BlackSprite

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-02-27 22:51:34

Command Arguments

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Command History

Time of First Successful Submission: 2026-02-27 23:03:24

The Root Path

Time of First Successful Submission: 2026-02-27 23:14:24

Absolute Paths

Time of First Successful Submission: 2026-02-27 23:16:46

Changing position

Time of First Successful Submission: 2026-02-27 23:23:21

Changing to an Absolute Path

Time of First Successful Submission: 2026-02-27 23:25:48

Relative Paths

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Cat

Time of First Successful Submission: 2026-02-28 00:07:59

Ls

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Ls All

Time of First Successful Submission: 2026-02-28 18:32:38

Find

Time of First Successful Submission: 2026-02-28 18:55:22

Piping Echo

Time of First Successful Submission: 2026-02-28 21:48:05

Piping Stdout

Time of First Successful Submission: 2026-02-28 22:00:28

Piping Stdin

Time of First Successful Submission: 2026-03-01 08:12:24


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-02-27 22:16:00

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-27 22:21:49

Using the GUI Desktop

Time of First Successful Submission: 2026-02-27 22:24:15

Pasting into the Desktop

Time of First Successful Submission: 2026-02-27 22:30:30

Restarting Challenges

Time of First Successful Submission: 2026-02-27 22:33:53

Challenge Programs

Time of First Successful Submission: 2026-03-01 11:13:38

The Flag File

Time of First Successful Submission: 2026-03-01 22:45:47

Using Privileged Mode

Time of First Successful Submission: 2026-03-01 22:48:01

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-01 22:50:12

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-01 22:51:02


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-02-27 22:51:34

Intro to Arguments

Time of First Successful Submission: 2026-02-27 22:57:44

Command History

Time of First Successful Submission: 2026-02-27 23:03:24

The Root

Time of First Successful Submission: 2026-02-27 23:14:24

Program and absolute paths

Time of First Successful Submission: 2026-02-27 23:16:46

Position thy self

Time of First Successful Submission: 2026-02-27 23:23:21

Position elsewhere

Time of First Successful Submission: 2026-02-27 23:25:48

implicit relative paths, from /

Time of First Successful Submission: 2026-02-27 23:27:16

explicit relative paths, from /

Time of First Successful Submission: 2026-02-27 23:28:53

implicit relative path

Time of First Successful Submission: 2026-02-27 23:31:02

home sweet home

Time of First Successful Submission: 2026-02-28 00:04:20

cat: not the pet, but the command!

Time of First Successful Submission: 2026-02-28 00:07:59

catting absolute paths

Time of First Successful Submission: 2026-02-28 00:08:48

more catting practice

Time of First Successful Submission: 2026-02-28 00:13:30

grepping for a needle in a haystack

Time of First Successful Submission: 2026-02-28 00:20:08

comparing files

Time of First Successful Submission: 2026-02-28 18:06:40

listing files

Time of First Successful Submission: 2026-02-28 18:09:24

touching files

Time of First Successful Submission: 2026-02-28 18:11:24

removing files

Time of First Successful Submission: 2026-02-28 18:13:24

moving files

Time of First Successful Submission: 2026-02-28 18:17:53

copying files

Time of First Successful Submission: 2026-02-28 18:20:04

hidden files

Time of First Successful Submission: 2026-02-28 18:32:38

An Epic Filesystem Quest

Time of First Successful Submission: 2026-02-28 18:44:27

making directories

Time of First Successful Submission: 2026-02-28 18:46:15

finding files

Time of First Successful Submission: 2026-02-28 18:55:22

linking files

Time of First Successful Submission: 2026-02-28 20:15:31

Learning From Documentation

Time of First Successful Submission: 2026-02-28 20:20:11

Learning Complex Usage

Time of First Successful Submission: 2026-02-28 20:26:12

Reading Manuals

Time of First Successful Submission: 2026-02-28 21:10:09

Searching Manuals

Time of First Successful Submission: 2026-02-28 20:32:39

Searching For Manuals

Time of First Successful Submission: 2026-02-28 20:58:03

Helpful Programs

Time of First Successful Submission: 2026-02-28 21:04:44

Help for Builtins

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Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

Time of First Successful Submission: 2026-02-28 21:20:26

Multiple globs

Time of First Successful Submission: 2026-02-28 21:22:54

Mixing globs

Time of First Successful Submission: 2026-02-28 21:28:45

Exclusionary globbing

Time of First Successful Submission: 2026-02-28 21:31:34

Tab completion

Time of First Successful Submission: 2026-02-28 21:33:00

Multiple options for tab completion

Time of First Successful Submission: 2026-02-28 21:38:22

Tab completion on commands

Time of First Successful Submission: 2026-02-28 21:42:07

Redirecting output

Time of First Successful Submission: 2026-02-28 21:48:05

Redirecting more output

Time of First Successful Submission: 2026-02-28 22:00:28

Appending output

Time of First Successful Submission: 2026-03-01 07:55:04

Redirecting errors

Time of First Successful Submission: 2026-03-01 08:09:02

Redirecting input

Time of First Successful Submission: 2026-03-01 08:12:24

Grepping stored results

Time of First Successful Submission: 2026-03-01 08:15:40

Grepping live output

Time of First Successful Submission: 2026-03-01 08:18:58

Grepping errors

Time of First Successful Submission: 2026-03-01 08:25:53

Filtering with grep -v

Time of First Successful Submission: 2026-03-01 08:27:04

Filtering with sed

Time of First Successful Submission: 2026-03-01 08:31:43

Duplicating piped data with tee

Time of First Successful Submission: 2026-03-01 08:43:11

Process substitution for input

Time of First Successful Submission: 2026-03-01 09:11:03

Writing to multiple programs

Time of First Successful Submission: 2026-03-01 10:03:16

Split-piping stderr and stdout

Time of First Successful Submission: 2026-03-01 10:22:40

Named pipes

Time of First Successful Submission: 2026-03-01 10:34:18

Printing Variables

Time of First Successful Submission: 2026-03-01 10:35:46

Setting Variables

Time of First Successful Submission: 2026-03-01 10:37:02

Multi-word Variables

Time of First Successful Submission: 2026-03-01 10:38:01

Exporting Variables

Time of First Successful Submission: 2026-03-01 11:00:01

Printing Exported Variables

Time of First Successful Submission: 2026-03-01 11:00:43

Storing Command Output

Time of First Successful Submission: 2026-03-01 11:02:58

Reading Input

Time of First Successful Submission: 2026-03-01 11:07:51

Reading Files

Time of First Successful Submission: 2026-03-01 11:10:18

Translating characters

Time of First Successful Submission: 2026-03-01 11:18:09

Deleting characters

Time of First Successful Submission: 2026-03-01 11:19:35

Deleting newlines

Time of First Successful Submission: 2026-03-01 11:21:14

Extracting the first lines with head

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Extracting specific sections of text

Time of First Successful Submission: 2026-03-01 21:58:55

Sorting data

Time of First Successful Submission: 2026-03-01 22:00:37

Listing Processes

Time of First Successful Submission: 2026-03-01 22:07:31

Killing Processes

Time of First Successful Submission: 2026-03-01 22:10:21

Interrupting Processes

Time of First Successful Submission: 2026-03-01 22:12:00

Killing Misbehaving Processes

Time of First Successful Submission: 2026-03-01 22:17:41

Suspending Processes

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Resuming Processes

Time of First Successful Submission: 2026-03-01 22:20:31

Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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

Process Exit Codes

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Becoming root with su

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Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-03-01 22:39:47

Using sudo

Time of First Successful Submission: 2026-03-01 22:43:03

Changing File Ownership

Time of First Successful Submission: 2026-03-03 06:41:57

Groups and Files

Time of First Successful Submission: 2026-03-03 06:48:12

Fun With Groups Names

Time of First Successful Submission: 2026-03-03 06:51:08

Changing Permissions

Time of First Successful Submission: 2026-03-03 13:44:32

Executable Files

Time of First Successful Submission: 2026-03-03 13:48:18

Permission Tweaking Practice

Time of First Successful Submission: 2026-03-03 14:05:13

Permissions Setting Practice

Time of First Successful Submission: 2026-03-03 14:14:24

The SUID Bit

Time of First Successful Submission: 2026-03-03 14:19:04

Chaining with Semicolons

Time of First Successful Submission: 2026-03-04 07:09:10

Building on Success

Time of First Successful Submission: 2026-03-04 07:10:43

Handling Failure

Time of First Successful Submission: 2026-03-04 07:11:59

Your First Shell Script

Time of First Successful Submission: 2026-03-04 07:16:59

Redirecting Script Output

Time of First Successful Submission: 2026-03-04 07:21:22

Executable Shell Scripts

Time of First Successful Submission: 2026-03-04 07:28:47

Understanding Shebangs

Time of First Successful Submission: 2026-03-04 07:33:48

Scripting with Arguments

Time of First Successful Submission: 2026-03-04 08:43:06

Scripting with Conditionals

Time of First Successful Submission: 2026-03-04 11:24:34

Scripting with Default Cases

Time of First Successful Submission: 2026-03-04 11:29:24

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-03-04 11:39:43

Reading Shell Scripts

Time of First Successful Submission: 2026-03-04 11:45:17

Launching Screen

Time of First Successful Submission: 2026-03-04 11:47:37

Detaching and Attaching

Time of First Successful Submission: 2026-03-04 11:57:52

Finding Sessions

Time of First Successful Submission: 2026-03-04 12:01:10

Switching Windows

Time of First Successful Submission: 2026-03-04 12:05:33

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-03-04 12:07:08

Switching Windows (tmux)

Time of First Successful Submission: 2026-03-04 12:08:31

The PATH Variable

Time of First Successful Submission: 2026-03-04 12:10:44

Setting PATH

Time of First Successful Submission: 2026-03-04 12:14:03

Finding Commands

Time of First Successful Submission: 2026-03-04 12:16:50

Adding Commands

Time of First Successful Submission: 2026-03-04 15:16:10

Hijacking Commands

Time of First Successful Submission: 2026-03-04 18:11:19

Bashrc Backdoor

Time of First Successful Submission: 2026-03-04 18:15:33

Sniffing Input

Time of First Successful Submission: 2026-03-05 07:38:53

Overshared Directories

Time of First Successful Submission: 2026-03-05 08:19:30

Tricky Linking

Time of First Successful Submission: 2026-03-05 09:05:13

Sniffing Process Arguments

Time of First Successful Submission: 2026-03-05 09:18:46

Snooping on Configurations

Time of First Successful Submission: 2026-03-05 09:23:11

The Fork Bomb

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Disk-Space Doomsday

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rm -rf /

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Life after rm -rf /

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Finding meaning after rm -rf /

Time of First Successful Submission: 2026-03-05 10:25:46


Computing 101

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Your First Register

Time of First Successful Submission: 2026-03-05 12:45:31

Your First Syscall

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Exit Codes

Time of First Successful Submission: 2026-03-05 12:53:02

Building Executables

Time of First Successful Submission: 2026-03-05 14:13:43

Moving Between Registers

Time of First Successful Submission: 2026-03-05 14:18:05


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-02-27 22:16:00

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-27 22:21:49

Using the GUI Desktop

Time of First Successful Submission: 2026-02-27 22:24:15

Pasting into the Desktop

Time of First Successful Submission: 2026-02-27 22:30:30

Restarting Challenges

Time of First Successful Submission: 2026-02-27 22:33:53

Getting Help

Time of First Successful Submission: 2026-02-27 22:38:23

Challenge Programs

Time of First Successful Submission: 2026-03-01 11:13:38

The Flag File

Time of First Successful Submission: 2026-03-01 22:45:47

Using Privileged Mode

Time of First Successful Submission: 2026-03-01 22:48:01

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-01 22:50:12

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-01 22:51:02