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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-09-10 16:18:31

Command Arguments

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Command History

Time of First Successful Submission: 2025-09-10 16:35:03

The Root Path

Time of First Successful Submission: 2025-09-10 17:38:22

Absolute Paths

Time of First Successful Submission: 2025-09-10 17:39:57

Changing position

Time of First Successful Submission: 2025-09-10 17:44:41

Changing to an Absolute Path

Time of First Successful Submission: 2025-09-10 17:47:21

Relative Paths

Time of First Successful Submission: 2025-09-10 18:17:22

Cat

Time of First Successful Submission: 2025-09-12 01:40:59

Ls

Time of First Successful Submission: 2025-09-12 01:50:59

Ls All

Time of First Successful Submission: 2025-09-12 01:55:24

Find

Time of First Successful Submission: 2025-09-12 02:09:47

Piping Echo

Time of First Successful Submission: 2025-09-29 21:22:07

Piping Stdout

Time of First Successful Submission: 2025-09-29 21:24:27

Piping Stdin

Time of First Successful Submission: 2025-09-29 21:50:13

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-09-10 03:40:11

Using the VSCode Workspace

Time of First Successful Submission: 2025-09-10 03:42:32

Using the GUI Desktop

Time of First Successful Submission: 2025-09-10 03:44:58

Pasting into the Desktop

Time of First Successful Submission: 2025-09-10 03:47:34

Restarting Challenges

Time of First Successful Submission: 2025-09-10 03:53:56

Challenge Programs

Time of First Successful Submission: 2026-02-14 18:16:11

The Flag File

Time of First Successful Submission: 2026-02-14 18:19:59

Using Privileged Mode

Time of First Successful Submission: 2026-02-14 18:25:23

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-14 18:30:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-14 18:39:00

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-09-10 16:18:31

Intro to Arguments

Time of First Successful Submission: 2025-09-10 16:25:38

Command History

Time of First Successful Submission: 2025-09-10 16:35:03

The Root

Time of First Successful Submission: 2025-09-10 17:38:22

Program and absolute paths

Time of First Successful Submission: 2025-09-10 17:39:57

Position thy self

Time of First Successful Submission: 2025-09-10 17:44:41

Position elsewhere

Time of First Successful Submission: 2025-09-10 17:47:21

implicit relative paths, from /

Time of First Successful Submission: 2025-09-10 18:17:22

explicit relative paths, from /

Time of First Successful Submission: 2025-09-10 19:18:41

implicit relative path

Time of First Successful Submission: 2025-09-10 19:20:23

home sweet home

Time of First Successful Submission: 2025-09-10 19:31:40

cat: not the pet, but the command!

Time of First Successful Submission: 2025-09-12 01:40:59

catting absolute paths

Time of First Successful Submission: 2025-09-12 01:41:38

more catting practice

Time of First Successful Submission: 2025-09-12 01:43:54

grepping for a needle in a haystack

Time of First Successful Submission: 2025-09-12 01:45:32

comparing files

Time of First Successful Submission: 2025-09-12 01:47:51

listing files

Time of First Successful Submission: 2025-09-12 01:50:59

touching files

Time of First Successful Submission: 2025-09-12 01:52:13

removing files

Time of First Successful Submission: 2025-09-12 01:53:07

moving files

Time of First Successful Submission: 2025-09-12 01:54:33

copying files

Time of First Successful Submission: 2026-02-19 23:38:16

hidden files

Time of First Successful Submission: 2025-09-12 01:55:24

An Epic Filesystem Quest

Time of First Successful Submission: 2025-09-12 02:03:07

making directories

Time of First Successful Submission: 2025-09-12 02:04:10

finding files

Time of First Successful Submission: 2025-09-12 02:09:47

linking files

Time of First Successful Submission: 2025-09-12 02:33:22

Learning From Documentation

Time of First Successful Submission: 2025-09-12 02:59:06

Learning Complex Usage

Time of First Successful Submission: 2025-09-19 00:43:34

Reading Manuals

Time of First Successful Submission: 2025-09-19 00:51:06

Searching Manuals

Time of First Successful Submission: 2025-09-19 00:54:56

Searching For Manuals

Time of First Successful Submission: 2025-09-19 01:15:12

Helpful Programs

Time of First Successful Submission: 2025-09-19 01:18:30

Help for Builtins

Time of First Successful Submission: 2025-09-19 01:20:38

Matching with *

Time of First Successful Submission: 2025-09-24 03:09:05

Matching with ?

Time of First Successful Submission: 2025-09-24 03:11:41

Matching with []

Time of First Successful Submission: 2025-09-24 03:21:06

Matching paths with []

Time of First Successful Submission: 2025-09-25 02:53:22

Multiple globs

Time of First Successful Submission: 2025-09-25 02:58:13

Mixing globs

Time of First Successful Submission: 2025-09-25 03:03:52

Exclusionary globbing

Time of First Successful Submission: 2025-09-25 03:13:16

Tab completion

Time of First Successful Submission: 2025-09-25 03:15:12

Multiple options for tab completion

Time of First Successful Submission: 2025-09-25 03:17:55

Tab completion on commands

Time of First Successful Submission: 2025-09-25 03:19:01

Redirecting output

Time of First Successful Submission: 2025-09-29 21:22:07

Redirecting more output

Time of First Successful Submission: 2025-09-29 21:24:27

Appending output

Time of First Successful Submission: 2025-09-29 21:34:47

Redirecting errors

Time of First Successful Submission: 2025-09-29 21:47:38

Redirecting input

Time of First Successful Submission: 2025-09-29 21:50:13

Grepping stored results

Time of First Successful Submission: 2025-09-29 22:10:36

Grepping live output

Time of First Successful Submission: 2025-09-29 22:20:03

Grepping errors

Time of First Successful Submission: 2025-09-29 22:24:49

Filtering with grep -v

Time of First Successful Submission: 2025-09-29 22:28:53

Filtering with sed

Time of First Successful Submission: 2026-02-19 23:47:24

Duplicating piped data with tee

Time of First Successful Submission: 2025-09-29 23:05:35

Process substitution for input

Time of First Successful Submission: 2025-09-29 23:56:52

Writing to multiple programs

Time of First Successful Submission: 2025-10-02 23:15:57

Split-piping stderr and stdout

Time of First Successful Submission: 2025-10-02 23:45:01

Named pipes

Time of First Successful Submission: 2025-10-03 00:08:20

Printing Variables

Time of First Successful Submission: 2025-10-03 02:37:18

Setting Variables

Time of First Successful Submission: 2025-10-03 02:39:38

Multi-word Variables

Time of First Successful Submission: 2025-10-03 02:40:38

Exporting Variables

Time of First Successful Submission: 2025-10-03 04:25:28

Printing Exported Variables

Time of First Successful Submission: 2025-10-03 04:26:24

Storing Command Output

Time of First Successful Submission: 2025-10-03 20:02:52

Reading Input

Time of First Successful Submission: 2025-10-06 16:18:32

Reading Files

Time of First Successful Submission: 2025-10-06 16:45:14

Translating characters

Time of First Successful Submission: 2025-10-06 22:10:22

Deleting characters

Time of First Successful Submission: 2026-01-18 01:23:29

Deleting newlines

Time of First Successful Submission: 2026-01-18 01:27:30

Extracting the first lines with head

Time of First Successful Submission: 2026-01-18 01:32:35

Extracting specific sections of text

Time of First Successful Submission: 2026-01-18 01:56:50

Sorting data

Time of First Successful Submission: 2026-01-18 02:03:13

Listing Processes

Time of First Successful Submission: 2026-01-18 02:38:48

Killing Processes

Time of First Successful Submission: 2026-01-18 02:54:31

Interrupting Processes

Time of First Successful Submission: 2026-01-18 02:56:00

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-18 03:11:54

Suspending Processes

Time of First Successful Submission: 2026-01-18 03:44:06

Resuming Processes

Time of First Successful Submission: 2026-01-18 03:59:26

Backgrounding Processes

Time of First Successful Submission: 2026-01-18 04:10:00

Foregrounding Processes

Time of First Successful Submission: 2026-01-18 04:12:22

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-18 04:13:16

Process Exit Codes

Time of First Successful Submission: 2026-01-18 04:16:20

Becoming root with su

Time of First Successful Submission: 2026-01-19 04:36:29

Other users with su

Time of First Successful Submission: 2026-01-19 04:38:59

Cracking passwords

Time of First Successful Submission: 2026-01-19 04:54:28

Using sudo

Time of First Successful Submission: 2026-01-19 04:57:56

Changing File Ownership

Time of First Successful Submission: 2026-01-22 01:45:39

Groups and Files

Time of First Successful Submission: 2026-01-22 01:51:22

Fun With Groups Names

Time of First Successful Submission: 2026-01-22 02:02:05

Changing Permissions

Time of First Successful Submission: 2026-01-22 02:08:35

Executable Files

Time of First Successful Submission: 2026-01-22 02:17:11

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-22 02:28:09

Permissions Setting Practice

Time of First Successful Submission: 2026-01-22 02:35:43

The SUID Bit

Time of First Successful Submission: 2026-01-22 02:40:15

Chaining with Semicolons

Time of First Successful Submission: 2026-01-22 03:11:13

Building on Success

Time of First Successful Submission: 2026-01-22 03:13:21

Handling Failure

Time of First Successful Submission: 2026-01-22 03:14:38

Your First Shell Script

Time of First Successful Submission: 2026-01-22 03:19:16

Redirecting Script Output

Time of First Successful Submission: 2026-01-22 03:24:56

Executable Shell Scripts

Time of First Successful Submission: 2026-01-22 03:27:28

Understanding Shebangs

Time of First Successful Submission: 2026-01-22 03:33:30

Scripting with Arguments

Time of First Successful Submission: 2026-01-22 03:38:06

Scripting with Conditionals

Time of First Successful Submission: 2026-01-23 22:20:10

Scripting with Default Cases

Time of First Successful Submission: 2026-01-23 22:24:03

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-23 22:27:36

Reading Shell Scripts

Time of First Successful Submission: 2026-01-23 22:47:16

Launching Screen

Time of First Successful Submission: 2026-01-23 22:50:13

Detaching and Attaching

Time of First Successful Submission: 2026-01-23 22:54:06

Finding Sessions

Time of First Successful Submission: 2026-01-23 22:57:19

Switching Windows

Time of First Successful Submission: 2026-01-23 22:59:26

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-23 23:01:50

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-23 23:03:40

The PATH Variable

Time of First Successful Submission: 2026-01-23 23:24:45

Setting PATH

Time of First Successful Submission: 2026-01-23 23:29:37

Finding Commands

Time of First Successful Submission: 2026-01-23 23:31:17

Adding Commands

Time of First Successful Submission: 2026-01-23 23:49:17

Hijacking Commands

Time of First Successful Submission: 2026-01-24 00:11:07

Bashrc Backdoor

Time of First Successful Submission: 2026-01-24 05:10:58

Sniffing Input

Time of First Successful Submission: 2026-01-26 23:15:53

Overshared Directories

Time of First Successful Submission: 2026-01-26 23:38:03

Tricky Linking

Time of First Successful Submission: 2026-01-28 00:54:05

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-28 01:18:07

Snooping on Configurations

Time of First Successful Submission: 2026-02-13 23:28:07

The Fork Bomb

Time of First Successful Submission: 2026-02-14 00:33:11

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-14 01:17:23

rm -rf /

Time of First Successful Submission: 2026-02-14 01:44:32

Life after rm -rf /

Time of First Successful Submission: 2026-02-14 02:10:33

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-14 18:07:13

Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-17 03:19:03

Your First Syscall

Time of First Successful Submission: 2026-02-17 03:38:58

Exit Codes

Time of First Successful Submission: 2026-02-17 03:46:11

Building Executables

Time of First Successful Submission: 2026-02-17 04:00:48

Moving Between Registers

Time of First Successful Submission: 2026-02-17 04:12:37

Loading From Memory

Time of First Successful Submission: 2026-02-19 22:49:14

More Loading Practice

Time of First Successful Submission: 2026-02-19 22:53:05

Dereferencing Pointers

Time of First Successful Submission: 2026-02-19 23:01:35

Dereferencing Yourself

Time of First Successful Submission: 2026-02-19 23:06:42

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-19 23:14:19

Stored Addresses

Time of First Successful Submission: 2026-02-19 23:20:34

Double Dereference

Time of First Successful Submission: 2026-02-19 23:36:27

The Stack

Time of First Successful Submission: 2026-02-20 00:03:04

Stack Offsets

Time of First Successful Submission: 2026-02-21 01:04:45

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-21 01:26:57

Popping From the Stack

Time of First Successful Submission: 2026-02-21 01:40:18

Tracing Syscalls

Time of First Successful Submission: 2026-02-17 18:51:50

Starting GDB

Time of First Successful Submission: 2026-02-17 18:55:17

Starting Programs in GDB

Time of First Successful Submission: 2026-02-17 18:57:15

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-09-10 03:40:11

Using the VSCode Workspace

Time of First Successful Submission: 2025-09-10 03:42:32

Using the GUI Desktop

Time of First Successful Submission: 2025-09-10 03:44:58

Pasting into the Desktop

Time of First Successful Submission: 2025-09-10 03:47:34

Restarting Challenges

Time of First Successful Submission: 2025-09-10 03:53:56

Getting Help

Time of First Successful Submission: 2025-09-10 03:58:25

Challenge Programs

Time of First Successful Submission: 2026-02-14 18:16:11

The Flag File

Time of First Successful Submission: 2026-02-14 18:19:59

Using Privileged Mode

Time of First Successful Submission: 2026-02-14 18:25:23

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-14 18:30:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-14 18:39:00