Gr3k0x

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-06-07 11:56:27

Command Arguments

Time of First Successful Submission: 2025-06-07 11:57:49

Command History

Time of First Successful Submission: 2025-06-07 11:58:38

The Root Path

Time of First Successful Submission: 2025-06-07 12:14:43

Absolute Paths

Time of First Successful Submission: 2025-06-07 12:15:55

Changing position

Time of First Successful Submission: 2025-06-08 15:01:42

Changing to an Absolute Path

Time of First Successful Submission: 2025-06-08 15:02:38

Relative Paths

Time of First Successful Submission: 2025-06-08 15:05:34

Cat

Time of First Successful Submission: 2025-06-08 17:45:55

Ls

Time of First Successful Submission: 2025-06-08 17:50:53

Ls All

Time of First Successful Submission: 2025-06-08 18:44:14

Find

Time of First Successful Submission: 2025-06-08 18:58:51

Piping Echo

Time of First Successful Submission: 2026-03-02 18:06:07

Piping Stdout

Time of First Successful Submission: 2026-03-02 18:08:50

Piping Stdin

Time of First Successful Submission: 2026-03-17 19:10:45


Start Here

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Using the VSCode Workspace

Time of First Successful Submission: 2025-06-01 16:43:09

Using the GUI Desktop

Time of First Successful Submission: 2025-06-01 16:47:03

Pasting into the Desktop

Time of First Successful Submission: 2025-06-01 16:48:38

Restarting Challenges

Time of First Successful Submission: 2025-06-01 16:52:07

Challenge Programs

Time of First Successful Submission: 2025-06-01 16:58:17

The Flag File

Time of First Successful Submission: 2025-06-01 17:00:52

Using Privileged Mode

Time of First Successful Submission: 2025-06-01 17:05:54

Persistent Home Directories - One

Time of First Successful Submission: 2025-06-01 17:20:24

Persistent Home Directories - Two

Time of First Successful Submission: 2025-06-01 17:21:52


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-06-07 11:56:27

Intro to Arguments

Time of First Successful Submission: 2025-06-07 11:57:49

Command History

Time of First Successful Submission: 2025-06-07 11:58:38

The Root

Time of First Successful Submission: 2025-06-07 12:14:43

Program and absolute paths

Time of First Successful Submission: 2025-06-07 12:15:55

Position thy self

Time of First Successful Submission: 2025-06-08 15:01:42

Position elsewhere

Time of First Successful Submission: 2025-06-08 15:02:38

implicit relative paths, from /

Time of First Successful Submission: 2025-06-08 15:05:34

explicit relative paths, from /

Time of First Successful Submission: 2025-06-08 15:07:22

implicit relative path

Time of First Successful Submission: 2025-06-08 15:09:36

home sweet home

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

cat: not the pet, but the command!

Time of First Successful Submission: 2025-06-08 17:45:55

catting absolute paths

Time of First Successful Submission: 2025-06-08 17:46:51

more catting practice

Time of First Successful Submission: 2025-06-08 17:48:04

grepping for a needle in a haystack

Time of First Successful Submission: 2025-06-08 17:49:29

comparing files

Time of First Successful Submission: 2026-02-27 19:06:39

listing files

Time of First Successful Submission: 2025-06-08 17:50:53

touching files

Time of First Successful Submission: 2025-06-08 18:40:58

removing files

Time of First Successful Submission: 2025-06-08 18:42:02

moving files

Time of First Successful Submission: 2025-06-08 18:43:19

copying files

Time of First Successful Submission: 2026-02-27 19:09:01

hidden files

Time of First Successful Submission: 2025-06-08 18:44:14

An Epic Filesystem Quest

Time of First Successful Submission: 2025-06-08 18:53:16

making directories

Time of First Successful Submission: 2025-06-08 18:54:29

finding files

Time of First Successful Submission: 2025-06-08 18:58:51

linking files

Time of First Successful Submission: 2025-06-08 19:27:10

Learning From Documentation

Time of First Successful Submission: 2025-06-15 15:31:58

Learning Complex Usage

Time of First Successful Submission: 2025-06-15 15:39:00

Reading Manuals

Time of First Successful Submission: 2025-06-15 15:42:22

Searching Manuals

Time of First Successful Submission: 2025-06-15 15:58:46

Searching For Manuals

Time of First Successful Submission: 2025-06-15 16:13:03

Helpful Programs

Time of First Successful Submission: 2025-06-15 16:25:55

Help for Builtins

Time of First Successful Submission: 2025-06-15 16:28:45

Matching with *

Time of First Successful Submission: 2026-03-01 19:47:28

Matching with ?

Time of First Successful Submission: 2026-03-01 19:50:48

Matching with []

Time of First Successful Submission: 2026-03-01 19:53:04

Matching paths with []

Time of First Successful Submission: 2026-03-01 19:56:17

Multiple globs

Time of First Successful Submission: 2026-03-01 19:59:48

Mixing globs

Time of First Successful Submission: 2026-03-02 16:51:59

Exclusionary globbing

Time of First Successful Submission: 2026-03-02 16:57:10

Tab completion

Time of First Successful Submission: 2026-03-02 17:57:43

Multiple options for tab completion

Time of First Successful Submission: 2026-03-02 18:03:27

Tab completion on commands

Time of First Successful Submission: 2026-03-02 18:04:07

Redirecting output

Time of First Successful Submission: 2026-03-02 18:06:07

Redirecting more output

Time of First Successful Submission: 2026-03-02 18:08:50

Appending output

Time of First Successful Submission: 2026-03-17 19:00:31

Redirecting errors

Time of First Successful Submission: 2026-03-17 19:04:30

Redirecting input

Time of First Successful Submission: 2026-03-17 19:10:45

Grepping stored results

Time of First Successful Submission: 2026-03-17 19:19:19

Grepping live output

Time of First Successful Submission: 2026-03-17 19:21:14

Grepping errors

Time of First Successful Submission: 2026-03-17 19:27:42

Filtering with grep -v

Time of First Successful Submission: 2026-03-17 19:29:05

Filtering with sed

Time of First Successful Submission: 2026-03-18 20:08:46

Duplicating piped data with tee

Time of First Successful Submission: 2026-03-18 20:14:43

Process substitution for input

Time of First Successful Submission: 2026-03-19 07:23:12

Writing to multiple programs

Time of First Successful Submission: 2026-03-19 09:21:50

Split-piping stderr and stdout

Time of First Successful Submission: 2026-03-19 09:41:29

Named pipes

Time of First Successful Submission: 2026-03-19 10:13:50

Printing Variables

Time of First Successful Submission: 2026-03-19 10:16:51

Setting Variables

Time of First Successful Submission: 2026-03-19 10:26:58

Multi-word Variables

Time of First Successful Submission: 2026-03-19 10:49:39

Exporting Variables

Time of First Successful Submission: 2026-03-19 10:53:34

Printing Exported Variables

Time of First Successful Submission: 2026-03-19 10:54:29

Storing Command Output

Time of First Successful Submission: 2026-03-19 10:57:14

Reading Input

Time of First Successful Submission: 2026-03-19 11:00:22

Reading Files

Time of First Successful Submission: 2026-03-19 11:05:24

Translating characters

Time of First Successful Submission: 2026-03-19 18:41:18

Deleting characters

Time of First Successful Submission: 2026-03-19 18:43:04

Deleting newlines

Time of First Successful Submission: 2026-03-20 19:41:59

Extracting the first lines with head

Time of First Successful Submission: 2026-03-20 19:43:21

Extracting specific sections of text

Time of First Successful Submission: 2026-03-20 19:45:56

Sorting data

Time of First Successful Submission: 2026-03-20 19:47:40

Listing Processes

Time of First Successful Submission: 2026-03-21 08:20:00

Killing Processes

Time of First Successful Submission: 2026-03-21 08:23:08

Interrupting Processes

Time of First Successful Submission: 2026-03-21 08:24:27

Killing Misbehaving Processes

Time of First Successful Submission: 2026-03-21 08:30:00

Suspending Processes

Time of First Successful Submission: 2026-03-21 10:44:12

Resuming Processes

Time of First Successful Submission: 2026-03-21 10:45:24

Backgrounding Processes

Time of First Successful Submission: 2026-03-21 10:53:59

Foregrounding Processes

Time of First Successful Submission: 2026-03-21 10:55:35

Starting Backgrounded Processes

Time of First Successful Submission: 2026-03-21 10:57:01

Process Exit Codes

Time of First Successful Submission: 2026-03-21 10:59:53

Becoming root with su

Time of First Successful Submission: 2026-03-21 11:12:49

Other users with su

Time of First Successful Submission: 2026-03-21 11:13:57

Cracking passwords

Time of First Successful Submission: 2026-03-21 13:50:31

Using sudo

Time of First Successful Submission: 2026-03-21 13:54:20

Changing File Ownership

Time of First Successful Submission: 2026-03-23 07:42:50

Groups and Files

Time of First Successful Submission: 2026-03-23 08:10:28

Fun With Groups Names

Time of First Successful Submission: 2026-03-23 08:11:58

Changing Permissions

Time of First Successful Submission: 2026-03-23 08:18:05

Executable Files

Time of First Successful Submission: 2026-03-23 08:21:34

Permission Tweaking Practice

Time of First Successful Submission: 2026-03-23 08:35:16

Permissions Setting Practice

Time of First Successful Submission: 2026-03-23 17:30:57

The SUID Bit

Time of First Successful Submission: 2026-03-23 19:35:36

Chaining with Semicolons

Time of First Successful Submission: 2026-03-23 19:37:57

Building on Success

Time of First Successful Submission: 2026-03-23 19:40:39

Handling Failure

Time of First Successful Submission: 2026-03-24 08:34:16

Your First Shell Script

Time of First Successful Submission: 2026-03-24 08:38:33

Redirecting Script Output

Time of First Successful Submission: 2026-03-24 08:47:09

Executable Shell Scripts

Time of First Successful Submission: 2026-03-24 08:49:20

Understanding Shebangs

Time of First Successful Submission: 2026-03-24 09:11:50

Scripting with Arguments

Time of First Successful Submission: 2026-03-24 09:17:21

Scripting with Conditionals

Time of First Successful Submission: 2026-03-24 09:30:43

Scripting with Default Cases

Time of First Successful Submission: 2026-03-24 09:42:28

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-03-24 09:46:44

Reading Shell Scripts

Time of First Successful Submission: 2026-03-24 09:48:53

Launching Screen

Time of First Successful Submission: 2026-03-24 09:50:50

Detaching and Attaching

Time of First Successful Submission: 2026-03-25 18:32:29

Finding Sessions

Time of First Successful Submission: 2026-03-25 18:59:14

Switching Windows

Time of First Successful Submission: 2026-03-25 19:01:46

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-03-25 19:04:30

Switching Windows (tmux)

Time of First Successful Submission: 2026-03-25 19:07:48

The PATH Variable

Time of First Successful Submission: 2026-03-25 19:14:27

Setting PATH

Time of First Successful Submission: 2026-03-29 19:32:11

Finding Commands

Time of First Successful Submission: 2026-03-29 19:34:41

Adding Commands

Time of First Successful Submission: 2026-03-29 19:54:14

Hijacking Commands

Time of First Successful Submission: 2026-03-29 20:02:08

Bashrc Backdoor

Time of First Successful Submission: 2026-03-31 19:03:47

Sniffing Input

Time of First Successful Submission: 2026-03-31 19:27:06

Overshared Directories

Time of First Successful Submission: 2026-03-31 19:37:20

Tricky Linking

Time of First Successful Submission: 2026-04-01 12:28:29

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-01 12:37:21

Snooping on Configurations

Time of First Successful Submission: 2026-04-01 12:41:22

The Fork Bomb

Time of First Successful Submission: 2026-04-01 13:12:09

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-01 13:17:43

rm -rf /

Time of First Successful Submission: 2026-04-01 13:37:29

Life after rm -rf /

Time of First Successful Submission: 2026-04-01 13:45:53

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-01 13:50:19


GCA CTF

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Using the VSCode Workspace

Time of First Successful Submission: 2025-06-01 16:43:09

Using the GUI Desktop

Time of First Successful Submission: 2025-06-01 16:47:03

Pasting into the Desktop

Time of First Successful Submission: 2025-06-01 16:48:38

Restarting Challenges

Time of First Successful Submission: 2025-06-01 16:52:07

Challenge Programs

Time of First Successful Submission: 2025-06-01 16:58:17

The Flag File

Time of First Successful Submission: 2025-06-01 17:00:52

Using Privileged Mode

Time of First Successful Submission: 2025-06-01 17:05:54

Persistent Home Directories - One

Time of First Successful Submission: 2025-06-01 17:20:24

Persistent Home Directories - Two

Time of First Successful Submission: 2025-06-01 17:21:52