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1 / 202 21636 / 22791


Triple Dereference

Time of First Successful Submission: 2025-11-28 15:07:45


Intro to Programming Languages

15 / 234 6395 / 31920


Commands

Time of First Successful Submission: 2025-11-26 00:43:38

Command Arguments

Time of First Successful Submission: 2025-11-26 00:44:23

Command History

Time of First Successful Submission: 2025-11-26 00:45:05

The Root Path

Time of First Successful Submission: 2025-11-26 00:50:54

Absolute Paths

Time of First Successful Submission: 2025-11-26 00:51:25

Changing position

Time of First Successful Submission: 2025-11-26 00:52:17

Changing to an Absolute Path

Time of First Successful Submission: 2025-11-26 00:53:34

Relative Paths

Time of First Successful Submission: 2025-11-26 00:54:26

Cat

Time of First Successful Submission: 2025-11-26 00:58:02

Ls

Time of First Successful Submission: 2025-11-26 01:01:19

Ls All

Time of First Successful Submission: 2025-11-26 01:04:48

Find

Time of First Successful Submission: 2025-11-26 01:13:14

Piping Echo

Time of First Successful Submission: 2025-11-28 03:06:32

Piping Stdout

Time of First Successful Submission: 2025-11-28 03:07:10

Piping Stdin

Time of First Successful Submission: 2025-11-28 03:26:19


Start Here

12 / 12 198 / 43238


Using the Terminal

Time of First Successful Submission: 2025-11-26 00:15:47

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-26 00:17:43

Using the GUI Desktop

Time of First Successful Submission: 2025-11-26 00:19:36

Pasting into the Desktop

Time of First Successful Submission: 2025-11-26 00:21:13

Restarting Challenges

Time of First Successful Submission: 2025-11-26 00:25:33

Challenge Programs

Time of First Successful Submission: 2025-11-26 00:29:56

The Flag File

Time of First Successful Submission: 2025-11-26 00:31:24

Using Privileged Mode

Time of First Successful Submission: 2025-11-26 00:33:18

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-26 00:34:32

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-26 00:35:14


Linux Luminarium

128 / 128 597 / 32329


Intro to Commands

Time of First Successful Submission: 2025-11-26 00:43:38

Intro to Arguments

Time of First Successful Submission: 2025-11-26 00:44:23

Command History

Time of First Successful Submission: 2025-11-26 00:45:05

The Root

Time of First Successful Submission: 2025-11-26 00:50:54

Program and absolute paths

Time of First Successful Submission: 2025-11-26 00:51:25

Position thy self

Time of First Successful Submission: 2025-11-26 00:52:17

Position elsewhere

Time of First Successful Submission: 2025-11-26 00:53:34

implicit relative paths, from /

Time of First Successful Submission: 2025-11-26 00:54:26

explicit relative paths, from /

Time of First Successful Submission: 2025-11-26 00:55:11

implicit relative path

Time of First Successful Submission: 2025-11-26 00:56:04

home sweet home

Time of First Successful Submission: 2025-11-26 00:57:29

cat: not the pet, but the command!

Time of First Successful Submission: 2025-11-26 00:58:02

catting absolute paths

Time of First Successful Submission: 2025-11-26 00:58:27

more catting practice

Time of First Successful Submission: 2025-11-26 00:59:04

grepping for a needle in a haystack

Time of First Successful Submission: 2025-11-26 00:59:48

comparing files

Time of First Successful Submission: 2025-11-26 01:00:32

listing files

Time of First Successful Submission: 2025-11-26 01:01:19

touching files

Time of First Successful Submission: 2025-11-26 01:01:50

removing files

Time of First Successful Submission: 2025-11-26 01:02:46

moving files

Time of First Successful Submission: 2025-11-26 01:03:34

copying files

Time of First Successful Submission: 2025-11-26 01:04:04

hidden files

Time of First Successful Submission: 2025-11-26 01:04:48

An Epic Filesystem Quest

Time of First Successful Submission: 2025-11-26 01:08:15

making directories

Time of First Successful Submission: 2025-11-26 01:11:08

finding files

Time of First Successful Submission: 2025-11-26 01:13:14

linking files

Time of First Successful Submission: 2025-11-26 01:25:05

Learning From Documentation

Time of First Successful Submission: 2025-11-26 01:28:27

Learning Complex Usage

Time of First Successful Submission: 2025-11-26 01:30:20

Reading Manuals

Time of First Successful Submission: 2025-11-26 01:35:22

Searching Manuals

Time of First Successful Submission: 2025-11-26 01:36:58

Searching For Manuals

Time of First Successful Submission: 2025-11-28 02:44:54

Helpful Programs

Time of First Successful Submission: 2025-11-28 02:46:13

Help for Builtins

Time of First Successful Submission: 2025-11-28 02:47:15

Matching with *

Time of First Successful Submission: 2025-11-28 02:49:51

Matching with ?

Time of First Successful Submission: 2025-11-28 02:50:42

Matching with []

Time of First Successful Submission: 2025-11-28 02:53:52

Matching paths with []

Time of First Successful Submission: 2025-11-28 02:55:28

Multiple globs

Time of First Successful Submission: 2025-11-28 02:57:50

Mixing globs

Time of First Successful Submission: 2025-11-28 02:59:55

Exclusionary globbing

Time of First Successful Submission: 2025-11-28 03:00:58

Tab completion

Time of First Successful Submission: 2025-11-28 03:01:51

Multiple options for tab completion

Time of First Successful Submission: 2025-11-28 03:03:23

Tab completion on commands

Time of First Successful Submission: 2025-11-28 03:03:53

Redirecting output

Time of First Successful Submission: 2025-11-28 03:06:32

Redirecting more output

Time of First Successful Submission: 2025-11-28 03:07:10

Appending output

Time of First Successful Submission: 2025-11-28 03:08:51

Redirecting errors

Time of First Successful Submission: 2025-11-28 03:25:19

Redirecting input

Time of First Successful Submission: 2025-11-28 03:26:19

Grepping stored results

Time of First Successful Submission: 2025-11-28 03:32:07

Grepping live output

Time of First Successful Submission: 2025-11-28 03:32:45

Grepping errors

Time of First Successful Submission: 2025-11-28 03:34:47

Filtering with grep -v

Time of First Successful Submission: 2025-11-28 03:36:20

Filtering with sed

Time of First Successful Submission: 2025-11-28 03:37:21

Duplicating piped data with tee

Time of First Successful Submission: 2025-11-28 03:42:00

Process substitution for input

Time of First Successful Submission: 2025-11-28 03:48:41

Writing to multiple programs

Time of First Successful Submission: 2025-11-28 03:54:05

Split-piping stderr and stdout

Time of First Successful Submission: 2025-11-28 03:58:19

Named pipes

Time of First Successful Submission: 2025-11-28 04:05:56

Printing Variables

Time of First Successful Submission: 2025-11-28 04:07:54

Setting Variables

Time of First Successful Submission: 2025-11-28 04:09:26

Multi-word Variables

Time of First Successful Submission: 2025-11-28 04:11:44

Exporting Variables

Time of First Successful Submission: 2025-11-28 04:13:54

Printing Exported Variables

Time of First Successful Submission: 2025-11-28 04:14:34

Storing Command Output

Time of First Successful Submission: 2025-11-28 04:16:18

Reading Input

Time of First Successful Submission: 2025-11-28 04:18:36

Reading Files

Time of First Successful Submission: 2025-11-28 04:20:44

Translating characters

Time of First Successful Submission: 2025-11-28 04:28:57

Deleting characters

Time of First Successful Submission: 2025-11-28 04:29:58

Deleting newlines

Time of First Successful Submission: 2025-11-28 04:31:45

Extracting the first lines with head

Time of First Successful Submission: 2025-11-28 04:32:53

Extracting specific sections of text

Time of First Successful Submission: 2025-11-28 04:35:28

Sorting data

Time of First Successful Submission: 2025-11-28 04:36:54

Listing Processes

Time of First Successful Submission: 2025-11-28 04:45:43

Killing Processes

Time of First Successful Submission: 2025-11-28 04:47:16

Interrupting Processes

Time of First Successful Submission: 2025-11-28 04:48:23

Killing Misbehaving Processes

Time of First Successful Submission: 2025-11-28 04:51:17

Suspending Processes

Time of First Successful Submission: 2025-11-28 04:54:47

Resuming Processes

Time of First Successful Submission: 2025-11-28 04:55:55

Backgrounding Processes

Time of First Successful Submission: 2025-11-28 05:00:10

Foregrounding Processes

Time of First Successful Submission: 2025-11-28 05:01:03

Starting Backgrounded Processes

Time of First Successful Submission: 2025-11-28 05:02:12

Process Exit Codes

Time of First Successful Submission: 2025-11-28 05:03:55

Becoming root with su

Time of First Successful Submission: 2025-11-28 05:08:46

Other users with su

Time of First Successful Submission: 2025-11-28 05:09:27

Cracking passwords

Time of First Successful Submission: 2025-11-28 05:13:06

Using sudo

Time of First Successful Submission: 2025-11-28 05:15:42

Changing File Ownership

Time of First Successful Submission: 2025-11-28 06:50:36

Groups and Files

Time of First Successful Submission: 2025-11-28 06:53:06

Fun With Groups Names

Time of First Successful Submission: 2025-11-28 06:54:22

Changing Permissions

Time of First Successful Submission: 2025-11-28 06:58:52

Executable Files

Time of First Successful Submission: 2025-11-28 07:02:19

Permission Tweaking Practice

Time of First Successful Submission: 2025-11-28 07:11:26

Permissions Setting Practice

Time of First Successful Submission: 2025-11-28 07:15:18

The SUID Bit

Time of First Successful Submission: 2025-11-28 07:17:30

Chaining with Semicolons

Time of First Successful Submission: 2025-11-28 07:20:59

Building on Success

Time of First Successful Submission: 2025-11-28 07:21:48

Handling Failure

Time of First Successful Submission: 2025-11-28 07:22:53

Your First Shell Script

Time of First Successful Submission: 2025-11-28 07:24:32

Redirecting Script Output

Time of First Successful Submission: 2025-11-28 07:27:30

Executable Shell Scripts

Time of First Successful Submission: 2025-11-28 07:29:06

Understanding Shebangs

Time of First Successful Submission: 2025-11-28 07:50:58

Scripting with Arguments

Time of First Successful Submission: 2025-11-28 07:52:19

Scripting with Conditionals

Time of First Successful Submission: 2025-11-28 07:53:49

Scripting with Default Cases

Time of First Successful Submission: 2025-11-28 07:54:46

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-28 07:56:07

Reading Shell Scripts

Time of First Successful Submission: 2025-11-28 07:58:03

Launching Screen

Time of First Successful Submission: 2025-11-28 07:59:08

Detaching and Attaching

Time of First Successful Submission: 2025-11-28 08:00:18

Finding Sessions

Time of First Successful Submission: 2025-11-28 08:01:36

Switching Windows

Time of First Successful Submission: 2025-11-28 08:02:49

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-28 08:03:27

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-28 08:03:59

The PATH Variable

Time of First Successful Submission: 2025-11-28 08:07:13

Setting PATH

Time of First Successful Submission: 2025-11-28 08:08:05

Finding Commands

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

Adding Commands

Time of First Successful Submission: 2025-11-28 08:16:20

Hijacking Commands

Time of First Successful Submission: 2025-11-28 08:27:26

Bashrc Backdoor

Time of First Successful Submission: 2025-11-28 08:31:12

Sniffing Input

Time of First Successful Submission: 2025-11-28 08:43:23

Overshared Directories

Time of First Successful Submission: 2025-11-28 08:48:27

Tricky Linking

Time of First Successful Submission: 2025-11-28 09:08:23

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-28 09:12:28

Snooping on Configurations

Time of First Successful Submission: 2025-11-28 09:15:11

The Fork Bomb

Time of First Successful Submission: 2025-11-28 09:29:24

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-28 09:31:10

rm -rf /

Time of First Successful Submission: 2025-11-28 09:35:01

Life after rm -rf /

Time of First Successful Submission: 2025-11-28 09:37:25

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-28 11:31:13


Computing 101

48 / 94 6674 / 21487


Your First Register

Time of First Successful Submission: 2025-11-28 12:30:12

Your First Syscall

Time of First Successful Submission: 2025-11-28 12:35:01

Exit Codes

Time of First Successful Submission: 2025-11-28 12:36:34

Building Executables

Time of First Successful Submission: 2025-11-28 12:53:13

Moving Between Registers

Time of First Successful Submission: 2025-11-28 13:00:05

Loading From Memory

Time of First Successful Submission: 2025-11-28 14:32:05

More Loading Practice

Time of First Successful Submission: 2025-11-28 14:34:53

Dereferencing Pointers

Time of First Successful Submission: 2025-11-28 14:40:39

Dereferencing Yourself

Time of First Successful Submission: 2025-11-28 14:46:18

Dereferencing with Offsets

Time of First Successful Submission: 2025-11-28 14:50:05

Stored Addresses

Time of First Successful Submission: 2025-11-28 15:02:54

Double Dereference

Time of First Successful Submission: 2025-11-28 15:05:45

Tracing Syscalls

Time of First Successful Submission: 2025-11-28 13:49:10

Starting GDB

Time of First Successful Submission: 2025-11-28 13:51:08

Starting Programs in GDB

Time of First Successful Submission: 2025-11-28 13:52:47

Writing Output

Time of First Successful Submission: 2025-11-28 15:39:11

Chaining Syscalls

Time of First Successful Submission: 2025-11-28 15:40:39

Writing Strings

Time of First Successful Submission: 2025-11-28 15:43:09

Reading Data

Time of First Successful Submission: 2025-11-28 15:47:00

set-register

Time of First Successful Submission: 2025-11-28 16:17:13

set-multiple-registers

Time of First Successful Submission: 2025-11-28 16:19:21

add-to-register

Time of First Successful Submission: 2025-11-28 16:20:35

linear-equation-registers

Time of First Successful Submission: 2025-11-28 16:22:32

integer-division

Time of First Successful Submission: 2025-11-28 16:27:48

modulo-operation

Time of First Successful Submission: 2025-11-28 16:33:28

set-upper-byte

Time of First Successful Submission: 2025-11-28 16:35:17

efficient-modulo

Time of First Successful Submission: 2025-11-28 17:39:06

byte-extraction

Time of First Successful Submission: 2025-11-28 17:56:31

bitwise-and

Time of First Successful Submission: 2025-11-28 17:59:11

check-even

Time of First Successful Submission: 2025-11-28 18:05:27

memory-read

Time of First Successful Submission: 2025-11-28 18:09:15

memory-write

Time of First Successful Submission: 2025-11-28 18:10:04

memory-increment

Time of First Successful Submission: 2025-11-28 18:12:09

byte-access

Time of First Successful Submission: 2025-11-28 18:14:35

memory-size-access

Time of First Successful Submission: 2025-11-28 18:16:11

little-endian-write

Time of First Successful Submission: 2025-11-28 18:23:20

memory-sum

Time of First Successful Submission: 2025-11-28 18:30:06

stack-subtraction

Time of First Successful Submission: 2025-11-28 18:32:48

swap-stack-values

Time of First Successful Submission: 2025-11-28 18:34:05

average-stack-values

Time of First Successful Submission: 2025-11-29 03:16:24

absolute-jump

Time of First Successful Submission: 2025-11-29 03:18:15

relative-jump

Time of First Successful Submission: 2025-11-29 03:26:07

jump-trampoline

Time of First Successful Submission: 2025-11-29 03:34:50

conditional-jump

Time of First Successful Submission: 2025-11-29 03:56:03

indirect-jump

Time of First Successful Submission: 2025-11-29 04:44:15

average-loop

Time of First Successful Submission: 2025-11-29 04:52:57

count-non-zero

Time of First Successful Submission: 2025-11-29 05:18:36

string-lower

Time of First Successful Submission: 2025-11-29 14:00:46


GCA CTF

12 / 104 501 / 43515


Using the Terminal

Time of First Successful Submission: 2025-11-26 00:15:47

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-26 00:17:43

Using the GUI Desktop

Time of First Successful Submission: 2025-11-26 00:19:36

Pasting into the Desktop

Time of First Successful Submission: 2025-11-26 00:21:13

Connecting over SSH

Time of First Successful Submission: 2025-11-26 00:22:07

Restarting Challenges

Time of First Successful Submission: 2025-11-26 00:25:33

Getting Help

Time of First Successful Submission: 2025-11-26 00:28:43

Challenge Programs

Time of First Successful Submission: 2025-11-26 00:29:56

The Flag File

Time of First Successful Submission: 2025-11-26 00:31:24

Using Privileged Mode

Time of First Successful Submission: 2025-11-26 00:33:18

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-26 00:34:32

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-26 00:35:14