4Gw8Pv8w==",
-			"dev": true
-		},
 		"acorn-jsx": {
 			"version": "3.0.1",
 			"resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
@@ -95,6 +89,14 @@
 			"integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
 			"dev": true
 		},
+		"async": {
+			"version": "2.6.0",
+			"resolved": "https://registry.npmjs.org/async/-/async-2.6.0.tgz",
+			"integrity": "sha512-xAfGg1/NTLBBKlHFmnd7PlmUW9KhVQIUuSrYem9xzFUZy13ScvtyGGejaae9iAVRiRq9+Cx7DPFaAAhCpyxyPw==",
+			"requires": {
+				"lodash": "4.17.4"
+			}
+		},
 		"babel-code-frame": {
 			"version": "6.26.0",
 			"resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
@@ -294,15 +296,10 @@
 				"rimraf": "2.6.2"
 			}
 		},
-		"doctrine": {
-			"version": "2.0.0",
-			"resolved": "https://registry.npmjs.org/doctrine/-/doctrine-2.0.0.tgz",
-			"integrity": "sha1-xz2NKQnSIpHhoAejlYBNqLZl/mM=",
-			"dev": true,
-			"requires": {
-				"esutils": "2.0.2",
-				"isarray": "1.0.0"
-			}
+		"duplexer": {
+			"version": "0.1.1",
+			"resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
+			"integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E="
 		},
 		"escape-string-regexp": {
 			"version": "1.0.5",
@@ -310,9 +307,9 @@
 			"integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
 		},
 		"eslint": {
-			"version": "4.10.0",
-			"resolved": "https://registry.npmjs.org/eslint/-/eslint-4.10.0.tgz",
-			"integrity": "sha512-MMVl8P/dYUFZEvolL8PYt7qc5LNdS2lwheq9BYa5Y07FblhcZqFyaUqlS8TW5QITGex21tV4Lk0a3fK8lsJIkA==",
+			"version": "4.19.1",
+			"resolved": "https://registry.npmjs.org/eslint/-/eslint-4.19.1.tgz",
+			"integrity": "sha512-bT3/1x1EbZB7phzYu7vCr1v3ONuzDtX8WjuM9c0iYxe+cq+pwcKEoQjl7zd3RpC6YOLgnSy3cTN58M2jcoPDIQ==",
 			"dev": true,
 			"requires": {
 				"ajv": "5.3.0",
@@ -321,22 +318,22 @@
 				"concat-stream": "1.6.0",
 				"cross-spawn": "5.1.0",
 				"debug": "3.1.0",
-				"doctrine": "2.0.0",
+				"doctrine": "2.1.0",
 				"eslint-scope": "3.7.1",
-				"espree": "3.5.1",
+				"eslint-visitor-keys": "1.0.0",
+				"espree": "3.5.4",
 				"esquery": "1.0.0",
-				"estraverse": "4.2.0",
 				"esutils": "2.0.2",
 				"file-entry-cache": "2.0.0",
 				"functional-red-black-tree": "1.0.1",
 				"glob": "7.1.2",
-				"globals": "9.18.0",
+				"globals": "11.4.0",
 				"ignore": "3.3.7",
 				"imurmurhash": "0.1.4",
 				"inquirer": "3.3.0",
 				"is-resolvable": "1.0.0",
 				"js-yaml": "3.10.0",
-				"json-stable-stringify": "1.0.1",
+				"json-stable-stringify-without-jsonify": "1.0.1",
 				"levn": "0.3.0",
 				"lodash": "4.17.4",
 				"minimatch": "3.0.4",
@@ -346,12 +343,46 @@
 				"path-is-inside": "1.0.2",
 				"pluralize": "7.0.0",
 				"progress": "2.0.0",
+				"regexpp": "1.1.0",
 				"require-uncached": "1.0.3",
 				"semver": "5.4.1",
 				"strip-ansi": "4.0.0",
 				"strip-json-comments": "2.0.1",
 				"table": "4.0.2",
 				"text-table": "0.2.0"
+			},
+			"dependencies": {
+				"acorn": {
+					"version": "5.5.3",
+					"resolved": "https://registry.npmjs.org/acorn/-/acorn-5.5.3.tgz",
+					"integrity": "sha512-jd5MkIUlbbmb07nXH0DT3y7rDVtkzDi4XZOUVWAer8ajmF/DTSSbl5oNFyDOl/OXA33Bl79+ypHhl2pN20VeOQ==",
+					"dev": true
+				},
+				"doctrine": {
+					"version": "2.1.0",
+					"resolved": "https://registry.npmjs.org/doctrine/-/doctrine-2.1.0.tgz",
+					"integrity": "sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==",
+					"dev": true,
+					"requires": {
+						"esutils": "2.0.2"
+					}
+				},
+				"espree": {
+					"version": "3.5.4",
+					"resolved": "https://registry.npmjs.org/espree/-/espree-3.5.4.tgz",
+					"integrity": "sha512-yAcIQxtmMiB/jL32dzEp2enBeidsB7xWPLNiw3IIkpVds1P+h7qF9YwJq1yUNzp2OKXgAprs4F61ih66UsoD1A==",
+					"dev": true,
+					"requires": {
+						"acorn": "5.5.3",
+						"acorn-jsx": "3.0.1"
+					}
+				},
+				"globals": {
+					"version": "11.4.0",
+					"resolved": "https://registry.npmjs.org/globals/-/globals-11.4.0.tgz",
+					"integrity": "sha512-Dyzmifil8n/TmSqYDEXbm+C8yitzJQqQIlJQLNRMwa+BOUJpRC19pyVeN12JAjt61xonvXjtff+hJruTRXn5HA==",
+					"dev": true
+				}
 			}
 		},
 		"eslint-scope": {
@@ -364,15 +395,11 @@
 				"estraverse": "4.2.0"
 			}
 		},
-		"espree": {
-			"version": "3.5.1",
-			"resolved": "https://registry.npmjs.org/espree/-/espree-3.5.1.tgz",
-			"integrity": "sha1-DJiLirRttTEAoZVK5LqZXd0n2H4=",
-			"dev": true,
-			"requires": {
-				"acorn": "5.2.1",
-				"acorn-jsx": "3.0.1"
-			}
+		"eslint-visitor-keys": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz",
+			"integrity": "sha512-qzm/XxIbxm/FHyH341ZrbnMUpe+5Bocte9xkmFMzPMjRaZMcXww+MpBptFvtU+79L362nqiLhekCxCxDPaUMBQ==",
+			"dev": true
 		},
 		"esprima": {
 			"version": "4.0.0",
@@ -411,6 +438,20 @@
 			"integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
 			"dev": true
 		},
+		"event-stream": {
+			"version": "3.3.4",
+			"resolved": "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz",
+			"integrity": "sha1-SrTJoPWlTbkzi0w02Gv86PSzVXE=",
+			"requires": {
+				"duplexer": "0.1.1",
+				"from": "0.1.7",
+				"map-stream": "0.1.0",
+				"pause-stream": "0.0.11",
+				"split": "0.3.3",
+				"stream-combiner": "0.0.4",
+				"through": "2.3.8"
+			}
+		},
 		"external-editor": {
 			"version": "2.0.5",
 			"resolved": "https://registry.npmjs.org/external-editor/-/external-editor-2.0.5.tgz",
@@ -471,6 +512,11 @@
 				"write": "0.2.1"
 			}
 		},
+		"from": {
+			"version": "0.1.7",
+			"resolved": "https://registry.npmjs.org/from/-/from-0.1.7.tgz",
+			"integrity": "sha1-g8YK/Fi5xWmXAH7Rp2izqzA6RP4="
+		},
 		"fs-extra": {
 			"version": "4.0.2",
 			"resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-4.0.2.tgz",
@@ -505,12 +551,6 @@
 				"path-is-absolute": "1.0.1"
 			}
 		},
-		"globals": {
-			"version": "9.18.0",
-			"resolved": "https://registry.npmjs.org/globals/-/globals-9.18.0.tgz",
-			"integrity": "sha512-S0nG3CLEQiY/ILxqtztTWH/3iRRdyBLw6KMDxnKMchrtbj2OFmehVh0WUCfW3DUrIgx/qFrJPICrq4Z4sTR9UQ==",
-			"dev": true
-		},
 		"globby": {
 			"version": "5.0.0",
 			"resolved": "https://registry.npmjs.org/globby/-/globby-5.0.0.tgz",
@@ -688,14 +728,11 @@
 			"integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
 			"dev": true
 		},
-		"json-stable-stringify": {
+		"json-stable-stringify-without-jsonify": {
 			"version": "1.0.1",
-			"resolved": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz",
-			"integrity": "sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=",
-			"dev": true,
-			"requires": {
-				"jsonify": "0.0.0"
-			}
+			"resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
+			"integrity": "sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=",
+			"dev": true
 		},
 		"jsonfile": {
 			"version": "4.0.0",
@@ -705,12 +742,6 @@
 				"graceful-fs": "4.1.11"
 			}
 		},
-		"jsonify": {
-			"version": "0.0.0",
-			"resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
-			"integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=",
-			"dev": true
-		},
 		"levn": {
 			"version": "0.3.0",
 			"resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -724,8 +755,12 @@
 		"lodash": {
 			"version": "4.17.4",
 			"resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-			"integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
-			"dev": true
+			"integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+		},
+		"lodash.assign": {
+			"version": "4.2.0",
+			"resolved": "https://registry.npmjs.org/lodash.assign/-/lodash.assign-4.2.0.tgz",
+			"integrity": "sha1-DZnzzNem0mHRm9rrkkUAXShYCOc="
 		},
 		"lru-cache": {
 			"version": "4.1.1",
@@ -737,12 +772,22 @@
 				"yallist": "2.1.2"
 			}
 		},
+		"map-stream": {
+			"version": "0.1.0",
+			"resolved": "https://registry.npmjs.org/map-stream/-/map-stream-0.1.0.tgz",
+			"integrity": "sha1-5WqpTEyAVaFkBKBnS3jyFffI4ZQ="
+		},
 		"mimic-fn": {
 			"version": "1.1.0",
 			"resolved": "https://registry.npmjs.org/mimic-fn/-/mimic-fn-1.1.0.tgz",
 			"integrity": "sha1-5md4PZLonb00KBi1IwudYqZyrRg=",
 			"dev": true
 		},
+		"mingo": {
+			"version": "1.3.3",
+			"resolved": "https://registry.npmjs.org/mingo/-/mingo-1.3.3.tgz",
+			"integrity": "sha1-aSLE0Ufvx3GgFCWixMj3eER4xUY="
+		},
 		"minimatch": {
 			"version": "3.0.4",
 			"resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
@@ -843,6 +888,14 @@
 			"resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.5.tgz",
 			"integrity": "sha1-PBrfhx6pzWyUMbbqK9dKD/BVxME="
 		},
+		"pause-stream": {
+			"version": "0.0.11",
+			"resolved": "https://registry.npmjs.org/pause-stream/-/pause-stream-0.0.11.tgz",
+			"integrity": "sha1-/lo0sMvOErWqaitAPuLnO2AvFEU=",
+			"requires": {
+				"through": "2.3.8"
+			}
+		},
 		"pify": {
 			"version": "2.3.0",
 			"resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
@@ -938,6 +991,12 @@
 				"resolve": "1.5.0"
 			}
 		},
+		"regexpp": {
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/regexpp/-/regexpp-1.1.0.tgz",
+			"integrity": "sha512-LOPw8FpgdQF9etWMaAfG/WRthIdXJGYp4mJ2Jgn/2lpkbod9jPn0t9UqN7AxBOKNfzRbYyVfgc7Vk4t/MpnXgw==",
+			"dev": true
+		},
 		"require-uncached": {
 			"version": "1.0.3",
 			"resolved": "https://registry.npmjs.org/require-uncached/-/require-uncached-1.0.3.tgz",
@@ -1011,6 +1070,17 @@
 			"integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
 			"dev": true
 		},
+		"save": {
+			"version": "2.3.2",
+			"resolved": "https://registry.npmjs.org/save/-/save-2.3.2.tgz",
+			"integrity": "sha1-hZJnS1VlzE4SvG3dnLCfgo4+z30=",
+			"requires": {
+				"async": "2.6.0",
+				"event-stream": "3.3.4",
+				"lodash.assign": "4.2.0",
+				"mingo": "1.3.3"
+			}
+		},
 		"semver": {
 			"version": "5.4.1",
 			"resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
@@ -1057,12 +1127,28 @@
 				"is-fullwidth-code-point": "2.0.0"
 			}
 		},
+		"split": {
+			"version": "0.3.3",
+			"resolved": "https://registry.npmjs.org/split/-/split-0.3.3.tgz",
+			"integrity": "sha1-zQ7qXmOiEd//frDwkcQTPi0N0o8=",
+			"requires": {
+				"through": "2.3.8"
+			}
+		},
 		"sprintf-js": {
 			"version": "1.0.3",
 			"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
 			"integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
 			"dev": true
 		},
+		"stream-combiner": {
+			"version": "0.0.4",
+			"resolved": "https://registry.npmjs.org/stream-combiner/-/stream-combiner-0.0.4.tgz",
+			"integrity": "sha1-TV5DPBhSYd3mI8o/RMWGvPXErRQ=",
+			"requires": {
+				"duplexer": "0.1.1"
+			}
+		},
 		"string-width": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -1136,8 +1222,7 @@
 		"through": {
 			"version": "2.3.8",
 			"resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
-			"integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
-			"dev": true
+			"integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
 		},
 		"tmp": {
 			"version": "0.0.33",
diff --git a/package.json b/package.json
index b07e1ab..1503a0f 100644
--- a/package.json
+++ b/package.json
@@ -36,9 +36,10 @@
 		"fs-extra": "^4.0.2",
 		"prettyjson": "^1.2.1",
 		"readline-sync": "^1.4.7",
+		"save": "^2.3.2",
 		"shelljs": "^0.7.8"
 	},
 	"devDependencies": {
-		"eslint": "^4.10.0"
+		"eslint": "^4.19.1"
 	}
 }