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1 / 202 21976 / 22791


Triple Dereference

Time of First Successful Submission: 2025-12-23 07:32:19


Intro to Programming Languages

15 / 234 6768 / 31936


Commands

Time of First Successful Submission: 2025-12-15 07:29:32

Command Arguments

Time of First Successful Submission: 2025-12-15 07:30:01

Command History

Time of First Successful Submission: 2025-12-15 07:30:35

The Root Path

Time of First Successful Submission: 2025-12-15 07:31:34

Absolute Paths

Time of First Successful Submission: 2025-12-15 07:33:27

Changing position

Time of First Successful Submission: 2025-12-15 07:34:03

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-15 07:35:33

Relative Paths

Time of First Successful Submission: 2025-12-15 07:37:35

Cat

Time of First Successful Submission: 2025-12-15 08:42:47

Ls

Time of First Successful Submission: 2025-12-15 08:46:26

Ls All

Time of First Successful Submission: 2025-12-15 08:49:45

Find

Time of First Successful Submission: 2025-12-15 08:59:05

Piping Echo

Time of First Successful Submission: 2025-12-15 09:51:53

Piping Stdout

Time of First Successful Submission: 2025-12-15 09:52:42

Piping Stdin

Time of First Successful Submission: 2025-12-15 09:56:57


Start Here

11 / 12 7327 / 43262


Using the Terminal

Time of First Successful Submission: 2025-09-03 04:50:46

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-31 18:13:42

Using the GUI Desktop

Time of First Successful Submission: 2025-05-31 18:19:33

Pasting into the Desktop

Time of First Successful Submission: 2025-05-31 18:29:10

Restarting Challenges

Time of First Successful Submission: 2025-05-31 18:36:13

Challenge Programs

Time of First Successful Submission: 2025-09-03 04:54:30

The Flag File

Time of First Successful Submission: 2025-09-03 04:56:19

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 07:26:41

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 07:23:57

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 07:24:50


Linux Luminarium

128 / 128 895 / 32345


Intro to Commands

Time of First Successful Submission: 2025-12-15 07:29:32

Intro to Arguments

Time of First Successful Submission: 2025-12-15 07:30:01

Command History

Time of First Successful Submission: 2025-12-15 07:30:35

The Root

Time of First Successful Submission: 2025-12-15 07:31:34

Program and absolute paths

Time of First Successful Submission: 2025-12-15 07:33:27

Position thy self

Time of First Successful Submission: 2025-12-15 07:34:03

Position elsewhere

Time of First Successful Submission: 2025-12-15 07:35:33

implicit relative paths, from /

Time of First Successful Submission: 2025-12-15 07:37:35

explicit relative paths, from /

Time of First Successful Submission: 2025-12-15 07:38:25

implicit relative path

Time of First Successful Submission: 2025-12-15 07:39:11

home sweet home

Time of First Successful Submission: 2025-12-15 07:40:34

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-15 08:42:47

catting absolute paths

Time of First Successful Submission: 2025-12-15 08:43:12

more catting practice

Time of First Successful Submission: 2025-12-15 08:44:04

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-15 08:44:44

comparing files

Time of First Successful Submission: 2025-12-15 08:45:23

listing files

Time of First Successful Submission: 2025-12-15 08:46:26

touching files

Time of First Successful Submission: 2025-12-15 08:47:09

removing files

Time of First Successful Submission: 2025-12-15 08:47:48

moving files

Time of First Successful Submission: 2025-12-15 08:48:35

copying files

Time of First Successful Submission: 2025-12-15 08:49:14

hidden files

Time of First Successful Submission: 2025-12-15 08:49:45

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-15 08:56:21

making directories

Time of First Successful Submission: 2025-12-15 08:57:18

finding files

Time of First Successful Submission: 2025-12-15 08:59:05

linking files

Time of First Successful Submission: 2025-12-15 09:00:31

Learning From Documentation

Time of First Successful Submission: 2025-12-15 09:09:32

Learning Complex Usage

Time of First Successful Submission: 2025-12-15 09:10:22

Reading Manuals

Time of First Successful Submission: 2025-12-15 09:12:53

Searching Manuals

Time of First Successful Submission: 2025-12-15 09:14:50

Searching For Manuals

Time of First Successful Submission: 2025-12-15 09:25:24

Helpful Programs

Time of First Successful Submission: 2025-12-15 09:26:23

Help for Builtins

Time of First Successful Submission: 2025-12-15 09:28:26

Matching with *

Time of First Successful Submission: 2025-12-15 09:33:50

Matching with ?

Time of First Successful Submission: 2025-12-15 09:35:17

Matching with []

Time of First Successful Submission: 2025-12-15 09:37:03

Matching paths with []

Time of First Successful Submission: 2025-12-15 09:39:48

Multiple globs

Time of First Successful Submission: 2025-12-15 09:41:28

Mixing globs

Time of First Successful Submission: 2025-12-15 09:44:48

Exclusionary globbing

Time of First Successful Submission: 2025-12-15 09:46:57

Tab completion

Time of First Successful Submission: 2025-12-15 09:48:52

Multiple options for tab completion

Time of First Successful Submission: 2025-12-15 09:49:56

Tab completion on commands

Time of First Successful Submission: 2025-12-15 09:50:34

Redirecting output

Time of First Successful Submission: 2025-12-15 09:51:53

Redirecting more output

Time of First Successful Submission: 2025-12-15 09:52:42

Appending output

Time of First Successful Submission: 2025-12-15 09:54:34

Redirecting errors

Time of First Successful Submission: 2025-12-15 09:55:50

Redirecting input

Time of First Successful Submission: 2025-12-15 09:56:57

Grepping stored results

Time of First Successful Submission: 2025-12-15 09:57:43

Grepping live output

Time of First Successful Submission: 2025-12-15 09:58:14

Grepping errors

Time of First Successful Submission: 2025-12-15 10:08:52

Filtering with grep -v

Time of First Successful Submission: 2025-12-15 10:09:31

Filtering with sed

Time of First Successful Submission: 2025-12-15 10:10:28

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-15 10:14:01

Process substitution for input

Time of First Successful Submission: 2025-12-15 10:19:30

Writing to multiple programs

Time of First Successful Submission: 2025-12-15 10:27:05

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-15 10:29:09

Named pipes

Time of First Successful Submission: 2025-12-15 10:45:35

Printing Variables

Time of First Successful Submission: 2025-12-15 10:47:51

Setting Variables

Time of First Successful Submission: 2025-12-15 10:48:45

Multi-word Variables

Time of First Successful Submission: 2025-12-15 10:53:12

Exporting Variables

Time of First Successful Submission: 2025-12-15 10:59:07

Printing Exported Variables

Time of First Successful Submission: 2025-12-15 10:59:50

Storing Command Output

Time of First Successful Submission: 2025-12-15 11:01:53

Reading Input

Time of First Successful Submission: 2025-12-15 11:02:56

Reading Files

Time of First Successful Submission: 2025-12-15 11:05:47

Translating characters

Time of First Successful Submission: 2025-12-15 11:17:48

Deleting characters

Time of First Successful Submission: 2025-12-15 11:18:25

Deleting newlines

Time of First Successful Submission: 2025-12-15 11:31:29

Extracting the first lines with head

Time of First Successful Submission: 2025-12-16 05:11:55

Extracting specific sections of text

Time of First Successful Submission: 2025-12-16 05:14:42

Sorting data

Time of First Successful Submission: 2025-12-16 05:15:54

Listing Processes

Time of First Successful Submission: 2025-12-16 05:21:24

Killing Processes

Time of First Successful Submission: 2025-12-16 05:23:17

Interrupting Processes

Time of First Successful Submission: 2025-12-16 05:25:40

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-16 05:29:00

Suspending Processes

Time of First Successful Submission: 2025-12-16 05:36:17

Resuming Processes

Time of First Successful Submission: 2025-12-16 05:37:08

Backgrounding Processes

Time of First Successful Submission: 2025-12-16 05:43:35

Foregrounding Processes

Time of First Successful Submission: 2025-12-16 05:44:28

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-16 05:45:49

Process Exit Codes

Time of First Successful Submission: 2025-12-16 05:48:17

Becoming root with su

Time of First Successful Submission: 2025-12-16 05:52:20

Other users with su

Time of First Successful Submission: 2025-12-16 05:53:32

Cracking passwords

Time of First Successful Submission: 2025-12-16 05:58:56

Using sudo

Time of First Successful Submission: 2025-12-16 06:00:45

Changing File Ownership

Time of First Successful Submission: 2025-12-16 06:03:27

Groups and Files

Time of First Successful Submission: 2025-12-16 06:09:42

Fun With Groups Names

Time of First Successful Submission: 2025-12-16 06:11:03

Changing Permissions

Time of First Successful Submission: 2025-12-16 06:13:07

Executable Files

Time of First Successful Submission: 2025-12-16 06:14:26

Permission Tweaking Practice

Time of First Successful Submission: 2025-12-16 06:18:21

Permissions Setting Practice

Time of First Successful Submission: 2025-12-16 06:24:16

The SUID Bit

Time of First Successful Submission: 2025-12-16 06:25:15

Chaining with Semicolons

Time of First Successful Submission: 2025-12-16 06:26:30

Building on Success

Time of First Successful Submission: 2025-12-16 06:27:20

Handling Failure

Time of First Successful Submission: 2025-12-16 06:28:05

Your First Shell Script

Time of First Successful Submission: 2025-12-16 06:32:08

Redirecting Script Output

Time of First Successful Submission: 2025-12-16 06:50:14

Executable Shell Scripts

Time of First Successful Submission: 2025-12-16 06:53:30

Understanding Shebangs

Time of First Successful Submission: 2025-12-16 06:54:47

Scripting with Arguments

Time of First Successful Submission: 2025-12-16 06:55:58

Scripting with Conditionals

Time of First Successful Submission: 2025-12-16 06:57:43

Scripting with Default Cases

Time of First Successful Submission: 2025-12-16 06:58:42

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-16 07:01:15

Reading Shell Scripts

Time of First Successful Submission: 2025-12-16 07:02:19

Launching Screen

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

Detaching and Attaching

Time of First Successful Submission: 2025-12-16 07:09:11

Finding Sessions

Time of First Successful Submission: 2025-12-16 07:11:12

Switching Windows

Time of First Successful Submission: 2025-12-16 07:12:19

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-16 07:14:36

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-16 07:21:49

The PATH Variable

Time of First Successful Submission: 2025-12-16 07:23:22

Setting PATH

Time of First Successful Submission: 2025-12-16 07:24:08

Finding Commands

Time of First Successful Submission: 2025-12-16 07:25:07

Adding Commands

Time of First Successful Submission: 2025-12-16 07:34:07

Hijacking Commands

Time of First Successful Submission: 2025-12-16 07:32:48

Bashrc Backdoor

Time of First Successful Submission: 2025-12-16 07:36:36

Sniffing Input

Time of First Successful Submission: 2025-12-16 07:40:19

Overshared Directories

Time of First Successful Submission: 2025-12-16 07:57:22

Tricky Linking

Time of First Successful Submission: 2025-12-16 08:03:50

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-16 09:04:42

Snooping on Configurations

Time of First Successful Submission: 2025-12-16 09:07:34

The Fork Bomb

Time of First Successful Submission: 2025-12-16 09:21:46

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-16 09:29:29

rm -rf /

Time of First Successful Submission: 2025-12-16 10:46:08

Life after rm -rf /

Time of First Successful Submission: 2025-12-16 11:35:14

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-16 11:39:23


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-23 05:14:41

Your First Syscall

Time of First Successful Submission: 2025-12-23 05:24:09

Exit Codes

Time of First Successful Submission: 2025-12-23 05:34:53

Building Executables

Time of First Successful Submission: 2025-12-23 05:58:30

Moving Between Registers

Time of First Successful Submission: 2025-12-23 06:11:08

Loading From Memory

Time of First Successful Submission: 2025-12-23 06:45:45

More Loading Practice

Time of First Successful Submission: 2025-12-23 06:53:44

Dereferencing Pointers

Time of First Successful Submission: 2025-12-23 07:01:11

Dereferencing Yourself

Time of First Successful Submission: 2025-12-23 07:06:17

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-23 07:15:38

Stored Addresses

Time of First Successful Submission: 2025-12-23 07:21:36

Double Dereference

Time of First Successful Submission: 2025-12-23 07:30:13

Tracing Syscalls

Time of First Successful Submission: 2025-12-23 06:28:02

Starting GDB

Time of First Successful Submission: 2025-12-23 06:30:03

Starting Programs in GDB

Time of First Successful Submission: 2025-12-23 06:31:32

Writing Output

Time of First Successful Submission: 2025-12-23 09:23:44

Chaining Syscalls

Time of First Successful Submission: 2025-12-23 09:36:43

Writing Strings

Time of First Successful Submission: 2025-12-23 09:42:47

Reading Data

Time of First Successful Submission: 2025-12-23 09:54:18

set-register

Time of First Successful Submission: 2025-12-26 09:22:01

set-multiple-registers

Time of First Successful Submission: 2025-12-26 09:25:44

add-to-register

Time of First Successful Submission: 2025-12-26 09:29:41

linear-equation-registers

Time of First Successful Submission: 2025-12-26 09:33:41

integer-division

Time of First Successful Submission: 2025-12-26 09:50:47

modulo-operation

Time of First Successful Submission: 2025-12-26 10:03:28

set-upper-byte

Time of First Successful Submission: 2025-12-26 10:50:59

efficient-modulo

Time of First Successful Submission: 2025-12-26 11:05:58

byte-extraction

Time of First Successful Submission: 2025-12-26 11:31:45

bitwise-and

Time of First Successful Submission: 2025-12-26 12:47:11

check-even

Time of First Successful Submission: 2025-12-26 13:05:20

memory-read

Time of First Successful Submission: 2025-12-26 13:09:53

memory-write

Time of First Successful Submission: 2025-12-26 13:11:49

memory-increment

Time of First Successful Submission: 2025-12-26 13:15:25

byte-access

Time of First Successful Submission: 2025-12-29 04:54:41

memory-size-access

Time of First Successful Submission: 2025-12-29 04:58:44

little-endian-write

Time of First Successful Submission: 2025-12-29 05:31:11

memory-sum

Time of First Successful Submission: 2025-12-29 06:54:37

stack-subtraction

Time of First Successful Submission: 2025-12-29 06:57:55

swap-stack-values

Time of First Successful Submission: 2025-12-29 07:00:37

average-stack-values

Time of First Successful Submission: 2025-12-29 07:18:36

absolute-jump

Time of First Successful Submission: 2025-12-29 08:48:59

relative-jump

Time of First Successful Submission: 2025-12-29 09:18:19

jump-trampoline

Time of First Successful Submission: 2025-12-30 16:16:49


GCA CTF

11 / 104 7486 / 43539


Using the Terminal

Time of First Successful Submission: 2025-09-03 04:50:46

Using the VSCode Workspace

Time of First Successful Submission: 2025-05-31 18:13:42

Using the GUI Desktop

Time of First Successful Submission: 2025-05-31 18:19:33

Pasting into the Desktop

Time of First Successful Submission: 2025-05-31 18:29:10

Restarting Challenges

Time of First Successful Submission: 2025-05-31 18:36:13

Getting Help

Time of First Successful Submission: 2025-09-03 04:53:09

Challenge Programs

Time of First Successful Submission: 2025-09-03 04:54:30

The Flag File

Time of First Successful Submission: 2025-09-03 04:56:19

Using Privileged Mode

Time of First Successful Submission: 2025-12-15 07:26:41

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-15 07:23:57

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-15 07:24:50