seanlyon

🐧

Intro to Programming Languages

15 / 234 10771 / 34428


Commands

Time of First Successful Submission: 2026-05-30 01:00:59

Command Arguments

Time of First Successful Submission: 2026-05-30 01:02:20

Command History

Time of First Successful Submission: 2026-05-30 01:03:22

The Root Path

Time of First Successful Submission: 2026-05-30 01:07:27

Absolute Paths

Time of First Successful Submission: 2026-05-30 01:12:03

Changing position

Time of First Successful Submission: 2026-05-30 01:13:38

Changing to an Absolute Path

Time of First Successful Submission: 2026-05-30 01:16:57

Relative Paths

Time of First Successful Submission: 2026-05-30 01:19:58

Cat

Time of First Successful Submission: 2026-05-30 01:32:56

Ls

Time of First Successful Submission: 2026-05-30 01:42:25

Ls All

Time of First Successful Submission: 2026-05-30 01:47:28

Find

Time of First Successful Submission: 2026-05-30 02:02:16

Piping Echo

Time of First Successful Submission: 2026-05-30 04:36:48

Piping Stdout

Time of First Successful Submission: 2026-05-30 04:39:13

Piping Stdin

Time of First Successful Submission: 2026-05-30 04:48:43


Start Here

12 / 12 2724 / 46721


Using the Terminal

Time of First Successful Submission: 2026-05-29 17:50:32

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-29 17:52:17

Using the GUI Desktop

Time of First Successful Submission: 2026-05-29 17:54:09

Pasting into the Desktop

Time of First Successful Submission: 2026-05-29 17:56:00

Restarting Challenges

Time of First Successful Submission: 2026-05-29 18:28:23

Challenge Programs

Time of First Successful Submission: 2026-05-29 18:34:41

The Flag File

Time of First Successful Submission: 2026-05-29 18:42:43

Using Privileged Mode

Time of First Successful Submission: 2026-05-29 18:46:42

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-29 19:05:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-29 19:06:43


Linux Luminarium

128 / 128 3302 / 34890


Intro to Commands

Time of First Successful Submission: 2026-05-30 01:00:59

Intro to Arguments

Time of First Successful Submission: 2026-05-30 01:02:20

Command History

Time of First Successful Submission: 2026-05-30 01:03:22

The Root

Time of First Successful Submission: 2026-05-30 01:07:27

Program and absolute paths

Time of First Successful Submission: 2026-05-30 01:12:03

Position thy self

Time of First Successful Submission: 2026-05-30 01:13:38

Position elsewhere

Time of First Successful Submission: 2026-05-30 01:16:57

implicit relative paths, from /

Time of First Successful Submission: 2026-05-30 01:19:58

explicit relative paths, from /

Time of First Successful Submission: 2026-05-30 01:21:12

implicit relative path

Time of First Successful Submission: 2026-05-30 01:22:01

home sweet home

Time of First Successful Submission: 2026-05-30 01:25:40

cat: not the pet, but the command!

Time of First Successful Submission: 2026-05-30 01:32:56

catting absolute paths

Time of First Successful Submission: 2026-05-30 01:34:38

more catting practice

Time of First Successful Submission: 2026-05-30 01:35:46

grepping for a needle in a haystack

Time of First Successful Submission: 2026-05-30 01:37:19

comparing files

Time of First Successful Submission: 2026-05-30 01:41:30

listing files

Time of First Successful Submission: 2026-05-30 01:42:25

touching files

Time of First Successful Submission: 2026-05-30 01:43:09

removing files

Time of First Successful Submission: 2026-05-30 01:43:57

moving files

Time of First Successful Submission: 2026-05-30 01:45:24

copying files

Time of First Successful Submission: 2026-05-30 01:46:03

hidden files

Time of First Successful Submission: 2026-05-30 01:47:28

An Epic Filesystem Quest

Time of First Successful Submission: 2026-05-30 01:54:23

making directories

Time of First Successful Submission: 2026-05-30 01:55:41

finding files

Time of First Successful Submission: 2026-05-30 02:02:16

linking files

Time of First Successful Submission: 2026-05-30 02:09:57

Learning From Documentation

Time of First Successful Submission: 2026-05-30 02:16:14

Learning Complex Usage

Time of First Successful Submission: 2026-05-30 02:17:30

Reading Manuals

Time of First Successful Submission: 2026-05-30 02:19:55

Searching Manuals

Time of First Successful Submission: 2026-05-30 02:21:07

Searching For Manuals

Time of First Successful Submission: 2026-05-30 02:22:34

Helpful Programs

Time of First Successful Submission: 2026-05-30 02:24:05

Help for Builtins

Time of First Successful Submission: 2026-05-30 02:27:13

Matching with *

Time of First Successful Submission: 2026-05-30 03:08:23

Matching with ?

Time of First Successful Submission: 2026-05-30 03:10:02

Matching with []

Time of First Successful Submission: 2026-05-30 03:11:51

Matching paths with []

Time of First Successful Submission: 2026-05-30 03:13:58

Multiple globs

Time of First Successful Submission: 2026-05-30 03:16:14

Mixing globs

Time of First Successful Submission: 2026-05-30 03:19:18

Exclusionary globbing

Time of First Successful Submission: 2026-05-30 03:20:58

Tab completion

Time of First Successful Submission: 2026-05-30 03:29:17

Multiple options for tab completion

Time of First Successful Submission: 2026-05-30 03:43:23

Tab completion on commands

Time of First Successful Submission: 2026-05-30 03:43:52

Redirecting output

Time of First Successful Submission: 2026-05-30 04:36:48

Redirecting more output

Time of First Successful Submission: 2026-05-30 04:39:13

Appending output

Time of First Successful Submission: 2026-05-30 04:42:05

Redirecting errors

Time of First Successful Submission: 2026-05-30 04:47:03

Redirecting input

Time of First Successful Submission: 2026-05-30 04:48:43

Grepping stored results

Time of First Successful Submission: 2026-05-30 04:52:24

Grepping live output

Time of First Successful Submission: 2026-05-30 04:53:24

Grepping errors

Time of First Successful Submission: 2026-05-30 04:55:19

Filtering with grep -v

Time of First Successful Submission: 2026-05-30 04:56:39

Filtering with sed

Time of First Successful Submission: 2026-05-30 05:00:00

Duplicating piped data with tee

Time of First Successful Submission: 2026-05-30 05:26:23

Process substitution for input

Time of First Successful Submission: 2026-05-30 05:30:33

Writing to multiple programs

Time of First Successful Submission: 2026-05-30 05:36:39

Split-piping stderr and stdout

Time of First Successful Submission: 2026-05-30 05:40:09

Named pipes

Time of First Successful Submission: 2026-05-30 05:49:36

Printing Variables

Time of First Successful Submission: 2026-05-30 06:12:44

Setting Variables

Time of First Successful Submission: 2026-05-30 06:13:33

Multi-word Variables

Time of First Successful Submission: 2026-05-30 06:14:39

Exporting Variables

Time of First Successful Submission: 2026-05-30 06:34:59

Printing Exported Variables

Time of First Successful Submission: 2026-05-30 06:35:43

Storing Command Output

Time of First Successful Submission: 2026-05-30 06:38:22

Reading Input

Time of First Successful Submission: 2026-05-30 06:41:12

Reading Files

Time of First Successful Submission: 2026-05-30 06:46:58

Translating characters

Time of First Successful Submission: 2026-05-30 06:57:44

Deleting characters

Time of First Successful Submission: 2026-05-30 06:58:54

Deleting newlines

Time of First Successful Submission: 2026-05-30 07:02:45

Extracting the first lines with head

Time of First Successful Submission: 2026-05-30 07:04:24

Extracting specific sections of text

Time of First Successful Submission: 2026-05-30 07:11:16

Sorting data

Time of First Successful Submission: 2026-05-30 07:13:23

Listing Processes

Time of First Successful Submission: 2026-05-30 07:18:37

Killing Processes

Time of First Successful Submission: 2026-05-30 07:21:30

Interrupting Processes

Time of First Successful Submission: 2026-05-30 07:22:23

Killing Misbehaving Processes

Time of First Successful Submission: 2026-05-30 07:25:50

Suspending Processes

Time of First Successful Submission: 2026-05-30 07:26:59

Resuming Processes

Time of First Successful Submission: 2026-05-30 07:29:15

Backgrounding Processes

Time of First Successful Submission: 2026-05-30 07:31:57

Foregrounding Processes

Time of First Successful Submission: 2026-05-30 07:34:27

Starting Backgrounded Processes

Time of First Successful Submission: 2026-05-30 07:35:00

Process Exit Codes

Time of First Successful Submission: 2026-05-30 07:36:18

Becoming root with su

Time of First Successful Submission: 2026-05-30 18:38:59

Other users with su

Time of First Successful Submission: 2026-05-30 18:39:57

Cracking passwords

Time of First Successful Submission: 2026-05-30 18:46:36

Using sudo

Time of First Successful Submission: 2026-05-30 18:48:54

Changing File Ownership

Time of First Successful Submission: 2026-05-30 19:05:51

Groups and Files

Time of First Successful Submission: 2026-05-30 19:09:22

Fun With Groups Names

Time of First Successful Submission: 2026-05-30 19:10:24

Changing Permissions

Time of First Successful Submission: 2026-05-30 19:12:07

Executable Files

Time of First Successful Submission: 2026-05-30 19:13:01

Permission Tweaking Practice

Time of First Successful Submission: 2026-05-30 19:22:27

Permissions Setting Practice

Time of First Successful Submission: 2026-05-30 19:32:47

The SUID Bit

Time of First Successful Submission: 2026-05-30 19:34:49

Chaining with Semicolons

Time of First Successful Submission: 2026-05-30 19:43:25

Building on Success

Time of First Successful Submission: 2026-05-30 19:43:58

Handling Failure

Time of First Successful Submission: 2026-05-30 19:44:38

Your First Shell Script

Time of First Successful Submission: 2026-05-30 19:46:40

Redirecting Script Output

Time of First Successful Submission: 2026-05-30 20:22:13

Executable Shell Scripts

Time of First Successful Submission: 2026-05-30 20:45:33

Understanding Shebangs

Time of First Successful Submission: 2026-05-30 20:47:54

Scripting with Arguments

Time of First Successful Submission: 2026-05-30 21:29:41

Scripting with Conditionals

Time of First Successful Submission: 2026-05-30 21:31:45

Scripting with Default Cases

Time of First Successful Submission: 2026-05-30 22:07:24

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-05-30 22:10:00

Reading Shell Scripts

Time of First Successful Submission: 2026-05-30 22:11:46

Launching Screen

Time of First Successful Submission: 2026-05-30 22:12:52

Detaching and Attaching

Time of First Successful Submission: 2026-05-30 22:14:50

Finding Sessions

Time of First Successful Submission: 2026-05-30 22:22:19

Switching Windows

Time of First Successful Submission: 2026-05-30 22:23:39

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-05-30 22:24:54

Switching Windows (tmux)

Time of First Successful Submission: 2026-05-30 22:25:45

The PATH Variable

Time of First Successful Submission: 2026-05-30 22:28:26

Setting PATH

Time of First Successful Submission: 2026-05-30 22:30:43

Finding Commands

Time of First Successful Submission: 2026-05-30 22:32:02

Adding Commands

Time of First Successful Submission: 2026-05-30 22:37:07

Hijacking Commands

Time of First Successful Submission: 2026-05-30 22:40:29

Bashrc Backdoor

Time of First Successful Submission: 2026-05-30 22:47:58

Sniffing Input

Time of First Successful Submission: 2026-05-30 22:52:17

Overshared Directories

Time of First Successful Submission: 2026-05-30 22:56:04

Tricky Linking

Time of First Successful Submission: 2026-05-30 23:07:06

Sniffing Process Arguments

Time of First Successful Submission: 2026-05-30 23:09:55

Snooping on Configurations

Time of First Successful Submission: 2026-05-30 23:12:09

The Fork Bomb

Time of First Successful Submission: 2026-05-31 04:13:43

Disk-Space Doomsday

Time of First Successful Submission: 2026-05-31 04:17:54

rm -rf /

Time of First Successful Submission: 2026-05-31 04:23:15

Life after rm -rf /

Time of First Successful Submission: 2026-05-31 04:27:42

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-05-31 04:30:36


Computing 101

16 / 94 16349 / 22703


Your First Register

Time of First Successful Submission: 2026-05-31 05:42:35

Your First Syscall

Time of First Successful Submission: 2026-05-31 06:01:46

Exit Codes

Time of First Successful Submission: 2026-05-31 06:04:03

Building Executables

Time of First Successful Submission: 2026-05-31 06:12:24

Moving Between Registers

Time of First Successful Submission: 2026-05-31 06:21:23

Loading From Memory

Time of First Successful Submission: 2026-05-31 07:11:18

More Loading Practice

Time of First Successful Submission: 2026-05-31 07:16:34

Dereferencing Pointers

Time of First Successful Submission: 2026-05-31 07:20:54

Dereferencing Yourself

Time of First Successful Submission: 2026-05-31 07:22:42

Dereferencing with Offsets

Time of First Successful Submission: 2026-05-31 07:30:23

Stored Addresses

Time of First Successful Submission: 2026-05-31 07:34:22

Double Dereference

Time of First Successful Submission: 2026-05-31 07:36:24

The Stack

Time of First Successful Submission: 2026-05-31 07:41:04

Stack Offsets

Time of First Successful Submission: 2026-05-31 07:43:23

Program Arguments on the Stack

Time of First Successful Submission: 2026-05-31 07:47:24

Popping From the Stack

Time of First Successful Submission: 2026-05-31 07:49:25


DSU Cyber Camps

12 / 104 3009 / 47016


Using the Terminal

Time of First Successful Submission: 2026-05-29 17:50:32

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-29 17:52:17

Using the GUI Desktop

Time of First Successful Submission: 2026-05-29 17:54:09

Pasting into the Desktop

Time of First Successful Submission: 2026-05-29 17:56:00

Connecting over SSH

Time of First Successful Submission: 2026-05-29 18:26:08

Restarting Challenges

Time of First Successful Submission: 2026-05-29 18:28:23

Getting Help

Time of First Successful Submission: 2026-05-29 18:32:37

Challenge Programs

Time of First Successful Submission: 2026-05-29 18:34:41

The Flag File

Time of First Successful Submission: 2026-05-29 18:42:43

Using Privileged Mode

Time of First Successful Submission: 2026-05-29 18:46:42

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-29 19:05:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-29 19:06:43


GCA CTF

12 / 104 3009 / 47016


Using the Terminal

Time of First Successful Submission: 2026-05-29 17:50:32

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-29 17:52:17

Using the GUI Desktop

Time of First Successful Submission: 2026-05-29 17:54:09

Pasting into the Desktop

Time of First Successful Submission: 2026-05-29 17:56:00

Connecting over SSH

Time of First Successful Submission: 2026-05-29 18:26:08

Restarting Challenges

Time of First Successful Submission: 2026-05-29 18:28:23

Getting Help

Time of First Successful Submission: 2026-05-29 18:32:37

Challenge Programs

Time of First Successful Submission: 2026-05-29 18:34:41

The Flag File

Time of First Successful Submission: 2026-05-29 18:42:43

Using Privileged Mode

Time of First Successful Submission: 2026-05-29 18:46:42

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-29 19:05:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-29 19:06:43