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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-04-08 13:14:08

Command Arguments

Time of First Successful Submission: 2026-04-08 13:16:51

Command History

Time of First Successful Submission: 2026-04-08 13:18:57

The Root Path

Time of First Successful Submission: 2026-04-08 14:20:05

Absolute Paths

Time of First Successful Submission: 2026-04-08 14:22:19

Changing position

Time of First Successful Submission: 2026-04-08 14:30:57

Changing to an Absolute Path

Time of First Successful Submission: 2026-04-08 14:35:28

Relative Paths

Time of First Successful Submission: 2026-04-08 15:19:29

Cat

Time of First Successful Submission: 2026-04-09 11:15:22

Ls

Time of First Successful Submission: 2026-04-09 12:49:31

Ls All

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

Find

Time of First Successful Submission: 2026-04-09 13:30:50

Piping Echo

Time of First Successful Submission: 2026-04-10 14:04:13

Piping Stdout

Time of First Successful Submission: 2026-04-10 14:07:24

Piping Stdin

Time of First Successful Submission: 2026-04-10 14:26:23


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-04-07 14:39:11

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-07 14:46:06

Using the GUI Desktop

Time of First Successful Submission: 2026-04-07 14:50:14

Pasting into the Desktop

Time of First Successful Submission: 2026-04-07 14:52:59

Restarting Challenges

Time of First Successful Submission: 2026-04-07 17:37:11

Challenge Programs

Time of First Successful Submission: 2026-04-07 17:45:10

The Flag File

Time of First Successful Submission: 2026-04-07 17:53:37

Using Privileged Mode

Time of First Successful Submission: 2026-04-07 18:05:52

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-07 18:09:20

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-07 18:10:01


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-04-08 13:14:08

Intro to Arguments

Time of First Successful Submission: 2026-04-08 13:16:51

Command History

Time of First Successful Submission: 2026-04-08 13:18:57

The Root

Time of First Successful Submission: 2026-04-08 14:20:05

Program and absolute paths

Time of First Successful Submission: 2026-04-08 14:22:19

Position thy self

Time of First Successful Submission: 2026-04-08 14:30:57

Position elsewhere

Time of First Successful Submission: 2026-04-08 14:35:28

implicit relative paths, from /

Time of First Successful Submission: 2026-04-08 15:19:29

explicit relative paths, from /

Time of First Successful Submission: 2026-04-08 15:38:14

implicit relative path

Time of First Successful Submission: 2026-04-08 15:43:24

home sweet home

Time of First Successful Submission: 2026-04-08 16:21:06

cat: not the pet, but the command!

Time of First Successful Submission: 2026-04-09 11:15:22

catting absolute paths

Time of First Successful Submission: 2026-04-09 11:16:21

more catting practice

Time of First Successful Submission: 2026-04-09 11:21:25

grepping for a needle in a haystack

Time of First Successful Submission: 2026-04-09 11:23:03

comparing files

Time of First Successful Submission: 2026-04-09 12:40:15

listing files

Time of First Successful Submission: 2026-04-09 12:49:31

touching files

Time of First Successful Submission: 2026-04-09 12:52:17

removing files

Time of First Successful Submission: 2026-04-09 12:55:02

moving files

Time of First Successful Submission: 2026-04-09 13:00:39

copying files

Time of First Successful Submission: 2026-04-09 13:01:53

hidden files

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

An Epic Filesystem Quest

Time of First Successful Submission: 2026-04-09 13:19:25

making directories

Time of First Successful Submission: 2026-04-09 13:22:06

finding files

Time of First Successful Submission: 2026-04-09 13:30:50

linking files

Time of First Successful Submission: 2026-04-09 13:46:26

Learning From Documentation

Time of First Successful Submission: 2026-04-09 15:06:06

Learning Complex Usage

Time of First Successful Submission: 2026-04-09 15:13:11

Reading Manuals

Time of First Successful Submission: 2026-04-09 15:22:39

Searching Manuals

Time of First Successful Submission: 2026-04-09 15:27:29

Searching For Manuals

Time of First Successful Submission: 2026-04-09 15:35:24

Helpful Programs

Time of First Successful Submission: 2026-04-09 15:39:22

Help for Builtins

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Matching with *

Time of First Successful Submission: 2026-04-09 16:03:04

Matching with ?

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Matching with []

Time of First Successful Submission: 2026-04-09 16:09:30

Matching paths with []

Time of First Successful Submission: 2026-04-10 12:35:25

Multiple globs

Time of First Successful Submission: 2026-04-10 12:52:13

Mixing globs

Time of First Successful Submission: 2026-04-10 13:00:51

Exclusionary globbing

Time of First Successful Submission: 2026-04-10 13:12:45

Tab completion

Time of First Successful Submission: 2026-04-10 13:16:34

Multiple options for tab completion

Time of First Successful Submission: 2026-04-10 13:43:42

Tab completion on commands

Time of First Successful Submission: 2026-04-10 13:44:19

Redirecting output

Time of First Successful Submission: 2026-04-10 14:04:13

Redirecting more output

Time of First Successful Submission: 2026-04-10 14:07:24

Appending output

Time of First Successful Submission: 2026-04-10 14:12:59

Redirecting errors

Time of First Successful Submission: 2026-04-10 14:20:08

Redirecting input

Time of First Successful Submission: 2026-04-10 14:26:23

Grepping stored results

Time of First Successful Submission: 2026-04-11 09:02:02

Grepping live output

Time of First Successful Submission: 2026-04-11 09:58:58

Grepping errors

Time of First Successful Submission: 2026-04-11 10:14:18

Filtering with grep -v

Time of First Successful Submission: 2026-04-11 10:19:11

Filtering with sed

Time of First Successful Submission: 2026-04-11 10:24:46

Duplicating piped data with tee

Time of First Successful Submission: 2026-04-11 10:51:41

Process substitution for input

Time of First Successful Submission: 2026-04-11 11:07:49

Writing to multiple programs

Time of First Successful Submission: 2026-04-11 12:10:16

Split-piping stderr and stdout

Time of First Successful Submission: 2026-04-11 12:44:50

Named pipes

Time of First Successful Submission: 2026-04-11 13:51:59

Printing Variables

Time of First Successful Submission: 2026-04-11 14:17:34

Setting Variables

Time of First Successful Submission: 2026-04-11 14:21:10

Multi-word Variables

Time of First Successful Submission: 2026-04-11 14:55:34

Exporting Variables

Time of First Successful Submission: 2026-04-11 15:06:53

Printing Exported Variables

Time of First Successful Submission: 2026-04-11 15:09:05

Storing Command Output

Time of First Successful Submission: 2026-04-11 15:19:55

Reading Input

Time of First Successful Submission: 2026-04-11 15:24:50

Reading Files

Time of First Successful Submission: 2026-04-11 15:34:41

Translating characters

Time of First Successful Submission: 2026-04-13 13:46:21

Deleting characters

Time of First Successful Submission: 2026-04-13 13:52:26

Deleting newlines

Time of First Successful Submission: 2026-04-13 13:55:18

Extracting the first lines with head

Time of First Successful Submission: 2026-04-13 14:06:19

Extracting specific sections of text

Time of First Successful Submission: 2026-04-13 14:16:28

Sorting data

Time of First Successful Submission: 2026-04-13 15:38:31

Listing Processes

Time of First Successful Submission: 2026-04-13 16:13:59

Killing Processes

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Interrupting Processes

Time of First Successful Submission: 2026-04-13 16:39:47

Killing Misbehaving Processes

Time of First Successful Submission: 2026-04-13 16:50:51

Suspending Processes

Time of First Successful Submission: 2026-04-13 16:53:18

Resuming Processes

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Backgrounding Processes

Time of First Successful Submission: 2026-04-13 17:12:02

Foregrounding Processes

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Starting Backgrounded Processes

Time of First Successful Submission: 2026-04-13 17:14:56

Process Exit Codes

Time of First Successful Submission: 2026-04-13 17:21:01

Becoming root with su

Time of First Successful Submission: 2026-04-13 17:33:56

Other users with su

Time of First Successful Submission: 2026-04-13 17:34:54

Cracking passwords

Time of First Successful Submission: 2026-04-13 17:50:35

Using sudo

Time of First Successful Submission: 2026-04-13 17:59:28

Changing File Ownership

Time of First Successful Submission: 2026-04-15 09:42:19

Groups and Files

Time of First Successful Submission: 2026-04-15 09:51:11

Fun With Groups Names

Time of First Successful Submission: 2026-04-15 09:55:09

Changing Permissions

Time of First Successful Submission: 2026-04-15 10:06:58

Executable Files

Time of First Successful Submission: 2026-04-15 10:22:57

Permission Tweaking Practice

Time of First Successful Submission: 2026-04-15 10:29:51

Permissions Setting Practice

Time of First Successful Submission: 2026-04-15 10:42:08

The SUID Bit

Time of First Successful Submission: 2026-04-15 11:03:52

Chaining with Semicolons

Time of First Successful Submission: 2026-04-15 12:11:47

Building on Success

Time of First Successful Submission: 2026-04-15 12:14:19

Handling Failure

Time of First Successful Submission: 2026-04-15 12:16:27

Your First Shell Script

Time of First Successful Submission: 2026-04-15 12:23:38

Redirecting Script Output

Time of First Successful Submission: 2026-04-15 12:47:02

Executable Shell Scripts

Time of First Successful Submission: 2026-04-15 13:12:34

Understanding Shebangs

Time of First Successful Submission: 2026-04-15 13:27:08

Scripting with Arguments

Time of First Successful Submission: 2026-04-15 15:31:13

Scripting with Conditionals

Time of First Successful Submission: 2026-04-15 16:03:59

Scripting with Default Cases

Time of First Successful Submission: 2026-04-15 16:07:48

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-04-15 16:27:07

Reading Shell Scripts

Time of First Successful Submission: 2026-04-15 16:29:34

Launching Screen

Time of First Successful Submission: 2026-04-15 17:19:52

Detaching and Attaching

Time of First Successful Submission: 2026-04-15 17:25:51

Finding Sessions

Time of First Successful Submission: 2026-04-15 17:28:14

Switching Windows

Time of First Successful Submission: 2026-04-15 17:53:33

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-04-15 17:55:16

Switching Windows (tmux)

Time of First Successful Submission: 2026-04-15 18:00:49

The PATH Variable

Time of First Successful Submission: 2026-04-15 18:07:08

Setting PATH

Time of First Successful Submission: 2026-04-15 18:11:29

Finding Commands

Time of First Successful Submission: 2026-04-15 18:25:17

Adding Commands

Time of First Successful Submission: 2026-04-15 18:36:33

Hijacking Commands

Time of First Successful Submission: 2026-04-15 18:47:40

Bashrc Backdoor

Time of First Successful Submission: 2026-04-16 08:06:56

Sniffing Input

Time of First Successful Submission: 2026-04-16 08:24:34

Overshared Directories

Time of First Successful Submission: 2026-04-16 08:44:37

Tricky Linking

Time of First Successful Submission: 2026-04-16 09:23:11

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-16 16:03:34

Snooping on Configurations

Time of First Successful Submission: 2026-04-16 16:08:52

The Fork Bomb

Time of First Successful Submission: 2026-04-17 07:41:54

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-17 07:58:31

rm -rf /

Time of First Successful Submission: 2026-04-17 08:22:31

Life after rm -rf /

Time of First Successful Submission: 2026-04-17 08:30:35

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-17 08:45:16


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-04-07 14:39:11

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-07 14:46:06

Using the GUI Desktop

Time of First Successful Submission: 2026-04-07 14:50:14

Pasting into the Desktop

Time of First Successful Submission: 2026-04-07 14:52:59

Connecting over SSH

Time of First Successful Submission: 2026-04-07 17:28:08

Restarting Challenges

Time of First Successful Submission: 2026-04-07 17:37:11

Challenge Programs

Time of First Successful Submission: 2026-04-07 17:45:10

The Flag File

Time of First Successful Submission: 2026-04-07 17:53:37

Using Privileged Mode

Time of First Successful Submission: 2026-04-07 18:05:52

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-07 18:09:20

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-07 18:10:01