0xF34R

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-31 18:07:57

Command Arguments

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Command History

Time of First Successful Submission: 2026-01-31 18:09:16

The Root Path

Time of First Successful Submission: 2026-01-31 18:10:08

Absolute Paths

Time of First Successful Submission: 2026-01-31 18:10:31

Changing position

Time of First Successful Submission: 2026-01-31 18:12:39

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-31 18:13:53

Relative Paths

Time of First Successful Submission: 2026-01-31 18:17:32

Cat

Time of First Successful Submission: 2026-02-01 07:54:08

Ls

Time of First Successful Submission: 2026-02-01 07:59:14

Ls All

Time of First Successful Submission: 2026-02-01 08:04:26

Find

Time of First Successful Submission: 2026-02-01 08:46:56

Piping Echo

Time of First Successful Submission: 2026-02-01 17:13:17

Piping Stdout

Time of First Successful Submission: 2026-02-01 17:14:11

Piping Stdin

Time of First Successful Submission: 2026-02-01 17:23:46


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-31 17:34:54

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-31 17:36:21

Using the GUI Desktop

Time of First Successful Submission: 2026-01-31 17:39:02

Pasting into the Desktop

Time of First Successful Submission: 2026-01-31 17:40:32

Restarting Challenges

Time of First Successful Submission: 2026-01-31 17:48:32

Challenge Programs

Time of First Successful Submission: 2026-01-31 17:52:26

The Flag File

Time of First Successful Submission: 2026-01-31 17:53:34

Using Privileged Mode

Time of First Successful Submission: 2026-01-31 17:58:07

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-31 18:02:37

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-31 18:05:20


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-31 18:07:57

Intro to Arguments

Time of First Successful Submission: 2026-01-31 18:08:42

Command History

Time of First Successful Submission: 2026-01-31 18:09:16

The Root

Time of First Successful Submission: 2026-01-31 18:10:08

Program and absolute paths

Time of First Successful Submission: 2026-01-31 18:10:31

Position thy self

Time of First Successful Submission: 2026-01-31 18:12:39

Position elsewhere

Time of First Successful Submission: 2026-01-31 18:13:53

implicit relative paths, from /

Time of First Successful Submission: 2026-01-31 18:17:32

explicit relative paths, from /

Time of First Successful Submission: 2026-01-31 18:18:10

implicit relative path

Time of First Successful Submission: 2026-01-31 18:18:58

home sweet home

Time of First Successful Submission: 2026-01-31 18:22:37

cat: not the pet, but the command!

Time of First Successful Submission: 2026-02-01 07:54:08

catting absolute paths

Time of First Successful Submission: 2026-02-01 07:55:08

more catting practice

Time of First Successful Submission: 2026-02-01 07:56:29

grepping for a needle in a haystack

Time of First Successful Submission: 2026-02-01 07:57:06

comparing files

Time of First Successful Submission: 2026-02-01 07:57:56

listing files

Time of First Successful Submission: 2026-02-01 07:59:14

touching files

Time of First Successful Submission: 2026-02-01 07:59:53

removing files

Time of First Successful Submission: 2026-02-01 08:00:27

moving files

Time of First Successful Submission: 2026-02-01 08:02:30

copying files

Time of First Successful Submission: 2026-02-01 08:03:56

hidden files

Time of First Successful Submission: 2026-02-01 08:04:26

An Epic Filesystem Quest

Time of First Successful Submission: 2026-02-01 08:41:09

making directories

Time of First Successful Submission: 2026-02-01 08:42:00

finding files

Time of First Successful Submission: 2026-02-01 08:46:56

linking files

Time of First Successful Submission: 2026-02-01 09:14:28

Learning From Documentation

Time of First Successful Submission: 2026-02-01 09:26:42

Learning Complex Usage

Time of First Successful Submission: 2026-02-01 09:27:50

Reading Manuals

Time of First Successful Submission: 2026-02-01 09:30:08

Searching Manuals

Time of First Successful Submission: 2026-02-01 09:34:14

Searching For Manuals

Time of First Successful Submission: 2026-02-01 09:46:47

Helpful Programs

Time of First Successful Submission: 2026-02-01 09:54:07

Help for Builtins

Time of First Successful Submission: 2026-02-01 09:57:02

Matching with *

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Matching with ?

Time of First Successful Submission: 2026-02-01 10:00:50

Matching with []

Time of First Successful Submission: 2026-02-01 16:50:04

Matching paths with []

Time of First Successful Submission: 2026-02-01 16:51:10

Multiple globs

Time of First Successful Submission: 2026-02-01 16:57:39

Mixing globs

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Exclusionary globbing

Time of First Successful Submission: 2026-02-01 17:06:24

Tab completion

Time of First Successful Submission: 2026-02-01 17:07:00

Multiple options for tab completion

Time of First Successful Submission: 2026-02-01 17:09:11

Tab completion on commands

Time of First Successful Submission: 2026-02-01 17:10:06

Redirecting output

Time of First Successful Submission: 2026-02-01 17:13:17

Redirecting more output

Time of First Successful Submission: 2026-02-01 17:14:11

Appending output

Time of First Successful Submission: 2026-02-01 17:16:19

Redirecting errors

Time of First Successful Submission: 2026-02-01 17:17:27

Redirecting input

Time of First Successful Submission: 2026-02-01 17:23:46

Grepping stored results

Time of First Successful Submission: 2026-02-01 17:25:20

Grepping live output

Time of First Successful Submission: 2026-02-01 17:26:23

Grepping errors

Time of First Successful Submission: 2026-02-02 16:28:29

Filtering with grep -v

Time of First Successful Submission: 2026-02-02 16:29:45

Filtering with sed

Time of First Successful Submission: 2026-02-02 16:30:50

Duplicating piped data with tee

Time of First Successful Submission: 2026-02-02 16:39:21

Process substitution for input

Time of First Successful Submission: 2026-02-02 16:44:50

Writing to multiple programs

Time of First Successful Submission: 2026-02-02 16:55:38

Split-piping stderr and stdout

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

Named pipes

Time of First Successful Submission: 2026-02-02 17:11:04

Printing Variables

Time of First Successful Submission: 2026-02-03 17:11:21

Setting Variables

Time of First Successful Submission: 2026-02-03 17:12:26

Multi-word Variables

Time of First Successful Submission: 2026-02-03 17:13:01

Exporting Variables

Time of First Successful Submission: 2026-02-03 17:16:54

Printing Exported Variables

Time of First Successful Submission: 2026-02-03 17:17:28

Storing Command Output

Time of First Successful Submission: 2026-02-03 17:20:35

Reading Input

Time of First Successful Submission: 2026-02-03 17:25:44

Reading Files

Time of First Successful Submission: 2026-02-03 17:26:51

Translating characters

Time of First Successful Submission: 2026-02-06 15:26:12

Deleting characters

Time of First Successful Submission: 2026-02-06 15:36:35

Deleting newlines

Time of First Successful Submission: 2026-02-06 15:38:25

Extracting the first lines with head

Time of First Successful Submission: 2026-02-06 15:40:09

Extracting specific sections of text

Time of First Successful Submission: 2026-02-06 15:46:25

Sorting data

Time of First Successful Submission: 2026-02-06 15:48:34

Listing Processes

Time of First Successful Submission: 2026-02-03 17:31:11

Killing Processes

Time of First Successful Submission: 2026-02-03 17:33:46

Interrupting Processes

Time of First Successful Submission: 2026-02-03 17:35:39

Killing Misbehaving Processes

Time of First Successful Submission: 2026-02-03 17:38:48

Suspending Processes

Time of First Successful Submission: 2026-02-03 17:39:26

Resuming Processes

Time of First Successful Submission: 2026-02-03 17:40:07

Backgrounding Processes

Time of First Successful Submission: 2026-02-03 17:43:22

Foregrounding Processes

Time of First Successful Submission: 2026-02-03 17:46:57

Starting Backgrounded Processes

Time of First Successful Submission: 2026-02-03 17:47:31

Process Exit Codes

Time of First Successful Submission: 2026-02-03 17:50:15

Becoming root with su

Time of First Successful Submission: 2026-02-06 16:04:56

Other users with su

Time of First Successful Submission: 2026-02-06 16:06:16

Cracking passwords

Time of First Successful Submission: 2026-02-06 16:11:29

Using sudo

Time of First Successful Submission: 2026-02-06 16:13:51

Changing File Ownership

Time of First Successful Submission: 2026-02-12 09:06:09

Groups and Files

Time of First Successful Submission: 2026-02-12 09:07:30

Fun With Groups Names

Time of First Successful Submission: 2026-02-12 09:11:25

Changing Permissions

Time of First Successful Submission: 2026-02-12 09:12:48

Executable Files

Time of First Successful Submission: 2026-02-12 09:13:20

Permission Tweaking Practice

Time of First Successful Submission: 2026-02-12 09:19:54

Permissions Setting Practice

Time of First Successful Submission: 2026-02-12 09:34:51

The SUID Bit

Time of First Successful Submission: 2026-02-12 09:41:50

Chaining with Semicolons

Time of First Successful Submission: 2026-02-06 16:15:14

Building on Success

Time of First Successful Submission: 2026-02-08 17:01:16

Handling Failure

Time of First Successful Submission: 2026-02-08 17:04:28

Your First Shell Script

Time of First Successful Submission: 2026-02-08 17:11:28

Redirecting Script Output

Time of First Successful Submission: 2026-02-12 06:33:32

Executable Shell Scripts

Time of First Successful Submission: 2026-02-12 06:34:20

Understanding Shebangs

Time of First Successful Submission: 2026-02-12 06:37:43

Scripting with Arguments

Time of First Successful Submission: 2026-02-12 06:57:46

Scripting with Conditionals

Time of First Successful Submission: 2026-02-12 07:00:28

Scripting with Default Cases

Time of First Successful Submission: 2026-02-12 07:02:41

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-02-12 07:05:38

Reading Shell Scripts

Time of First Successful Submission: 2026-02-12 07:08:43

Launching Screen

Time of First Successful Submission: 2026-02-12 09:42:54

Detaching and Attaching

Time of First Successful Submission: 2026-02-12 09:49:12

Finding Sessions

Time of First Successful Submission: 2026-02-12 09:54:10

Switching Windows

Time of First Successful Submission: 2026-02-12 09:59:49

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-02-12 10:02:17

Switching Windows (tmux)

Time of First Successful Submission: 2026-02-12 10:04:07

The PATH Variable

Time of First Successful Submission: 2026-02-12 10:06:45

Setting PATH

Time of First Successful Submission: 2026-02-12 10:08:52

Finding Commands

Time of First Successful Submission: 2026-02-12 10:12:00

Adding Commands

Time of First Successful Submission: 2026-02-12 10:16:16

Hijacking Commands

Time of First Successful Submission: 2026-02-12 10:24:08

Bashrc Backdoor

Time of First Successful Submission: 2026-02-13 05:07:00

Sniffing Input

Time of First Successful Submission: 2026-02-13 05:53:12

Overshared Directories

Time of First Successful Submission: 2026-02-14 04:07:58

Tricky Linking

Time of First Successful Submission: 2026-02-15 17:05:22

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-16 17:56:25

Snooping on Configurations

Time of First Successful Submission: 2026-02-16 18:00:55

The Fork Bomb

Time of First Successful Submission: 2026-02-16 18:21:47

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-16 18:25:30

rm -rf /

Time of First Successful Submission: 2026-02-16 18:29:07

Life after rm -rf /

Time of First Successful Submission: 2026-02-22 17:24:52

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-22 17:31:52


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-01-31 17:34:54

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-31 17:36:21

Using the GUI Desktop

Time of First Successful Submission: 2026-01-31 17:39:02

Pasting into the Desktop

Time of First Successful Submission: 2026-01-31 17:40:32

Connecting over SSH

Time of First Successful Submission: 2026-01-31 17:44:23

Restarting Challenges

Time of First Successful Submission: 2026-01-31 17:48:32

Getting Help

Time of First Successful Submission: 2026-01-31 17:50:01

Challenge Programs

Time of First Successful Submission: 2026-01-31 17:52:26

The Flag File

Time of First Successful Submission: 2026-01-31 17:53:34

Using Privileged Mode

Time of First Successful Submission: 2026-01-31 17:58:07

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-31 18:02:37

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-31 18:05:20