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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-22 07:39:47

Command Arguments

Time of First Successful Submission: 2026-01-22 07:58:43

Command History

Time of First Successful Submission: 2026-01-22 07:59:10

The Root Path

Time of First Successful Submission: 2026-01-22 10:05:42

Absolute Paths

Time of First Successful Submission: 2026-01-22 10:06:14

Changing position

Time of First Successful Submission: 2026-01-22 10:07:10

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-22 10:10:00

Relative Paths

Time of First Successful Submission: 2026-01-22 10:11:28

Cat

Time of First Successful Submission: 2026-01-22 11:12:58

Ls

Time of First Successful Submission: 2026-01-22 11:51:13

Ls All

Time of First Successful Submission: 2026-01-22 11:55:46

Find

Time of First Successful Submission: 2026-01-22 12:16:01

Piping Echo

Time of First Successful Submission: 2026-01-22 13:07:46

Piping Stdout

Time of First Successful Submission: 2026-01-22 13:09:03

Piping Stdin

Time of First Successful Submission: 2026-01-22 13:12:45


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-20 14:23:35

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-21 07:27:42

Using the GUI Desktop

Time of First Successful Submission: 2026-01-21 07:29:08

Pasting into the Desktop

Time of First Successful Submission: 2026-01-21 07:30:21

Restarting Challenges

Time of First Successful Submission: 2026-01-21 07:42:15

Challenge Programs

Time of First Successful Submission: 2026-01-21 07:45:44

The Flag File

Time of First Successful Submission: 2026-01-21 07:46:46

Using Privileged Mode

Time of First Successful Submission: 2026-01-21 07:48:44

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-21 07:50:10

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-21 07:50:55


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-22 07:39:47

Intro to Arguments

Time of First Successful Submission: 2026-01-22 07:58:43

Command History

Time of First Successful Submission: 2026-01-22 07:59:10

The Root

Time of First Successful Submission: 2026-01-22 10:05:42

Program and absolute paths

Time of First Successful Submission: 2026-01-22 10:06:14

Position thy self

Time of First Successful Submission: 2026-01-22 10:07:10

Position elsewhere

Time of First Successful Submission: 2026-01-22 10:10:00

implicit relative paths, from /

Time of First Successful Submission: 2026-01-22 10:11:28

explicit relative paths, from /

Time of First Successful Submission: 2026-01-22 10:14:00

implicit relative path

Time of First Successful Submission: 2026-01-22 10:16:21

home sweet home

Time of First Successful Submission: 2026-01-22 10:21:02

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-22 11:12:58

catting absolute paths

Time of First Successful Submission: 2026-01-22 11:14:27

more catting practice

Time of First Successful Submission: 2026-01-22 11:15:02

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-22 11:48:21

comparing files

Time of First Successful Submission: 2026-01-22 11:50:05

listing files

Time of First Successful Submission: 2026-01-22 11:51:13

touching files

Time of First Successful Submission: 2026-01-22 11:52:31

removing files

Time of First Successful Submission: 2026-01-22 11:53:04

moving files

Time of First Successful Submission: 2026-01-22 11:53:44

copying files

Time of First Successful Submission: 2026-01-22 11:54:17

hidden files

Time of First Successful Submission: 2026-01-22 11:55:46

An Epic Filesystem Quest

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

making directories

Time of First Successful Submission: 2026-01-22 12:02:19

finding files

Time of First Successful Submission: 2026-01-22 12:16:01

linking files

Time of First Successful Submission: 2026-01-22 12:19:24

Learning From Documentation

Time of First Successful Submission: 2026-01-22 12:26:48

Learning Complex Usage

Time of First Successful Submission: 2026-01-22 12:27:55

Reading Manuals

Time of First Successful Submission: 2026-01-22 12:30:14

Searching Manuals

Time of First Successful Submission: 2026-01-22 12:31:55

Searching For Manuals

Time of First Successful Submission: 2026-01-22 12:33:39

Helpful Programs

Time of First Successful Submission: 2026-01-22 12:34:23

Help for Builtins

Time of First Successful Submission: 2026-01-22 12:35:48

Matching with *

Time of First Successful Submission: 2026-01-22 12:45:58

Matching with ?

Time of First Successful Submission: 2026-01-22 12:54:17

Matching with []

Time of First Successful Submission: 2026-01-22 12:56:33

Matching paths with []

Time of First Successful Submission: 2026-01-22 12:57:54

Multiple globs

Time of First Successful Submission: 2026-01-22 12:59:30

Mixing globs

Time of First Successful Submission: 2026-01-22 13:02:38

Exclusionary globbing

Time of First Successful Submission: 2026-01-22 13:03:28

Tab completion

Time of First Successful Submission: 2026-01-22 13:04:17

Multiple options for tab completion

Time of First Successful Submission: 2026-01-22 13:04:58

Tab completion on commands

Time of First Successful Submission: 2026-01-22 13:05:34

Redirecting output

Time of First Successful Submission: 2026-01-22 13:07:46

Redirecting more output

Time of First Successful Submission: 2026-01-22 13:09:03

Appending output

Time of First Successful Submission: 2026-01-22 13:10:21

Redirecting errors

Time of First Successful Submission: 2026-01-22 13:11:55

Redirecting input

Time of First Successful Submission: 2026-01-22 13:12:45

Grepping stored results

Time of First Successful Submission: 2026-01-22 13:13:58

Grepping live output

Time of First Successful Submission: 2026-01-22 13:14:35

Grepping errors

Time of First Successful Submission: 2026-01-22 13:16:09

Filtering with grep -v

Time of First Successful Submission: 2026-01-22 13:42:58

Filtering with sed

Time of First Successful Submission: 2026-01-22 13:44:18

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-22 13:47:51

Process substitution for input

Time of First Successful Submission: 2026-01-22 13:50:07

Writing to multiple programs

Time of First Successful Submission: 2026-01-22 13:54:18

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-22 13:57:12

Named pipes

Time of First Successful Submission: 2026-01-22 14:00:59

Printing Variables

Time of First Successful Submission: 2026-01-23 07:32:11

Setting Variables

Time of First Successful Submission: 2026-01-23 07:32:54

Multi-word Variables

Time of First Successful Submission: 2026-01-23 07:33:36

Exporting Variables

Time of First Successful Submission: 2026-01-23 07:35:35

Printing Exported Variables

Time of First Successful Submission: 2026-01-23 07:36:27

Storing Command Output

Time of First Successful Submission: 2026-01-23 07:37:33

Reading Input

Time of First Successful Submission: 2026-01-23 07:38:33

Reading Files

Time of First Successful Submission: 2026-01-23 07:39:40

Translating characters

Time of First Successful Submission: 2026-01-23 07:43:07

Deleting characters

Time of First Successful Submission: 2026-01-23 07:43:46

Deleting newlines

Time of First Successful Submission: 2026-01-23 07:44:55

Extracting the first lines with head

Time of First Successful Submission: 2026-01-23 07:45:59

Extracting specific sections of text

Time of First Successful Submission: 2026-01-23 07:47:12

Sorting data

Time of First Successful Submission: 2026-01-23 07:48:09

Listing Processes

Time of First Successful Submission: 2026-01-23 08:00:02

Killing Processes

Time of First Successful Submission: 2026-01-23 08:03:27

Interrupting Processes

Time of First Successful Submission: 2026-01-23 08:05:46

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-23 08:09:55

Suspending Processes

Time of First Successful Submission: 2026-01-23 08:10:35

Resuming Processes

Time of First Successful Submission: 2026-01-23 08:11:10

Backgrounding Processes

Time of First Successful Submission: 2026-01-23 08:13:35

Foregrounding Processes

Time of First Successful Submission: 2026-01-23 08:14:49

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-23 08:15:20

Process Exit Codes

Time of First Successful Submission: 2026-01-23 08:17:07

Becoming root with su

Time of First Successful Submission: 2026-01-23 08:22:37

Other users with su

Time of First Successful Submission: 2026-01-23 08:23:42

Cracking passwords

Time of First Successful Submission: 2026-01-23 08:28:34

Using sudo

Time of First Successful Submission: 2026-01-23 08:31:07

Changing File Ownership

Time of First Successful Submission: 2026-01-24 14:40:35

Groups and Files

Time of First Successful Submission: 2026-01-24 14:45:13

Fun With Groups Names

Time of First Successful Submission: 2026-01-24 14:47:22

Changing Permissions

Time of First Successful Submission: 2026-01-24 14:52:10

Executable Files

Time of First Successful Submission: 2026-01-24 14:54:53

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-24 15:02:26

Permissions Setting Practice

Time of First Successful Submission: 2026-01-24 15:07:56

The SUID Bit

Time of First Successful Submission: 2026-01-24 20:47:19

Chaining with Semicolons

Time of First Successful Submission: 2026-01-26 13:28:59

Building on Success

Time of First Successful Submission: 2026-01-26 13:31:21

Handling Failure

Time of First Successful Submission: 2026-01-26 13:32:04

Your First Shell Script

Time of First Successful Submission: 2026-01-26 13:33:54

Redirecting Script Output

Time of First Successful Submission: 2026-01-26 13:34:49

Executable Shell Scripts

Time of First Successful Submission: 2026-01-26 13:35:38

Understanding Shebangs

Time of First Successful Submission: 2026-01-26 13:37:35

Scripting with Arguments

Time of First Successful Submission: 2026-01-26 13:39:50

Scripting with Conditionals

Time of First Successful Submission: 2026-01-26 13:41:48

Scripting with Default Cases

Time of First Successful Submission: 2026-01-26 13:42:37

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-26 13:45:02

Reading Shell Scripts

Time of First Successful Submission: 2026-01-26 13:46:50

Launching Screen

Time of First Successful Submission: 2026-01-26 13:48:27

Detaching and Attaching

Time of First Successful Submission: 2026-01-26 13:50:55

Finding Sessions

Time of First Successful Submission: 2026-01-26 14:20:24

Switching Windows

Time of First Successful Submission: 2026-01-26 14:21:23

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-26 14:22:12

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-26 14:24:13

The PATH Variable

Time of First Successful Submission: 2026-02-16 07:47:27

Setting PATH

Time of First Successful Submission: 2026-02-16 08:07:18

Finding Commands

Time of First Successful Submission: 2026-02-16 08:08:04

Adding Commands

Time of First Successful Submission: 2026-02-16 08:15:41

Hijacking Commands

Time of First Successful Submission: 2026-02-16 08:17:17

Bashrc Backdoor

Time of First Successful Submission: 2026-02-16 08:22:36

Sniffing Input

Time of First Successful Submission: 2026-02-16 08:29:40

Overshared Directories

Time of First Successful Submission: 2026-02-16 08:37:33

Tricky Linking

Time of First Successful Submission: 2026-02-27 12:36:16

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-27 12:37:49

Snooping on Configurations

Time of First Successful Submission: 2026-02-27 12:41:21

The Fork Bomb

Time of First Successful Submission: 2026-02-27 12:48:45

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-27 12:50:50

rm -rf /

Time of First Successful Submission: 2026-02-27 12:52:54

Life after rm -rf /

Time of First Successful Submission: 2026-02-27 12:56:00

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-27 12:58:21


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-01-20 14:23:35

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-21 07:27:42

Using the GUI Desktop

Time of First Successful Submission: 2026-01-21 07:29:08

Pasting into the Desktop

Time of First Successful Submission: 2026-01-21 07:30:21

Connecting over SSH

Time of First Successful Submission: 2026-01-21 07:33:26

Restarting Challenges

Time of First Successful Submission: 2026-01-21 07:42:15

Getting Help

Time of First Successful Submission: 2026-01-21 07:44:40

Challenge Programs

Time of First Successful Submission: 2026-01-21 07:45:44

The Flag File

Time of First Successful Submission: 2026-01-21 07:46:46

Using Privileged Mode

Time of First Successful Submission: 2026-01-21 07:48:44

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-21 07:50:10

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-21 07:50:55