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1 / 202 21999 / 22791


Triple Dereference

Time of First Successful Submission: 2025-12-24 16:27:46


Intro to Programming Languages

15 / 234 6646 / 31932


Commands

Time of First Successful Submission: 2025-12-04 16:11:43

Command Arguments

Time of First Successful Submission: 2025-12-04 16:13:52

Command History

Time of First Successful Submission: 2025-12-04 16:14:42

The Root Path

Time of First Successful Submission: 2025-12-04 16:36:05

Absolute Paths

Time of First Successful Submission: 2025-12-04 16:36:58

Changing position

Time of First Successful Submission: 2025-12-04 16:39:35

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-04 16:44:17

Relative Paths

Time of First Successful Submission: 2025-12-04 16:47:27

Cat

Time of First Successful Submission: 2025-12-05 15:32:33

Ls

Time of First Successful Submission: 2025-12-05 15:39:51

Ls All

Time of First Successful Submission: 2025-12-05 15:53:33

Find

Time of First Successful Submission: 2025-12-05 16:11:31

Piping Echo

Time of First Successful Submission: 2025-12-09 16:13:03

Piping Stdout

Time of First Successful Submission: 2025-12-09 16:14:24

Piping Stdin

Time of First Successful Submission: 2025-12-09 20:44:08


Intro to Cybersecurity

1 / 183 19749 / 20008


Path Traversal 1

Time of First Successful Submission: 2025-12-29 18:57:46


Start Here

11 / 12 7412 / 43252


Using the Terminal

Time of First Successful Submission: 2025-11-29 14:13:36

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-29 14:16:27

Using the GUI Desktop

Time of First Successful Submission: 2025-11-29 14:18:31

Pasting into the Desktop

Time of First Successful Submission: 2025-11-30 16:53:24

Restarting Challenges

Time of First Successful Submission: 2025-12-04 15:52:23

Challenge Programs

Time of First Successful Submission: 2025-12-20 16:39:34

The Flag File

Time of First Successful Submission: 2025-12-20 16:40:41

Using Privileged Mode

Time of First Successful Submission: 2025-12-22 01:44:49

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-22 01:49:45

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-22 01:50:32


Linux Luminarium

128 / 128 951 / 32341


Intro to Commands

Time of First Successful Submission: 2025-12-04 16:11:43

Intro to Arguments

Time of First Successful Submission: 2025-12-04 16:13:52

Command History

Time of First Successful Submission: 2025-12-04 16:14:42

The Root

Time of First Successful Submission: 2025-12-04 16:36:05

Program and absolute paths

Time of First Successful Submission: 2025-12-04 16:36:58

Position thy self

Time of First Successful Submission: 2025-12-04 16:39:35

Position elsewhere

Time of First Successful Submission: 2025-12-04 16:44:17

implicit relative paths, from /

Time of First Successful Submission: 2025-12-04 16:47:27

explicit relative paths, from /

Time of First Successful Submission: 2025-12-04 16:48:49

implicit relative path

Time of First Successful Submission: 2025-12-04 16:50:09

home sweet home

Time of First Successful Submission: 2025-12-04 17:00:04

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-05 15:32:33

catting absolute paths

Time of First Successful Submission: 2025-12-05 15:33:24

more catting practice

Time of First Successful Submission: 2025-12-05 15:34:30

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-05 15:35:28

comparing files

Time of First Successful Submission: 2025-12-05 15:37:21

listing files

Time of First Successful Submission: 2025-12-05 15:39:51

touching files

Time of First Successful Submission: 2025-12-05 15:41:16

removing files

Time of First Successful Submission: 2025-12-05 15:42:19

moving files

Time of First Successful Submission: 2025-12-05 15:45:22

copying files

Time of First Successful Submission: 2025-12-05 15:46:19

hidden files

Time of First Successful Submission: 2025-12-05 15:53:33

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-05 16:02:01

making directories

Time of First Successful Submission: 2025-12-05 16:04:25

finding files

Time of First Successful Submission: 2025-12-05 16:11:31

linking files

Time of First Successful Submission: 2025-12-05 16:31:36

Learning From Documentation

Time of First Successful Submission: 2025-12-06 14:49:09

Learning Complex Usage

Time of First Successful Submission: 2025-12-06 15:02:23

Reading Manuals

Time of First Successful Submission: 2025-12-06 15:08:21

Searching Manuals

Time of First Successful Submission: 2025-12-06 15:09:57

Searching For Manuals

Time of First Successful Submission: 2025-12-06 15:15:56

Helpful Programs

Time of First Successful Submission: 2025-12-06 15:17:31

Help for Builtins

Time of First Successful Submission: 2025-12-06 15:20:18

Matching with *

Time of First Successful Submission: 2025-12-07 15:40:10

Matching with ?

Time of First Successful Submission: 2025-12-07 15:41:10

Matching with []

Time of First Successful Submission: 2025-12-07 15:43:12

Matching paths with []

Time of First Successful Submission: 2025-12-07 15:44:43

Multiple globs

Time of First Successful Submission: 2025-12-07 15:46:54

Mixing globs

Time of First Successful Submission: 2025-12-07 15:50:45

Exclusionary globbing

Time of First Successful Submission: 2025-12-07 15:52:23

Tab completion

Time of First Successful Submission: 2025-12-07 15:54:36

Multiple options for tab completion

Time of First Successful Submission: 2025-12-07 15:58:11

Tab completion on commands

Time of First Successful Submission: 2025-12-07 15:58:50

Redirecting output

Time of First Successful Submission: 2025-12-09 16:13:03

Redirecting more output

Time of First Successful Submission: 2025-12-09 16:14:24

Appending output

Time of First Successful Submission: 2025-12-09 16:17:28

Redirecting errors

Time of First Successful Submission: 2025-12-09 16:22:35

Redirecting input

Time of First Successful Submission: 2025-12-09 20:44:08

Grepping stored results

Time of First Successful Submission: 2025-12-09 21:11:14

Grepping live output

Time of First Successful Submission: 2025-12-09 21:12:42

Grepping errors

Time of First Successful Submission: 2025-12-09 21:15:14

Filtering with grep -v

Time of First Successful Submission: 2025-12-09 21:16:29

Filtering with sed

Time of First Successful Submission: 2025-12-09 21:18:04

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-09 21:35:43

Process substitution for input

Time of First Successful Submission: 2025-12-09 21:39:27

Writing to multiple programs

Time of First Successful Submission: 2025-12-09 21:56:02

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-09 22:02:10

Named pipes

Time of First Successful Submission: 2025-12-09 22:08:52

Printing Variables

Time of First Successful Submission: 2025-12-10 17:16:37

Setting Variables

Time of First Successful Submission: 2025-12-10 17:18:11

Multi-word Variables

Time of First Successful Submission: 2025-12-10 17:20:23

Exporting Variables

Time of First Successful Submission: 2025-12-10 17:23:14

Printing Exported Variables

Time of First Successful Submission: 2025-12-10 17:23:46

Storing Command Output

Time of First Successful Submission: 2025-12-10 17:26:31

Reading Input

Time of First Successful Submission: 2025-12-10 17:35:45

Reading Files

Time of First Successful Submission: 2025-12-10 17:38:39

Translating characters

Time of First Successful Submission: 2025-12-10 17:46:50

Deleting characters

Time of First Successful Submission: 2025-12-10 17:50:31

Deleting newlines

Time of First Successful Submission: 2025-12-10 17:54:11

Extracting the first lines with head

Time of First Successful Submission: 2025-12-10 17:55:57

Extracting specific sections of text

Time of First Successful Submission: 2025-12-10 17:58:58

Sorting data

Time of First Successful Submission: 2025-12-10 18:00:31

Listing Processes

Time of First Successful Submission: 2025-12-11 19:47:39

Killing Processes

Time of First Successful Submission: 2025-12-12 18:24:59

Interrupting Processes

Time of First Successful Submission: 2025-12-12 18:25:45

Killing Misbehaving Processes

Time of First Successful Submission: 2025-12-12 18:35:40

Suspending Processes

Time of First Successful Submission: 2025-12-12 18:37:32

Resuming Processes

Time of First Successful Submission: 2025-12-12 18:38:23

Backgrounding Processes

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

Foregrounding Processes

Time of First Successful Submission: 2025-12-12 18:43:16

Starting Backgrounded Processes

Time of First Successful Submission: 2025-12-12 18:44:05

Process Exit Codes

Time of First Successful Submission: 2025-12-12 18:46:20

Becoming root with su

Time of First Successful Submission: 2025-12-14 04:29:29

Other users with su

Time of First Successful Submission: 2025-12-14 04:30:16

Cracking passwords

Time of First Successful Submission: 2025-12-14 04:35:13

Using sudo

Time of First Successful Submission: 2025-12-14 04:38:40

Changing File Ownership

Time of First Successful Submission: 2025-12-14 15:55:47

Groups and Files

Time of First Successful Submission: 2025-12-14 15:59:09

Fun With Groups Names

Time of First Successful Submission: 2025-12-14 16:00:39

Changing Permissions

Time of First Successful Submission: 2025-12-14 16:05:26

Executable Files

Time of First Successful Submission: 2025-12-14 16:08:04

Permission Tweaking Practice

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

Permissions Setting Practice

Time of First Successful Submission: 2025-12-14 16:17:50

The SUID Bit

Time of First Successful Submission: 2025-12-14 16:20:30

Chaining with Semicolons

Time of First Successful Submission: 2025-12-17 14:52:35

Building on Success

Time of First Successful Submission: 2025-12-17 14:54:28

Handling Failure

Time of First Successful Submission: 2025-12-17 14:55:45

Your First Shell Script

Time of First Successful Submission: 2025-12-17 15:05:15

Redirecting Script Output

Time of First Successful Submission: 2025-12-17 15:08:46

Executable Shell Scripts

Time of First Successful Submission: 2025-12-17 15:14:39

Understanding Shebangs

Time of First Successful Submission: 2025-12-17 15:18:37

Scripting with Arguments

Time of First Successful Submission: 2025-12-17 15:22:34

Scripting with Conditionals

Time of First Successful Submission: 2025-12-17 15:26:43

Scripting with Default Cases

Time of First Successful Submission: 2025-12-17 15:28:44

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-12-17 15:31:42

Reading Shell Scripts

Time of First Successful Submission: 2025-12-17 15:35:53

Launching Screen

Time of First Successful Submission: 2025-12-17 15:39:35

Detaching and Attaching

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

Finding Sessions

Time of First Successful Submission: 2025-12-17 15:43:00

Switching Windows

Time of First Successful Submission: 2025-12-17 15:44:26

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-12-17 15:45:58

Switching Windows (tmux)

Time of First Successful Submission: 2025-12-17 15:46:37

The PATH Variable

Time of First Successful Submission: 2025-12-17 15:49:32

Setting PATH

Time of First Successful Submission: 2025-12-17 15:54:37

Finding Commands

Time of First Successful Submission: 2025-12-17 15:56:26

Adding Commands

Time of First Successful Submission: 2025-12-17 16:11:35

Hijacking Commands

Time of First Successful Submission: 2025-12-17 16:30:24

Bashrc Backdoor

Time of First Successful Submission: 2025-12-18 15:09:28

Sniffing Input

Time of First Successful Submission: 2025-12-19 21:24:29

Overshared Directories

Time of First Successful Submission: 2025-12-19 21:45:59

Tricky Linking

Time of First Successful Submission: 2025-12-19 22:01:40

Sniffing Process Arguments

Time of First Successful Submission: 2025-12-19 22:05:34

Snooping on Configurations

Time of First Successful Submission: 2025-12-19 22:08:13

The Fork Bomb

Time of First Successful Submission: 2025-12-20 16:13:02

Disk-Space Doomsday

Time of First Successful Submission: 2025-12-20 16:23:53

rm -rf /

Time of First Successful Submission: 2025-12-20 16:27:03

Life after rm -rf /

Time of First Successful Submission: 2025-12-20 16:33:03

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-12-20 16:38:05


Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-23 00:56:33

Your First Syscall

Time of First Successful Submission: 2025-12-23 01:00:17

Exit Codes

Time of First Successful Submission: 2025-12-23 01:18:52

Building Executables

Time of First Successful Submission: 2025-12-23 01:29:36

Moving Between Registers

Time of First Successful Submission: 2025-12-23 01:33:52

Loading From Memory

Time of First Successful Submission: 2025-12-24 16:04:49

More Loading Practice

Time of First Successful Submission: 2025-12-24 16:06:07

Dereferencing Pointers

Time of First Successful Submission: 2025-12-24 16:08:54

Dereferencing Yourself

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

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-24 16:14:54

Stored Addresses

Time of First Successful Submission: 2025-12-24 16:21:20

Double Dereference

Time of First Successful Submission: 2025-12-24 16:26:07

Tracing Syscalls

Time of First Successful Submission: 2025-12-23 01:39:06

Starting GDB

Time of First Successful Submission: 2025-12-23 01:41:05

Starting Programs in GDB

Time of First Successful Submission: 2025-12-23 01:43:36

Writing Output

Time of First Successful Submission: 2025-12-24 19:43:44

Chaining Syscalls

Time of First Successful Submission: 2025-12-24 19:46:21

Writing Strings

Time of First Successful Submission: 2025-12-24 19:47:21

Reading Data

Time of First Successful Submission: 2025-12-24 19:52:20

set-register

Time of First Successful Submission: 2025-12-24 21:27:39

set-multiple-registers

Time of First Successful Submission: 2025-12-24 23:54:58

add-to-register

Time of First Successful Submission: 2025-12-25 00:00:21

linear-equation-registers

Time of First Successful Submission: 2025-12-25 00:08:02

integer-division

Time of First Successful Submission: 2025-12-25 00:25:22

modulo-operation

Time of First Successful Submission: 2025-12-25 23:27:19

set-upper-byte

Time of First Successful Submission: 2025-12-25 23:31:44

efficient-modulo

Time of First Successful Submission: 2025-12-25 23:52:37

byte-extraction

Time of First Successful Submission: 2025-12-26 00:30:48

bitwise-and

Time of First Successful Submission: 2025-12-26 00:37:53


GCA CTF

22 / 104 167 / 43529


Using the Terminal

Time of First Successful Submission: 2025-11-29 14:13:36

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-29 14:16:27

Using the GUI Desktop

Time of First Successful Submission: 2025-11-29 14:18:31

Pasting into the Desktop

Time of First Successful Submission: 2025-11-30 16:53:24

Restarting Challenges

Time of First Successful Submission: 2025-12-04 15:52:23

Getting Help

Time of First Successful Submission: 2025-12-04 15:55:31

Challenge Programs

Time of First Successful Submission: 2025-12-20 16:39:34

The Flag File

Time of First Successful Submission: 2025-12-20 16:40:41

Using Privileged Mode

Time of First Successful Submission: 2025-12-22 01:44:49

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-22 01:49:45

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-22 01:50:32

Running Commands

Time of First Successful Submission: 2025-12-25 21:20:55

Move through the Linux filesystem.

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

Create and delete files.

Time of First Successful Submission: 2025-12-25 21:26:27

Move, copy, and rename files.

Time of First Successful Submission: 2025-12-25 21:31:26

Display file contents in the terminal.

Time of First Successful Submission: 2025-12-25 21:32:37

Create files with nano.

Time of First Successful Submission: 2025-12-25 21:35:05

Edit files with nano.

Time of First Successful Submission: 2025-12-25 21:36:08

Locate files on the Linux filesystem.

Time of First Successful Submission: 2025-12-25 21:37:35

Find the password! (Searching files)

Time of First Successful Submission: 2025-12-25 21:41:35

Advanced Directory Techniques.

Time of First Successful Submission: 2025-12-25 21:47:36

Learn about command flags.

Time of First Successful Submission: 2025-12-25 23:09:07