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Triple Dereference

Time of First Successful Submission: 2025-12-19 01:32:14

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-17 16:00:57

Command Arguments

Time of First Successful Submission: 2025-12-17 16:01:52

Command History

Time of First Successful Submission: 2025-12-17 16:22:59

The Root Path

Time of First Successful Submission: 2025-12-17 16:24:32

Absolute Paths

Time of First Successful Submission: 2025-12-17 16:25:28

Changing position

Time of First Successful Submission: 2025-12-17 16:27:21

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-17 16:29:42

Relative Paths

Time of First Successful Submission: 2025-12-17 16:33:17

Cat

Time of First Successful Submission: 2025-12-17 16:44:28

Ls

Time of First Successful Submission: 2025-12-17 16:58:55

Ls All

Time of First Successful Submission: 2025-12-17 17:06:59

Find

Time of First Successful Submission: 2025-12-17 23:07:53

Piping Echo

Time of First Successful Submission: 2025-12-18 00:33:57

Piping Stdout

Time of First Successful Submission: 2025-12-18 00:36:52

Piping Stdin

Time of First Successful Submission: 2025-12-18 00:45:49

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-17 15:24:28

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-17 15:28:41

Using the GUI Desktop

Time of First Successful Submission: 2025-12-17 15:34:15

Pasting into the Desktop

Time of First Successful Submission: 2025-12-17 15:37:21

Restarting Challenges

Time of First Successful Submission: 2025-12-17 15:41:19

Challenge Programs

Time of First Successful Submission: 2025-12-17 15:55:20

The Flag File

Time of First Successful Submission: 2025-12-17 16:05:19

Using Privileged Mode

Time of First Successful Submission: 2025-12-17 16:13:42

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-17 16:17:57

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-17 16:19:12

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-17 16:00:57

Intro to Arguments

Time of First Successful Submission: 2025-12-17 16:01:52

Command History

Time of First Successful Submission: 2025-12-17 16:22:59

The Root

Time of First Successful Submission: 2025-12-17 16:24:32

Program and absolute paths

Time of First Successful Submission: 2025-12-17 16:25:28

Position thy self

Time of First Successful Submission: 2025-12-17 16:27:21

Position elsewhere

Time of First Successful Submission: 2025-12-17 16:29:42

implicit relative paths, from /

Time of First Successful Submission: 2025-12-17 16:33:17

explicit relative paths, from /

Time of First Successful Submission: 2025-12-17 16:35:30

implicit relative path

Time of First Successful Submission: 2025-12-17 16:36:41

home sweet home

Time of First Successful Submission: 2025-12-17 16:41:01

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-17 16:44:28

catting absolute paths

Time of First Successful Submission: 2025-12-17 16:45:07

more catting practice

Time of First Successful Submission: 2025-12-17 16:45:47

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-17 16:51:00

comparing files

Time of First Successful Submission: 2025-12-17 16:56:47

listing files

Time of First Successful Submission: 2025-12-17 16:58:55

touching files

Time of First Successful Submission: 2025-12-17 16:59:57

removing files

Time of First Successful Submission: 2025-12-17 17:00:42

moving files

Time of First Successful Submission: 2025-12-17 17:03:37

copying files

Time of First Successful Submission: 2025-12-17 17:04:37

hidden files

Time of First Successful Submission: 2025-12-17 17:06:59

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-17 17:15:56

making directories

Time of First Successful Submission: 2025-12-17 17:17:28

finding files

Time of First Successful Submission: 2025-12-17 23:07:53

linking files

Time of First Successful Submission: 2025-12-17 23:23:01

Learning From Documentation

Time of First Successful Submission: 2025-12-17 23:27:02

Learning Complex Usage

Time of First Successful Submission: 2025-12-17 23:28:45

Reading Manuals

Time of First Successful Submission: 2025-12-17 23:32:09

Searching Manuals

Time of First Successful Submission: 2025-12-17 23:36:39

Searching For Manuals

Time of First Successful Submission: 2025-12-17 23:49:25

Helpful Programs

Time of First Successful Submission: 2025-12-17 23:52:26

Help for Builtins

Time of First Successful Submission: 2025-12-17 23:55:59

Matching with *

Time of First Successful Submission: 2025-12-18 00:07:20

Matching with ?

Time of First Successful Submission: 2025-12-18 00:09:12

Matching with []

Time of First Successful Submission: 2025-12-18 00:11:30

Matching paths with []

Time of First Successful Submission: 2025-12-18 00:13:43

Multiple globs

Time of First Successful Submission: 2025-12-18 00:15:38

Mixing globs

Time of First Successful Submission: 2025-12-18 00:21:35

Exclusionary globbing

Time of First Successful Submission: 2025-12-18 00:24:02

Tab completion

Time of First Successful Submission: 2025-12-18 00:25:41

Multiple options for tab completion

Time of First Successful Submission: 2025-12-18 00:26:57

Tab completion on commands

Time of First Successful Submission: 2025-12-18 00:27:52

Redirecting output

Time of First Successful Submission: 2025-12-18 00:33:57

Redirecting more output

Time of First Successful Submission: 2025-12-18 00:36:52

Appending output

Time of First Successful Submission: 2025-12-18 00:39:25

Redirecting errors

Time of First Successful Submission: 2025-12-18 00:43:59

Redirecting input

Time of First Successful Submission: 2025-12-18 00:45:49

Grepping stored results

Time of First Successful Submission: 2025-12-18 00:50:11

Grepping live output

Time of First Successful Submission: 2025-12-18 00:51:24

Grepping errors

Time of First Successful Submission: 2025-12-18 00:55:54

Filtering with grep -v

Time of First Successful Submission: 2025-12-18 00:57:12

Filtering with sed

Time of First Successful Submission: 2025-12-18 01:01:07

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-18 01:09:40

Process substitution for input

Time of First Successful Submission: 2025-12-18 01:20:25

Writing to multiple programs

Time of First Successful Submission: 2025-12-18 01:34:09

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-18 01:41:31

Named pipes

Time of First Successful Submission: 2025-12-18 02:57:46

Printing Variables

Time of First Successful Submission: 2025-12-18 02:59:50

Setting Variables

Time of First Successful Submission: 2025-12-18 03:01:49

Multi-word Variables

Time of First Successful Submission: 2025-12-18 03:03:21

Exporting Variables

Time of First Successful Submission: 2025-12-18 03:06:35

Printing Exported Variables

Time of First Successful Submission: 2025-12-18 03:07:20

Storing Command Output

Time of First Successful Submission: 2025-12-18 03:17:19

Reading Input

Time of First Successful Submission: 2025-12-18 03:24:58

Reading Files

Time of First Successful Submission: 2025-12-18 03:34:23

Translating characters

Time of First Successful Submission: 2025-12-18 04:00:53

Deleting characters

Time of First Successful Submission: 2025-12-18 04:01:57

Deleting newlines

Time of First Successful Submission: 2025-12-18 04:07:35

Extracting the first lines with head

Time of First Successful Submission: 2025-12-18 04:09:06

Extracting specific sections of text

Time of First Successful Submission: 2025-12-18 04:13:52

Sorting data

Time of First Successful Submission: 2025-12-18 04:15:53

Listing Processes

Time of First Successful Submission: 2025-12-18 05:11:55

Killing Processes

Time of First Successful Submission: 2025-12-18 05:14:32

Interrupting Processes

Time of First Successful Submission: 2025-12-18 05:15:23

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-18 05:21:24

Suspending Processes

Time of First Successful Submission: 2025-12-18 05:22:47

Resuming Processes

Time of First Successful Submission: 2025-12-18 05:23:54

Backgrounding Processes

Time of First Successful Submission: 2025-12-18 05:27:41

Foregrounding Processes

Time of First Successful Submission: 2025-12-18 05:30:09

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-18 05:31:39

Process Exit Codes

Time of First Successful Submission: 2025-12-18 05:35:31

Becoming root with su

Time of First Successful Submission: 2025-12-18 06:40:29

Other users with su

Time of First Successful Submission: 2025-12-18 06:41:50

Cracking passwords

Time of First Successful Submission: 2025-12-18 06:58:25

Using sudo

Time of First Successful Submission: 2025-12-18 07:03:16

Changing File Ownership

Time of First Successful Submission: 2025-12-18 08:34:16

Groups and Files

Time of First Successful Submission: 2025-12-18 08:40:33

Fun With Groups Names

Time of First Successful Submission: 2025-12-18 08:41:46

Changing Permissions

Time of First Successful Submission: 2025-12-18 08:49:16

Executable Files

Time of First Successful Submission: 2025-12-18 08:51:03

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-18 09:06:05

Permissions Setting Practice

Time of First Successful Submission: 2025-12-18 09:13:46

The SUID Bit

Time of First Successful Submission: 2025-12-18 09:19:36

Chaining with Semicolons

Time of First Successful Submission: 2025-12-18 09:29:01

Building on Success

Time of First Successful Submission: 2025-12-18 09:32:19

Handling Failure

Time of First Successful Submission: 2025-12-18 09:33:50

Your First Shell Script

Time of First Successful Submission: 2025-12-18 09:39:54

Redirecting Script Output

Time of First Successful Submission: 2025-12-18 09:42:40

Executable Shell Scripts

Time of First Successful Submission: 2025-12-18 09:52:14

Understanding Shebangs

Time of First Successful Submission: 2025-12-18 09:58:01

Scripting with Arguments

Time of First Successful Submission: 2025-12-18 10:35:50

Scripting with Conditionals

Time of First Successful Submission: 2025-12-18 10:41:58

Scripting with Default Cases

Time of First Successful Submission: 2025-12-18 10:45:12

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-18 11:38:24

Reading Shell Scripts

Time of First Successful Submission: 2025-12-18 11:44:59

Launching Screen

Time of First Successful Submission: 2025-12-18 11:50:36

Detaching and Attaching

Time of First Successful Submission: 2025-12-18 11:54:37

Finding Sessions

Time of First Successful Submission: 2025-12-18 11:58:19

Switching Windows

Time of First Successful Submission: 2025-12-18 12:01:06

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-18 12:03:41

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-18 12:07:02

The PATH Variable

Time of First Successful Submission: 2025-12-18 12:13:49

Setting PATH

Time of First Successful Submission: 2025-12-18 12:16:00

Finding Commands

Time of First Successful Submission: 2025-12-18 12:17:54

Adding Commands

Time of First Successful Submission: 2025-12-18 12:33:47

Hijacking Commands

Time of First Successful Submission: 2025-12-18 12:41:20

Bashrc Backdoor

Time of First Successful Submission: 2025-12-18 13:15:49

Sniffing Input

Time of First Successful Submission: 2025-12-18 13:35:14

Overshared Directories

Time of First Successful Submission: 2025-12-18 13:44:09

Tricky Linking

Time of First Successful Submission: 2025-12-18 14:00:47

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-18 15:57:38

Snooping on Configurations

Time of First Successful Submission: 2025-12-18 16:02:01

The Fork Bomb

Time of First Successful Submission: 2025-12-18 16:28:18

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-18 16:32:44

rm -rf /

Time of First Successful Submission: 2025-12-18 16:36:55

Life after rm -rf /

Time of First Successful Submission: 2025-12-18 16:54:20

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-18 16:59:40

Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-19 00:14:25

Your First Syscall

Time of First Successful Submission: 2025-12-19 00:19:25

Exit Codes

Time of First Successful Submission: 2025-12-19 00:23:31

Building Executables

Time of First Successful Submission: 2025-12-19 00:34:56

Moving Between Registers

Time of First Successful Submission: 2025-12-19 00:38:43

Loading From Memory

Time of First Successful Submission: 2025-12-19 01:13:01

More Loading Practice

Time of First Successful Submission: 2025-12-19 01:15:25

Dereferencing Pointers

Time of First Successful Submission: 2025-12-19 01:17:26

Dereferencing Yourself

Time of First Successful Submission: 2025-12-19 01:19:51

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-19 01:22:10

Stored Addresses

Time of First Successful Submission: 2025-12-19 01:24:07

Double Dereference

Time of First Successful Submission: 2025-12-19 01:26:41

Tracing Syscalls

Time of First Successful Submission: 2025-12-19 01:03:05

Starting GDB

Time of First Successful Submission: 2025-12-19 01:04:40

Starting Programs in GDB

Time of First Successful Submission: 2025-12-19 01:06:09

Writing Output

Time of First Successful Submission: 2025-12-19 05:44:48

Chaining Syscalls

Time of First Successful Submission: 2025-12-19 05:47:04

Writing Strings

Time of First Successful Submission: 2025-12-19 05:48:57

Reading Data

Time of First Successful Submission: 2025-12-19 06:22:50

set-register

Time of First Successful Submission: 2025-12-19 12:35:13

set-multiple-registers

Time of First Successful Submission: 2025-12-19 12:36:53

add-to-register

Time of First Successful Submission: 2025-12-19 12:39:11

linear-equation-registers

Time of First Successful Submission: 2025-12-19 12:40:42

integer-division

Time of First Successful Submission: 2025-12-19 12:45:03

modulo-operation

Time of First Successful Submission: 2025-12-19 12:46:39

set-upper-byte

Time of First Successful Submission: 2025-12-19 12:51:58

efficient-modulo

Time of First Successful Submission: 2025-12-19 12:57:23

byte-extraction

Time of First Successful Submission: 2025-12-19 17:08:33

bitwise-and

Time of First Successful Submission: 2025-12-19 17:13:11

check-even

Time of First Successful Submission: 2025-12-19 17:27:02

memory-read

Time of First Successful Submission: 2025-12-19 17:30:10

memory-write

Time of First Successful Submission: 2025-12-19 17:31:21

memory-increment

Time of First Successful Submission: 2025-12-19 17:33:21

byte-access

Time of First Successful Submission: 2025-12-19 17:34:42

memory-size-access

Time of First Successful Submission: 2025-12-19 18:16:35

little-endian-write

Time of First Successful Submission: 2025-12-19 18:23:20

memory-sum

Time of First Successful Submission: 2025-12-19 18:45:29

stack-subtraction

Time of First Successful Submission: 2025-12-19 18:48:59

swap-stack-values

Time of First Successful Submission: 2025-12-19 18:50:29

average-stack-values

Time of First Successful Submission: 2025-12-19 18:56:53

absolute-jump

Time of First Successful Submission: 2025-12-19 19:07:07

relative-jump

Time of First Successful Submission: 2025-12-19 19:28:10

jump-trampoline

Time of First Successful Submission: 2025-12-19 19:36:49

conditional-jump

Time of First Successful Submission: 2025-12-19 20:10:46

indirect-jump

Time of First Successful Submission: 2025-12-19 20:49:45

average-loop

Time of First Successful Submission: 2025-12-19 21:07:04

count-non-zero

Time of First Successful Submission: 2025-12-20 03:30:12

string-lower

Time of First Successful Submission: 2025-12-20 04:08:46

most-common-byte

Time of First Successful Submission: 2025-12-20 06:18:39

Exit

Time of First Successful Submission: 2025-12-21 12:11:48

Socket

Time of First Successful Submission: 2025-12-22 12:38:20

Bind

Time of First Successful Submission: 2025-12-22 13:07:08

Listen

Time of First Successful Submission: 2025-12-22 13:15:20

Accept

Time of First Successful Submission: 2025-12-22 13:18:42

Static Response

Time of First Successful Submission: 2025-12-22 13:37:38

Dynamic Response

Time of First Successful Submission: 2025-12-22 13:45:14

Iterative GET Server

Time of First Successful Submission: 2025-12-22 13:54:34

Concurrent GET Server

Time of First Successful Submission: 2025-12-22 14:11:49

Concurrent POST Server

Time of First Successful Submission: 2025-12-22 14:21:23

Web Server

Time of First Successful Submission: 2025-12-22 14:28:23

Debugging Programs

Time of First Successful Submission: 2025-12-20 12:38:09

Inspecting Registers

Time of First Successful Submission: 2025-12-20 12:40:18

Examining Memory

Time of First Successful Submission: 2025-12-21 00:35:37

Setting Breakpoints

Time of First Successful Submission: 2025-12-21 01:15:59

GDB Scripting

Time of First Successful Submission: 2025-12-21 01:42:25

Modifying Data

Time of First Successful Submission: 2025-12-21 02:15:00

Modifying Execution

Time of First Successful Submission: 2025-12-21 02:18:02

Broken Functions

Time of First Successful Submission: 2025-12-21 03:04:45

Playing With Programs

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Your First HTTP Request

Time of First Successful Submission: 2025-12-22 15:09:02

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-17 15:24:28

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-17 15:28:41

Using the GUI Desktop

Time of First Successful Submission: 2025-12-17 15:34:15

Pasting into the Desktop

Time of First Successful Submission: 2025-12-17 15:37:21

Restarting Challenges

Time of First Successful Submission: 2025-12-17 15:41:19

Challenge Programs

Time of First Successful Submission: 2025-12-17 15:55:20

The Flag File

Time of First Successful Submission: 2025-12-17 16:05:19

Using Privileged Mode

Time of First Successful Submission: 2025-12-17 16:13:42

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-17 16:17:57

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-17 16:19:12