diff --git a/index.js b/index.js
index 8635050..aac70ff 100644
--- a/index.js
+++ b/index.js
@@ -12,14 +12,99 @@ function getFiles() {
 }
 
 function processCommand(command) {
-    switch (command) {
+    let words = command.split(' ')
+    switch (words[0]) {
         case 'exit':
             process.exit(0);
             break;
+        case 'show':
+            console.log(showTODOS());
+            break;
+        case 'important':
+            console.log(showImportant());
+            break;
+        case 'user':
+            console.log(showNames(words[1].toLowerCase()));
+            break;
+        case 'sort':
+            switch (words[1]) {
+                case 'importance':
+                    console.log(sortImportance());
+                    break;
+                case 'user':
+                    console.log(sortByUser());
+                    break;
+                case 'date':
+                    console.log(sortByDate());
+                    break;
+            }
+            break;
         default:
             console.log('wrong command');
             break;
     }
 }
 
+function parseLines() {
+    let parsedFiles = [];
+    let lines = [];
+    for (let i = 0; i < files.length; i++) {
+        parsedFiles.push(files[i].split("\r\n"));
+        lines = lines.concat(parsedFiles[i]);
+    }
+    return lines;
+}
+
+function showTODOS() {
+    let toDoLines = [];
+    let lines = parseLines();
+    lines.forEach(line => {let index = line.indexOf("// TODO")
+        if (index !== -1 && line[index + 7] !== '"')
+            toDoLines.push(line.slice(index))});
+    return toDoLines;
+}
+
+function showNames(username) {
+    let namedLines = [];
+    let todos = showTODOS();
+    todos.forEach(line => {if (line.toLowerCase().includes(username))
+        namedLines.push(line.slice(line.indexOf("// TODO")).split(';')[2].replace(' ', ''))});
+    return namedLines;
+}
+
+function showImportant() {
+    let importantLines = [];
+    let todos = showTODOS();
+    todos.forEach(line => {if (line.includes("!")) importantLines.push(line)});
+    return importantLines;
+}
+
+function sortImportance() {
+    return showTODOS().sort((todo1, todo2) => todo2.split('!').length - todo1.split('!').length)
+}
+
+function sortByUser() {
+    return showTODOS().slice().sort((todo1, todo2) => {
+        let firstName = todo1.split(' ').slice(2).join(' ').split(';')[0];
+        let secondName = todo2.split(' ').slice(2).join(' ').split(';')[0];
+
+        if(firstName === todo1.split(' ').slice(2).join(' ') || secondName === todo2.split(' ').slice(2).join(' '))
+            return 1
+
+        return secondName.length - firstName.length;
+    })
+}
+
+function sortByDate(){
+    return showTODOS().sort((todo1, todo2) => {
+        todo1 = todo1.split(';');
+        todo2 = todo2.split(';');
+        if (todo1.length > 2 && todo2.length > 2) {
+            todo1 = todo1[1].split(' ').join('').split('-').join('');
+            todo2 = todo2[1].split(' ').join('').split('-').join('');
+        }
+        return todo2 - todo1;
+    });
+}
+
 // TODO you can do it!