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Intro to Programming Languages

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Lecture 1.1. Course Environment

Time of First Successful Submission: 2025-08-21 23:39:48

Lab 1.1 - Start Terminal

Time of First Successful Submission: 2025-08-21 23:41:48

Lecture 1.2. Linux Shells

Time of First Successful Submission: 2025-08-21 23:55:37

Lecture 1.3. Linux File System

Time of First Successful Submission: 2025-08-22 00:06:59

Lecture 1.4. Executing Programs

Time of First Successful Submission: 2025-08-22 00:13:35

Lecture 1.5. Common Commands

Time of First Successful Submission: 2025-08-22 03:28:50

Lab 1.5.2 - Using ls and cd

Time of First Successful Submission: 2025-08-23 02:53:02

Lab 1.5.3 - Using grep

Time of First Successful Submission: 2025-08-23 02:58:34

Lecture 1.6. Redirection of I/O

Time of First Successful Submission: 2025-08-23 03:20:39

Lab 1.6 - Using grep and pipe

Time of First Successful Submission: 2025-08-23 03:39:17

Lecture 1.7. Regular Expressions

Time of First Successful Submission: 2025-08-23 03:45:34

Lecture 1.8. Misc Linux

Time of First Successful Submission: 2025-08-23 03:58:21

Lecture 1.9. Testing Code on pwn.college

Time of First Successful Submission: 2025-08-23 04:01:35

Lab 1.9 - Test some If Statements

Time of First Successful Submission: 2025-08-23 04:20:03

P1.0 Level 1 Open /flag in VSCode

Time of First Successful Submission: 2025-08-25 05:43:10

Commands

Time of First Successful Submission: 2026-07-12 17:28:31

Command Arguments

Time of First Successful Submission: 2026-07-12 17:29:20

Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

Time of First Successful Submission: 2026-07-12 18:41:55

P1.0 Level 5 read

Time of First Successful Submission: 2025-08-25 05:53:39

Cat

Time of First Successful Submission: 2026-07-14 00:11:04

Ls

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Ls All

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P1.0 Level 2 list dir

Time of First Successful Submission: 2025-08-25 05:49:36

Find

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P1.0 Level 3 change dir

Time of First Successful Submission: 2025-08-25 05:50:33

P1.0 Level 4 move

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P1.0 Level 6 grep

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P1.0 Level 7 execute

Time of First Successful Submission: 2025-08-25 05:56:42

Piping Echo

Time of First Successful Submission: 2026-07-14 21:30:33

Piping Stdout

Time of First Successful Submission: 2026-07-15 00:36:42

Piping Stdin

Time of First Successful Submission: 2026-07-15 00:50:49

P1.0 Level 8 stdin

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P1.0 Level 9 pipe

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P1.0 Level 10 args

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P1.0 Level 11 gccpipe

Time of First Successful Submission: 2025-08-25 06:06:34

P1.0 Level 12 speedy

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P1.0 Level 13 testing

Time of First Successful Submission: 2025-08-25 06:54:55

P1.0 Level 14 ifs test

Time of First Successful Submission: 2025-08-25 07:02:55

Lecture 2.1.1.0 Paradigms and C

Time of First Successful Submission: 2025-08-30 02:48:17

Lecture 2.1.2. First C Program and Vars

Time of First Successful Submission: 2025-08-30 03:30:24

Lecture 2.1.2.1. Standard Output

Time of First Successful Submission: 2025-08-30 03:35:01

Lecture 2.1.2.2. Standard In

Time of First Successful Submission: 2025-08-30 06:17:58

Lab 2.1.2.1 - C Input

Time of First Successful Submission: 2025-08-30 07:36:46

Lecture 2.1.2.3. Flow Control & Command Line Arguments

Time of First Successful Submission: 2025-08-31 04:14:04

EzLab 2.1.2.3 - Control Flow

Time of First Successful Submission: 2025-08-31 04:16:56

Lecture 2.1.3.0 Dec & Def Functions

Time of First Successful Submission: 2025-08-31 04:27:15

Lecture 2.1.3.1. Globals & Locals

Time of First Successful Submission: 2025-08-31 04:40:44

Lecture 2.1.3.2. Function Params and Ret Vals

Time of First Successful Submission: 2025-08-31 05:00:32

EzLab 2.1.3.2 Pass by Value

Time of First Successful Submission: 2025-08-31 05:20:35

Lab 2.1.3.1 - Functions

Time of First Successful Submission: 2025-08-31 05:55:48

Lecture 2.1.4. Global and Local Memory

Time of First Successful Submission: 2025-08-31 06:03:42

Lecture 2.1.4.1. Function Frames

Time of First Successful Submission: 2025-08-31 06:11:10

Lecture 2.1.5. Debugging C Programs

Time of First Successful Submission: 2025-08-31 06:16:34

Lab 2.1.5.1 - Using VSCode Debugger

Time of First Successful Submission: 2025-08-31 06:27:05

P2.1 Level 01 C Force

Time of First Successful Submission: 2025-08-31 06:31:25

P2.1 Level 02 C Args

Time of First Successful Submission: 2025-08-31 06:38:53

P2.1 Level 03 scanf

Time of First Successful Submission: 2025-09-04 02:59:47

P2.1 Level 04 getchar

Time of First Successful Submission: 2025-09-06 07:50:23

P2.1 Level 05 add-n-sub

Time of First Successful Submission: 2025-09-06 08:52:31

P2.1 Level 06 debug me

Time of First Successful Submission: 2025-09-06 08:56:11

Lecture 2.2.1.1. C-Arrays

Time of First Successful Submission: 2025-09-06 09:16:53

Lecture 2.2.2. C-Strings

Time of First Successful Submission: 2025-09-07 02:08:45

Lab 2.2.2.0 - Print C-String by Character

Time of First Successful Submission: 2025-09-07 02:16:48

Lab 2.2.2.1 - Debugging with Seg Faults

Time of First Successful Submission: 2025-09-07 02:25:54

Lecture 2.2.3.1. Input to String

Time of First Successful Submission: 2025-09-07 02:30:42

Lecture 2.2.3.2 Using fgets

Time of First Successful Submission: 2025-09-07 02:37:31

Lecture 2.2.3.3. Input Buffer

Time of First Successful Submission: 2025-09-07 02:40:54

Lecture 2.2.4. File operations

Time of First Successful Submission: 2025-09-07 03:12:28

Lab 2.2.4.1 - LeeT CaSe

Time of First Successful Submission: 2025-09-07 03:23:45

Lecture 2.2.5.1. strlen

Time of First Successful Submission: 2025-09-07 03:34:19

EzLab 2.2.5.1 - String Length (strlen)

Time of First Successful Submission: 2025-09-07 03:48:41

Lecture 2.2.5.2. strcat

Time of First Successful Submission: 2025-09-07 04:00:16

EzLab 2.2.5.2 - String Concatenate (strcat)

Time of First Successful Submission: 2025-09-07 04:11:49

Lecture 2.2.5.3. strcmp

Time of First Successful Submission: 2025-09-07 04:15:52

EzLab 2.2.5.3 - String Compare (strcmp)

Time of First Successful Submission: 2025-09-07 04:20:17

Lecture 2.2.5.4. strcpy

Time of First Successful Submission: 2025-09-07 04:23:38

EzLab 2.2.5.4 - String Copy (strcpy/strncpy)

Time of First Successful Submission: 2025-09-07 04:26:43

Lecture 2.2.5.6. strspn

Time of First Successful Submission: 2025-09-07 04:32:36

Lab 2.2.5.6 - String Highlighter

Time of First Successful Submission: 2025-09-07 05:22:48

P2.2 Level 01 length

Time of First Successful Submission: 2025-09-09 06:32:05

P2.2 Level 02 c-cat

Time of First Successful Submission: 2025-09-09 06:58:35

P2.2 Level 03 c-copy

Time of First Successful Submission: 2025-09-13 06:53:14

P2.2 Level 04 c-compare

Time of First Successful Submission: 2025-09-13 07:34:32

P2.2 Level 05 c-up

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P2.2 Level 06 c-bugs

Time of First Successful Submission: 2025-09-14 04:35:52

P2.2 Level 07 c-debugger

Time of First Successful Submission: 2025-09-14 04:45:09

P2.2 Level 08 c-debugger2

Time of First Successful Submission: 2025-09-14 04:50:07

P2.2 Level 09 c-grind

Time of First Successful Submission: 2025-09-14 05:01:44

Lecture 2.3.1. Stack pointers

Time of First Successful Submission: 2025-09-14 05:16:36

Lab 2.3.1.0 - Print Non-printable Chars

Time of First Successful Submission: 2025-09-15 06:00:25

Lecture 2.3.2.0 Examples Single Value

Time of First Successful Submission: 2025-09-15 06:22:28

Lecture 2.3.2.1. Examples of Ptr to Array

Time of First Successful Submission: 2025-09-15 20:32:03

EzLab 2.3.2.1 - Character Pointers

Time of First Successful Submission: 2025-09-15 20:35:31

EzLab 2.3.2.1 - C-String Pointers

Time of First Successful Submission: 2025-09-15 20:38:00

Lecture 2.3.3.1. strstr video

Time of First Successful Submission: 2025-09-15 20:42:50

EzLab 2.3.3.1 - Find str in str (strstr)

Time of First Successful Submission: 2025-09-15 20:59:24

Lab 2.3.3.1 - Find Word Count

Time of First Successful Submission: 2025-09-15 21:14:38

Lecture 2.3.3.2. strtok video

Time of First Successful Submission: 2025-09-16 01:50:18

EzLab 2.3.3.2 - Get tokens (strtok)

Time of First Successful Submission: 2025-09-16 01:57:33

Lab 2.3.3.2 - Word Count

Time of First Successful Submission: 2025-09-16 02:22:28

Lecture 2.3.3.3. strchr video

Time of First Successful Submission: 2025-09-16 02:24:50

Lecture 2.3.3.4. memset

Time of First Successful Submission: 2025-09-16 02:26:54

P2.3 Level 01 Pig Latin

Time of First Successful Submission: 2025-09-19 01:14:07

P2.3 Level 02 Pig Latin

Time of First Successful Submission: 2025-09-19 03:18:03

P2.3 Level 03 Pig Latin

Time of First Successful Submission: 2025-09-19 07:09:39

P2.3 Level 04 Pig Latin

Time of First Successful Submission: 2025-09-20 07:52:19

Lecture 2.4.1.1. struct into

Time of First Successful Submission: 2025-09-23 07:58:14

EzLab 2.4.1.1 - Using a struct

Time of First Successful Submission: 2025-09-23 08:06:49

Lecture 2.4.1.4. string to struct

Time of First Successful Submission: 2025-09-23 08:09:45

EzLab 2.4.1.4 - Struct from string

Time of First Successful Submission: 2025-09-23 08:18:22

Lecture 2.4.1.5. array of struct

Time of First Successful Submission: 2025-09-23 08:23:19

Lab 2.4.1.5 - Songs List

Time of First Successful Submission: 2025-09-24 03:24:37

Lecture 2.4.1.6. enum

Time of First Successful Submission: 2025-09-24 03:30:11

Lecture 2.4.2.1. C preprocessor

Time of First Successful Submission: 2025-09-24 03:40:40

EzLab 2.4.2.1 - C Preprocessor

Time of First Successful Submission: 2025-09-24 04:00:05

Lecture 2.4.2.2. Header files

Time of First Successful Submission: 2025-09-24 04:08:22

Lecture 2.4.2.6. Makefile

Time of First Successful Submission: 2025-09-24 04:12:46

EzLab 2.4.2.6 - Makefiles

Time of First Successful Submission: 2025-09-24 05:39:00

Lab 2.4.2.6 - Make Songs

Time of First Successful Submission: 2025-09-24 05:50:37

Lab 2.4.2.6 - Filter Songs

Time of First Successful Submission: 2025-09-24 06:07:00

Lecture 2.5.1.3. the heap

Time of First Successful Submission: 2025-09-30 06:16:00

Lecture 2.5.1.4. malloc an int

Time of First Successful Submission: 2025-09-30 06:32:04

Lecture 2.5.1.5. create a heap based array

Time of First Successful Submission: 2025-09-30 06:45:46

Lecture 2.5.1.6. free the heap

Time of First Successful Submission: 2025-09-30 06:52:38

EzLab 2.5.1.6 Heap

Time of First Successful Submission: 2025-09-30 07:32:59

Lab 2.5.1.6 - Stack on Heap

Time of First Successful Submission: 2025-09-30 07:53:13

Lecture 2.5.2.1. realloc

Time of First Successful Submission: 2025-09-30 07:56:15

Lecture 2.5.2.2. getline

Time of First Successful Submission: 2025-09-30 08:01:27

Lecture 2.5.2.3. strdup

Time of First Successful Submission: 2025-09-30 08:03:09

Lecture 2.5.2.4. struct malloc

Time of First Successful Submission: 2025-09-30 08:07:19

EzLab 2.5.2.4 Heap Based Array

Time of First Successful Submission: 2025-09-30 08:21:24

Lab 2.5.2.4 - Paging Songs

Time of First Successful Submission: 2025-09-30 08:50:35

P2.5 Level 01 Get Maxxed

Time of First Successful Submission: 2025-10-03 09:13:15

P2.5 Level 02 Load up those items

Time of First Successful Submission: 2025-10-04 08:20:36

P2.5 Level 03 Load the Rooms

Time of First Successful Submission: 2025-10-04 08:45:49

P2.5 Level 04 Free your mind

Time of First Successful Submission: 2025-10-04 08:56:58

P2.5 Level 05 Show me your room

Time of First Successful Submission: 2025-10-04 09:57:40

P2.5 Level 06 Moving Around

Time of First Successful Submission: 2025-10-05 03:20:14

P2.5 Level 07 Getting Items and Player's Inventory

Time of First Successful Submission: 2025-10-05 03:43:22

P2.5 Level 08 Dropping Items and Looking

Time of First Successful Submission: 2025-10-05 04:54:25

Lecture 2.6.1. Double Ptr Local

Time of First Successful Submission: 2025-10-08 08:40:36

Lecture 2.6.1.1. Double Ptr Heap

Time of First Successful Submission: 2025-10-08 08:44:22

Lecture 2.6.1.2. Triple Ptr Local

Time of First Successful Submission: 2025-10-09 02:08:46

Lecture 2.6.2.2. Pass-By-Address

Time of First Successful Submission: 2025-10-09 02:14:08

EzLab 2.6.2.2 Pass By Address

Time of First Successful Submission: 2025-10-09 02:20:07

Lecture 2.6.2.3. PBA - Double Ptrs

Time of First Successful Submission: 2025-10-09 02:23:52

Lecture 2.7.1.2. Array lists

Time of First Successful Submission: 2025-10-09 02:31:20

Lecture 2.7.1.3. Array lists insert and remove

Time of First Successful Submission: 2025-10-09 02:36:00

Lecture 2.7.2.0 Linked List

Time of First Successful Submission: 2025-10-09 02:42:33

Lecture 2.7.2.1. Linked List Insert at End

Time of First Successful Submission: 2025-10-09 02:47:54

Lecture 2.7.2.2. Linked List Insert at

Time of First Successful Submission: 2025-10-09 02:53:56

Lecture 2.7.2.3. Linked List Remove

Time of First Successful Submission: 2025-10-09 02:58:08

Lecture 2.7.2.4. Array list v. Linked List

Time of First Successful Submission: 2025-10-09 03:06:32

Lab 2.7.2.4a - Linked List Songs

Time of First Successful Submission: 2025-10-09 05:59:32

Lab 2.7.2.4b - LL Paging

Time of First Successful Submission: 2025-10-09 06:27:22

Lecture 3.1.1. OO Paradigm

Time of First Successful Submission: 2025-10-14 02:44:42

Lecture 3.1.2.1. Differences

Time of First Successful Submission: 2025-10-14 02:48:55

Lecture 3.1.2.2. Buffer and Files

Time of First Successful Submission: 2025-10-14 02:57:18

Lab 3.1.2.2 - Creating Objects from JSON

Time of First Successful Submission: 2025-10-14 03:30:35

Lecture 3.1.3. Classes

Time of First Successful Submission: 2025-10-14 03:38:31

EzLab 3.1.3.0 Classes & Objects

Time of First Successful Submission: 2025-10-14 03:50:30

Lecture 3.2.1. Inheritance introduction

Time of First Successful Submission: 2025-10-15 01:21:32

Lecture 3.2.2. Concrete Classes

Time of First Successful Submission: 2025-10-15 01:26:47

Lecture 3.2.2.1. Abstract Classes

Time of First Successful Submission: 2025-10-15 01:32:04

Lecture 3.2.2.2. Working with inherited classes

Time of First Successful Submission: 2025-10-15 01:37:25

EzLab 3.2.2.2 Inheritance

Time of First Successful Submission: 2025-10-15 01:45:38

Lecture 3.2.4. Header and c++ Files

Time of First Successful Submission: 2025-10-15 01:49:10

P3.2 Level 01 Get Data

Time of First Successful Submission: 2025-10-16 06:10:02

P3.2 Level 02 Create the Shop

Time of First Successful Submission: 2025-10-21 07:53:09

P3.2 Level 03 Shop Interface

Time of First Successful Submission: 2025-10-22 05:15:22

P3.2 Level 04 Buy

Time of First Successful Submission: 2025-10-22 06:50:56

P3.2 Level 05 Search

Time of First Successful Submission: 2025-10-22 08:24:27

P3.2 Level 06 Multi-store

Time of First Successful Submission: 2025-10-26 04:17:26

P3.2 Level 07 Search-Buy

Time of First Successful Submission: 2025-10-26 04:58:33

Lecture 3.3.1.2. Templated Types

Time of First Successful Submission: 2025-10-15 01:54:07

Lecture 3.3.2.1. STL Pairs and Vectors

Time of First Successful Submission: 2025-10-15 01:59:24

Lecture 3.3.2.2. STL Map

Time of First Successful Submission: 2025-10-15 02:03:37

Lecture 3.3.3. Smart Pointers

Time of First Successful Submission: 2025-10-15 02:08:58

Lecture 3.3.4.1. Pass by Reference

Time of First Successful Submission: 2025-10-15 02:11:57

Lecture 3.3.4.2. Operator Overloading

Time of First Successful Submission: 2025-10-15 02:14:36

Lecture 3.3.4.3. Friend keyword

Time of First Successful Submission: 2025-10-15 02:16:57

P3.3 Level 01 Integrate and Load

Time of First Successful Submission: 2025-11-08 05:45:11

P3.3 Level 02 Load Team

Time of First Successful Submission: 2025-11-08 07:46:01

P3.3 Level 03 Remove and Add

Time of First Successful Submission: 2025-11-09 07:22:39

P3.3 Level 04 Battle

Time of First Successful Submission: 2025-11-09 22:50:33

P3.3 Level 05 Challenge the Trainers

Time of First Successful Submission: 2025-11-10 02:20:23

EC 3.3 Level 08 Prad

Time of First Successful Submission: 2025-11-13 09:13:05

Lecture 3.4.1.0 BFS 1

Time of First Successful Submission: 2025-11-01 03:24:42

Lecture 3.4.1.1. BFS 2

Time of First Successful Submission: 2025-11-01 03:49:37

EzLab 3.4.1.1 BFS in a Matrix

Time of First Successful Submission: 2025-11-01 03:53:30

Lecture 3.4.2.0 Min Heap 1

Time of First Successful Submission: 2025-11-02 01:36:07

Lecture 3.4.2.1. Min Heap Insert

Time of First Successful Submission: 2025-11-02 01:39:42

Lecture 3.4.2.2. Min Heap Delete

Time of First Successful Submission: 2025-11-02 02:00:31

Lecture 3.4.2.3. Min Heap in Array

Time of First Successful Submission: 2025-11-02 02:03:16

Lecture 3.4.2.4. Min Heap in Arr Insert

Time of First Successful Submission: 2025-11-02 02:09:26

Lecture 4.1.1. Functional Programming Paradigm

Time of First Successful Submission: 2025-11-02 02:27:15

Lecture 4.1.1.2. Why Functional Language

Time of First Successful Submission: 2025-11-02 02:32:20

Lecture 4.1.2.1. Scheme Intro Part 1

Time of First Successful Submission: 2025-11-03 03:42:40

Lecture 4.1.2.2. Scheme Intro Part 2

Time of First Successful Submission: 2025-11-03 04:01:04

Lecture 4.1.2.3. Math Operations in Scheme

Time of First Successful Submission: 2025-11-03 04:29:39

Lecture 4.1.2.4. Predicates and Types

Time of First Successful Submission: 2025-11-03 05:59:39

Lecture 4.1.3.1. Conditionals

Time of First Successful Submission: 2025-11-03 06:08:43

Lab 4.1 - Hello

Time of First Successful Submission: 2025-11-03 06:11:55

Lecture 4.2.1.1. Functions

Time of First Successful Submission: 2025-11-13 03:06:30

Lab 4.2.1 - String Info

Time of First Successful Submission: 2025-11-13 03:18:28

Lecture 4.2.2. List Operations

Time of First Successful Submission: 2025-11-13 03:27:55

Lecture 4.2.2.1. Recursion

Time of First Successful Submission: 2025-11-13 03:34:41

Lecture 4.2.3. Higher Order Functions

Time of First Successful Submission: 2025-11-13 03:39:41

Lab 4.2.2 - String Mangler

Time of First Successful Submission: 2025-11-13 03:48:24

Lab 4.2.3 - Damage Calculator

Time of First Successful Submission: 2025-11-13 08:10:45

P4.2 Level 01 String Info

Time of First Successful Submission: 2025-11-13 08:24:19

P4.2 Level 02 FF Attack Calc

Time of First Successful Submission: 2025-11-13 08:33:21

P4.2 Level 03 FF Base Dmg Calc

Time of First Successful Submission: 2025-11-13 08:52:28

P4.2 Level 04 Factorial 2.0

Time of First Successful Submission: 2025-11-13 09:01:38

P4.2 Level 05 Get Fourthy

Time of First Successful Submission: 2025-11-13 09:07:26

P4.2 Level 06 Filtering My Char Out

Time of First Successful Submission: 2025-11-13 09:21:39

Linux Luminarium

128 / 128 3916 / 40467

Intro to Commands

Time of First Successful Submission: 2026-07-12 17:28:31

Intro to Arguments

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Command History

Time of First Successful Submission: 2026-07-12 17:29:45

The Root

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Program and absolute paths

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Position thy self

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Position elsewhere

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implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

Time of First Successful Submission: 2026-07-12 19:08:35

home sweet home

Time of First Successful Submission: 2026-07-12 19:28:14

cat: not the pet, but the command!

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catting absolute paths

Time of First Successful Submission: 2026-07-14 00:11:55

more catting practice

Time of First Successful Submission: 2026-07-14 00:13:10

grepping for a needle in a haystack

Time of First Successful Submission: 2026-07-14 00:14:10

comparing files

Time of First Successful Submission: 2026-07-14 00:19:58

listing files

Time of First Successful Submission: 2026-07-14 00:22:10

touching files

Time of First Successful Submission: 2026-07-14 00:23:56

removing files

Time of First Successful Submission: 2026-07-14 00:24:48

moving files

Time of First Successful Submission: 2026-07-14 00:26:29

copying files

Time of First Successful Submission: 2026-07-14 00:27:01

hidden files

Time of First Successful Submission: 2026-07-14 00:28:23

An Epic Filesystem Quest

Time of First Successful Submission: 2026-07-14 00:39:16

making directories

Time of First Successful Submission: 2026-07-14 00:40:23

finding files

Time of First Successful Submission: 2026-07-14 01:29:58

linking files

Time of First Successful Submission: 2026-07-14 01:50:01

Learning From Documentation

Time of First Successful Submission: 2026-07-14 01:52:29

Learning Complex Usage

Time of First Successful Submission: 2026-07-14 01:54:19

Reading Manuals

Time of First Successful Submission: 2026-07-14 01:57:36

Searching Manuals

Time of First Successful Submission: 2026-07-14 01:58:39

Searching For Manuals

Time of First Successful Submission: 2026-07-14 02:17:38

Helpful Programs

Time of First Successful Submission: 2026-07-14 02:18:42

Help for Builtins

Time of First Successful Submission: 2026-07-14 02:21:01

Matching with *

Time of First Successful Submission: 2026-07-14 02:30:32

Matching with ?

Time of First Successful Submission: 2026-07-14 02:36:34

Matching with []

Time of First Successful Submission: 2026-07-14 21:08:02

Matching paths with []

Time of First Successful Submission: 2026-07-14 21:09:31

Multiple globs

Time of First Successful Submission: 2026-07-14 21:11:33

Mixing globs

Time of First Successful Submission: 2026-07-14 21:17:01

Exclusionary globbing

Time of First Successful Submission: 2026-07-14 21:22:18

Tab completion

Time of First Successful Submission: 2026-07-14 21:23:46

Multiple options for tab completion

Time of First Successful Submission: 2026-07-14 21:25:11

Tab completion on commands

Time of First Successful Submission: 2026-07-14 21:25:47

Redirecting output

Time of First Successful Submission: 2026-07-14 21:30:33

Redirecting more output

Time of First Successful Submission: 2026-07-15 00:36:42

Appending output

Time of First Successful Submission: 2026-07-15 00:41:09

Redirecting errors

Time of First Successful Submission: 2026-07-15 00:44:25

Redirecting input

Time of First Successful Submission: 2026-07-15 00:50:49

Grepping stored results

Time of First Successful Submission: 2026-07-15 00:55:27

Grepping live output

Time of First Successful Submission: 2026-07-15 00:57:18

Grepping errors

Time of First Successful Submission: 2026-07-15 01:00:19

Filtering with grep -v

Time of First Successful Submission: 2026-07-15 01:01:55

Filtering with sed

Time of First Successful Submission: 2026-07-15 01:07:30

Duplicating piped data with tee

Time of First Successful Submission: 2026-07-15 01:26:02

Process substitution for input

Time of First Successful Submission: 2026-07-15 01:29:01

Writing to multiple programs

Time of First Successful Submission: 2026-07-15 01:41:32

Split-piping stderr and stdout

Time of First Successful Submission: 2026-07-15 01:47:03

Named pipes

Time of First Successful Submission: 2026-07-15 02:04:44

Printing Variables

Time of First Successful Submission: 2026-07-15 02:19:28

Setting Variables

Time of First Successful Submission: 2026-07-15 02:20:28

Multi-word Variables

Time of First Successful Submission: 2026-07-15 02:21:05

Exporting Variables

Time of First Successful Submission: 2026-07-15 02:25:00

Printing Exported Variables

Time of First Successful Submission: 2026-07-15 02:26:32

Storing Command Output

Time of First Successful Submission: 2026-07-15 02:27:57

Reading Input

Time of First Successful Submission: 2026-07-15 02:30:27

Reading Files

Time of First Successful Submission: 2026-07-15 02:35:48

Translating characters

Time of First Successful Submission: 2026-07-16 01:42:43

Deleting characters

Time of First Successful Submission: 2026-07-16 01:44:46

Deleting newlines

Time of First Successful Submission: 2026-07-16 01:49:49

Extracting the first lines with head

Time of First Successful Submission: 2026-07-16 01:51:09

Extracting specific sections of text

Time of First Successful Submission: 2026-07-16 01:56:41

Sorting data

Time of First Successful Submission: 2026-07-16 01:58:30

Listing Processes

Time of First Successful Submission: 2026-07-16 02:02:40

Killing Processes

Time of First Successful Submission: 2026-07-16 02:03:46

Interrupting Processes

Time of First Successful Submission: 2026-07-16 02:04:24

Killing Misbehaving Processes

Time of First Successful Submission: 2026-07-16 02:16:11

Suspending Processes

Time of First Successful Submission: 2026-07-16 02:17:44

Resuming Processes

Time of First Successful Submission: 2026-07-16 02:18:36

Backgrounding Processes

Time of First Successful Submission: 2026-07-16 02:26:26

Foregrounding Processes

Time of First Successful Submission: 2026-07-16 02:27:24

Starting Backgrounded Processes

Time of First Successful Submission: 2026-07-16 02:28:03

Process Exit Codes

Time of First Successful Submission: 2026-07-16 02:29:07

Becoming root with su

Time of First Successful Submission: 2026-07-16 23:09:59

Other users with su

Time of First Successful Submission: 2026-07-16 23:11:12

Cracking passwords

Time of First Successful Submission: 2026-07-16 23:22:24

Using sudo

Time of First Successful Submission: 2026-07-16 23:24:25

Changing File Ownership

Time of First Successful Submission: 2026-07-17 04:45:22

Groups and Files

Time of First Successful Submission: 2026-07-18 03:07:51

Fun With Groups Names

Time of First Successful Submission: 2026-07-18 03:21:10

Changing Permissions

Time of First Successful Submission: 2026-07-18 04:02:40

Executable Files

Time of First Successful Submission: 2026-07-18 04:05:11

Permission Tweaking Practice

Time of First Successful Submission: 2026-07-18 04:19:48

Permissions Setting Practice

Time of First Successful Submission: 2026-07-18 04:29:49

The SUID Bit

Time of First Successful Submission: 2026-07-18 04:33:00

Chaining with Semicolons

Time of First Successful Submission: 2026-07-18 04:34:04

Building on Success

Time of First Successful Submission: 2026-07-18 04:34:57

Handling Failure

Time of First Successful Submission: 2026-07-18 04:35:31

Your First Shell Script

Time of First Successful Submission: 2026-07-18 04:37:20

Redirecting Script Output

Time of First Successful Submission: 2026-07-18 04:39:02

Executable Shell Scripts

Time of First Successful Submission: 2026-07-18 04:41:02

Understanding Shebangs

Time of First Successful Submission: 2026-07-18 04:45:06

Scripting with Arguments

Time of First Successful Submission: 2026-07-18 04:47:23

Scripting with Conditionals

Time of First Successful Submission: 2026-07-18 04:49:02

Scripting with Default Cases

Time of First Successful Submission: 2026-07-18 04:49:43

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-07-18 04:52:29

Reading Shell Scripts

Time of First Successful Submission: 2026-07-18 04:53:33

Launching Screen

Time of First Successful Submission: 2026-07-18 04:54:32

Detaching and Attaching

Time of First Successful Submission: 2026-07-18 04:55:52

Finding Sessions

Time of First Successful Submission: 2026-07-18 04:57:18

Switching Windows

Time of First Successful Submission: 2026-07-18 04:58:09

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-07-18 04:59:34

Switching Windows (tmux)

Time of First Successful Submission: 2026-07-18 05:00:13

The PATH Variable

Time of First Successful Submission: 2026-07-18 08:27:55

Setting PATH

Time of First Successful Submission: 2026-07-18 08:29:25

Finding Commands

Time of First Successful Submission: 2026-07-18 21:08:44

Adding Commands

Time of First Successful Submission: 2026-07-18 21:49:23

Hijacking Commands

Time of First Successful Submission: 2026-07-19 02:37:30

Bashrc Backdoor

Time of First Successful Submission: 2026-07-19 02:40:19

Sniffing Input

Time of First Successful Submission: 2026-07-19 02:52:01

Overshared Directories

Time of First Successful Submission: 2026-07-19 03:07:21

Tricky Linking

Time of First Successful Submission: 2026-07-19 03:23:54

Sniffing Process Arguments

Time of First Successful Submission: 2026-07-19 03:28:10

Snooping on Configurations

Time of First Successful Submission: 2026-07-19 03:30:40

The Fork Bomb

Time of First Successful Submission: 2026-07-19 03:38:46

Disk-Space Doomsday

Time of First Successful Submission: 2026-07-19 03:40:44

rm -rf /

Time of First Successful Submission: 2026-07-19 04:15:15

Life after rm -rf /

Time of First Successful Submission: 2026-07-19 05:12:39

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-07-19 05:20:14

Computing 101

128 / 132 215 / 21993

Your First Register

Time of First Successful Submission: 2026-07-19 21:20:24

Your First Syscall

Time of First Successful Submission: 2026-07-19 21:24:01

Exit Codes

Time of First Successful Submission: 2026-07-19 21:35:37

Building Executables

Time of First Successful Submission: 2026-07-19 22:20:52

Moving Between Registers

Time of First Successful Submission: 2026-07-19 22:24:32

Loading From Memory

Time of First Successful Submission: 2026-07-20 05:22:29

More Loading Practice

Time of First Successful Submission: 2026-07-20 05:27:45

Dereferencing Pointers

Time of First Successful Submission: 2026-07-20 05:40:29

Dereferencing Yourself

Time of First Successful Submission: 2026-07-20 05:45:36

Dereferencing with Offsets

Time of First Successful Submission: 2026-07-20 05:52:11

Stored Addresses

Time of First Successful Submission: 2026-07-20 05:59:46

Double Dereference

Time of First Successful Submission: 2026-07-20 06:14:08

The Stack

Time of First Successful Submission: 2026-07-20 09:51:56

Stack Offsets

Time of First Successful Submission: 2026-07-20 09:53:32

Program Arguments on the Stack

Time of First Successful Submission: 2026-07-20 10:03:44

Popping From the Stack

Time of First Successful Submission: 2026-07-20 10:10:33

Negative Numbers

Time of First Successful Submission: 2026-07-20 10:16:32

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-07-21 03:14:17

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-07-21 06:07:22

Encoding Negatives

Time of First Successful Submission: 2026-07-21 06:36:10

Binary and Hex Encoding

Time of First Successful Submission: 2026-07-21 06:37:19

More Hex

Time of First Successful Submission: 2026-07-21 06:38:26

Decoding Hex

Time of First Successful Submission: 2026-07-21 06:39:10

Mixed Conversions

Time of First Successful Submission: 2026-07-21 06:59:58

Disassembling Programs

Time of First Successful Submission: 2026-07-21 08:14:56

Tracing Syscalls

Time of First Successful Submission: 2026-07-21 08:28:54

Starting GDB

Time of First Successful Submission: 2026-07-21 08:30:02

Quitting GDB

Time of First Successful Submission: 2026-07-21 08:36:03

Starting Programs in GDB

Time of First Successful Submission: 2026-07-21 08:40:09

Disassembling in GDB

Time of First Successful Submission: 2026-07-21 08:48:07

Stepping Through Instructions

Time of First Successful Submission: 2026-07-21 08:52:33

Reading Register Values

Time of First Successful Submission: 2026-07-21 08:55:40

Setting Register Values

Time of First Successful Submission: 2026-07-21 09:00:13

Popping Stack Values

Time of First Successful Submission: 2026-07-21 09:02:11

Examining Memory

Time of First Successful Submission: 2026-07-21 09:06:35

Examining Stack Pointers

Time of First Successful Submission: 2026-07-21 09:09:20

Cooperative Debugging

Time of First Successful Submission: 2026-07-21 09:14:02

Running with Arguments

Time of First Successful Submission: 2026-07-21 09:15:38

Redirecting Input in GDB

Time of First Successful Submission: 2026-07-21 09:17:18

Writing Output

Time of First Successful Submission: 2026-07-22 00:46:17

Chaining Syscalls

Time of First Successful Submission: 2026-07-22 00:51:09

Writing Strings

Time of First Successful Submission: 2026-07-22 01:07:41

Reading Data

Time of First Successful Submission: 2026-07-22 01:19:21

Reading Exactly

Time of First Successful Submission: 2026-07-22 01:44:08

Opening Files

Time of First Successful Submission: 2026-07-22 07:34:43

Hardcoding the Filename

Time of First Successful Submission: 2026-07-22 07:45:38

RIP-Relative Strings

Time of First Successful Submission: 2026-07-22 07:57:20

Comparing Values

Time of First Successful Submission: 2026-07-22 23:50:27

Comparing Characters

Time of First Successful Submission: 2026-07-22 23:57:53

Conditional Control Flow

Time of First Successful Submission: 2026-07-23 00:25:59

Comparing Strings

Time of First Successful Submission: 2026-07-23 00:36:52

Reverse the Password

Time of First Successful Submission: 2026-07-23 00:50:17

Conditionals Without Conditionals

Time of First Successful Submission: 2026-07-23 05:28:23

Recognizing Loops

Time of First Successful Submission: 2026-07-23 06:12:40

Writing Loops

Time of First Successful Submission: 2026-07-23 08:11:59

Writing From a Shared Library

Time of First Successful Submission: 2026-07-23 09:00:51

Returning a Value

Time of First Successful Submission: 2026-07-23 09:39:20

Calling Through a Pointer

Time of First Successful Submission: 2026-07-23 09:42:54

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-07-23 10:41:54

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-07-23 11:01:23

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-07-23 11:11:27

Sign Extension

Time of First Successful Submission: 2026-07-23 11:43:54

Little-Endian Bytes

Time of First Successful Submission: 2026-07-23 22:52:00

Qword by Qword

Time of First Successful Submission: 2026-07-23 23:06:27

Dword by Dword

Time of First Successful Submission: 2026-07-23 23:21:14

Word by Word

Time of First Successful Submission: 2026-07-23 23:38:21

Byte by Byte

Time of First Successful Submission: 2026-07-23 23:45:08

Cracking a Struct

Time of First Successful Submission: 2026-07-24 01:29:15

Scrambled Struct

Time of First Successful Submission: 2026-07-24 01:48:36

Reverse the Calculation

Time of First Successful Submission: 2026-07-24 02:11:10

Reverse the Reverse

Time of First Successful Submission: 2026-07-24 02:13:02

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-07-24 02:19:35

Even or Odd

Time of First Successful Submission: 2026-07-24 02:39:47

Masking Bits

Time of First Successful Submission: 2026-07-24 02:46:38

Lowercase a String

Time of First Successful Submission: 2026-07-24 02:50:37

Uppercase a String

Time of First Successful Submission: 2026-07-24 03:18:20

Swap Case

Time of First Successful Submission: 2026-07-24 03:23:01

Shifting Left

Time of First Successful Submission: 2026-07-24 03:27:03

Shifting Right

Time of First Successful Submission: 2026-07-24 03:33:41

Loops on Data

Time of First Successful Submission: 2026-07-24 03:40:08

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-07-24 04:19:31

Loading Stale Stack Data

Time of First Successful Submission: 2026-07-24 04:25:37

Stealing Stale Stack Data

Time of First Successful Submission: 2026-07-24 04:29:08

Reserving Your Own Frame

Time of First Successful Submission: 2026-07-24 04:58:08

Using Your Own Frame

Time of First Successful Submission: 2026-07-25 19:30:19

Environment Variables on the Stack

Time of First Successful Submission: 2026-07-26 04:54:00

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-07-26 05:29:41

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-07-26 05:39:26

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-07-26 05:47:29

A Single Digit

Time of First Successful Submission: 2026-07-26 06:02:49

Two Digits

Time of First Successful Submission: 2026-07-26 18:54:28

String to Integer

Time of First Successful Submission: 2026-07-26 19:25:37

Negative Numbers

Time of First Successful Submission: 2026-07-26 19:56:40

Where the Number Ends

Time of First Successful Submission: 2026-07-27 00:18:01

A Whole Program

Time of First Successful Submission: 2026-07-28 01:04:24

A Single Digit, Back to Text

Time of First Successful Submission: 2026-07-28 01:23:15

Divide and Remainder

Time of First Successful Submission: 2026-07-28 02:38:27

Drop the Leading Zero

Time of First Successful Submission: 2026-07-29 02:05:54

Integer to String

Time of First Successful Submission: 2026-07-29 03:30:56

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-07-29 04:03:19

Sum Them All

Time of First Successful Submission: 2026-07-31 03:24:25

Addition

Time of First Successful Submission: 2026-08-07 03:05:46

Subtraction

Time of First Successful Submission: 2026-08-07 03:22:14

Multiplication

Time of First Successful Submission: 2026-08-07 03:25:36

Bitwise Operators

Time of First Successful Submission: 2026-08-07 03:34:42

Unary Operators

Time of First Successful Submission: 2026-08-07 03:54:57

Literal Output

Time of First Successful Submission: 2026-08-08 03:20:36

Newline Escapes

Time of First Successful Submission: 2026-08-08 04:11:03

Escaped Syntax

Time of First Successful Submission: 2026-08-08 09:17:39

Decimal Markers

Time of First Successful Submission: 2026-08-09 05:17:32

Multiple Decimal Markers

Time of First Successful Submission: 2026-08-10 04:11:05

String Markers

Time of First Successful Submission: 2026-08-10 06:31:57

Hex Byte Escapes

Time of First Successful Submission: 2026-08-11 01:37:01

Debugging Programs

Time of First Successful Submission: 2026-08-11 01:40:42

Inspecting Registers

Time of First Successful Submission: 2026-08-11 01:44:55

Examining Memory

Time of First Successful Submission: 2026-08-11 01:56:50

Setting Breakpoints

Time of First Successful Submission: 2026-08-11 02:36:00

GDB Scripting

Time of First Successful Submission: 2026-08-11 03:16:41

Modifying Data

Time of First Successful Submission: 2026-08-11 03:43:06

Modifying Execution

Time of First Successful Submission: 2026-08-11 03:44:36

Broken Functions

Time of First Successful Submission: 2026-08-11 03:50:23

Exit

Time of First Successful Submission: 2026-08-13 02:32:00

Socket

Time of First Successful Submission: 2026-08-13 02:51:41

Bind

Time of First Successful Submission: 2026-08-13 06:58:14

Listen

Time of First Successful Submission: 2026-08-13 07:14:54

Accept

Time of First Successful Submission: 2026-08-13 07:27:55

Static Response

Time of First Successful Submission: 2026-08-13 07:50:50

Dynamic Response

Time of First Successful Submission: 2026-08-13 08:33:13

Iterative GET Server

Time of First Successful Submission: 2026-08-14 01:21:24

Concurrent GET Server

Time of First Successful Submission: 2026-08-14 01:47:46

Concurrent POST Server

Time of First Successful Submission: 2026-08-14 03:09:01

Web Server

Time of First Successful Submission: 2026-08-14 03:03:58