BrandonSchneider

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United States

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-12 21:23:48

Command Arguments

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Command History

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The Root Path

Time of First Successful Submission: 2026-01-12 21:47:16

Absolute Paths

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Changing position

Time of First Successful Submission: 2026-01-12 21:49:45

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-12 21:52:27

Relative Paths

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

P1.0 Level 5 read

Time of First Successful Submission: 2026-01-16 05:26:28

Cat

Time of First Successful Submission: 2026-01-13 01:33:51

Ls

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Ls All

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P1.0 Level 2 list dir

Time of First Successful Submission: 2026-01-16 05:29:00

Find

Time of First Successful Submission: 2026-01-13 05:19:04

P1.0 Level 3 change dir

Time of First Successful Submission: 2026-01-16 05:30:00

Piping Echo

Time of First Successful Submission: 2026-01-13 19:02:32

Piping Stdout

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Piping Stdin

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Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-12 20:56:57

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-12 21:00:19

Using the GUI Desktop

Time of First Successful Submission: 2026-01-12 21:01:46

Pasting into the Desktop

Time of First Successful Submission: 2026-01-12 21:03:14

Restarting Challenges

Time of First Successful Submission: 2026-01-12 21:05:56

Challenge Programs

Time of First Successful Submission: 2026-01-16 04:50:54

The Flag File

Time of First Successful Submission: 2026-01-16 04:51:40

Using Privileged Mode

Time of First Successful Submission: 2026-01-16 04:56:45

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-16 05:07:27

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-16 05:08:07

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-12 21:23:48

Intro to Arguments

Time of First Successful Submission: 2026-01-12 21:24:59

Command History

Time of First Successful Submission: 2026-01-12 21:25:52

The Root

Time of First Successful Submission: 2026-01-12 21:47:16

Program and absolute paths

Time of First Successful Submission: 2026-01-12 21:48:17

Position thy self

Time of First Successful Submission: 2026-01-12 21:49:45

Position elsewhere

Time of First Successful Submission: 2026-01-12 21:52:27

implicit relative paths, from /

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

explicit relative paths, from /

Time of First Successful Submission: 2026-01-12 22:16:49

implicit relative path

Time of First Successful Submission: 2026-01-12 22:19:32

home sweet home

Time of First Successful Submission: 2026-01-13 01:28:07

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-13 01:33:51

catting absolute paths

Time of First Successful Submission: 2026-01-13 01:34:52

more catting practice

Time of First Successful Submission: 2026-01-13 01:35:58

grepping for a needle in a haystack

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

comparing files

Time of First Successful Submission: 2026-01-13 01:39:36

listing files

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touching files

Time of First Successful Submission: 2026-01-13 01:43:47

removing files

Time of First Successful Submission: 2026-01-13 01:44:41

moving files

Time of First Successful Submission: 2026-01-13 01:45:33

copying files

Time of First Successful Submission: 2026-01-13 01:46:14

hidden files

Time of First Successful Submission: 2026-01-13 01:50:09

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-13 05:04:20

making directories

Time of First Successful Submission: 2026-01-13 05:05:59

finding files

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linking files

Time of First Successful Submission: 2026-01-13 17:46:43

Learning From Documentation

Time of First Successful Submission: 2026-01-13 17:51:41

Learning Complex Usage

Time of First Successful Submission: 2026-01-13 17:54:05

Reading Manuals

Time of First Successful Submission: 2026-01-13 17:58:15

Searching Manuals

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

Searching For Manuals

Time of First Successful Submission: 2026-01-13 18:09:22

Helpful Programs

Time of First Successful Submission: 2026-01-13 18:12:08

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 []

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Multiple globs

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Mixing globs

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Exclusionary globbing

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Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-01-13 18:59:52

Tab completion on commands

Time of First Successful Submission: 2026-01-13 19:00:33

Redirecting output

Time of First Successful Submission: 2026-01-13 19:02:32

Redirecting more output

Time of First Successful Submission: 2026-01-13 19:03:39

Appending output

Time of First Successful Submission: 2026-01-13 19:05:22

Redirecting errors

Time of First Successful Submission: 2026-01-13 19:07:33

Redirecting input

Time of First Successful Submission: 2026-01-13 19:09:12

Grepping stored results

Time of First Successful Submission: 2026-01-13 19:12:33

Grepping live output

Time of First Successful Submission: 2026-01-13 19:14:33

Grepping errors

Time of First Successful Submission: 2026-01-13 19:16:50

Filtering with grep -v

Time of First Successful Submission: 2026-01-13 19:18:14

Filtering with sed

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Duplicating piped data with tee

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Process substitution for input

Time of First Successful Submission: 2026-01-13 19:54:45

Writing to multiple programs

Time of First Successful Submission: 2026-01-13 20:00:46

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-13 20:09:01

Named pipes

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Printing Variables

Time of First Successful Submission: 2026-01-13 23:13:59

Setting Variables

Time of First Successful Submission: 2026-01-13 23:15:20

Multi-word Variables

Time of First Successful Submission: 2026-01-13 23:16:25

Exporting Variables

Time of First Successful Submission: 2026-01-13 23:23:37

Printing Exported Variables

Time of First Successful Submission: 2026-01-13 23:24:44

Storing Command Output

Time of First Successful Submission: 2026-01-13 23:39:35

Reading Input

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Reading Files

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Translating characters

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Deleting characters

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Deleting newlines

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Extracting the first lines with head

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Extracting specific sections of text

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Sorting data

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Listing Processes

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Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

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Suspending Processes

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Resuming Processes

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Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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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: 2026-01-14 02:53:13

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-01-14 23:05:10

Groups and Files

Time of First Successful Submission: 2026-01-14 23:07:35

Fun With Groups Names

Time of First Successful Submission: 2026-01-14 23:09:12

Changing Permissions

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

Executable Files

Time of First Successful Submission: 2026-01-14 23:29:05

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-14 23:38:07

Permissions Setting Practice

Time of First Successful Submission: 2026-01-14 23:45:12

The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

Time of First Successful Submission: 2026-01-14 04:02:36

Your First Shell Script

Time of First Successful Submission: 2026-01-14 04:11:39

Redirecting Script Output

Time of First Successful Submission: 2026-01-14 04:16:40

Executable Shell Scripts

Time of First Successful Submission: 2026-01-15 00:24:55

Understanding Shebangs

Time of First Successful Submission: 2026-01-15 00:29:34

Scripting with Arguments

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Scripting with Conditionals

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Scripting with Default Cases

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Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-15 00:43:18

Reading Shell Scripts

Time of First Successful Submission: 2026-01-15 00:51:24

Launching Screen

Time of First Successful Submission: 2026-01-14 04:20:29

Detaching and Attaching

Time of First Successful Submission: 2026-01-14 04:22:08

Finding Sessions

Time of First Successful Submission: 2026-01-14 04:23:20

Switching Windows

Time of First Successful Submission: 2026-01-14 04:24:44

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-14 04:26:32

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-14 04:28:50

The PATH Variable

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Setting PATH

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Finding Commands

Time of First Successful Submission: 2026-01-14 04:39:46

Adding Commands

Time of First Successful Submission: 2026-01-15 01:20:34

Hijacking Commands

Time of First Successful Submission: 2026-01-15 01:31:15

Bashrc Backdoor

Time of First Successful Submission: 2026-01-15 01:42:23

Sniffing Input

Time of First Successful Submission: 2026-01-15 20:00:40

Overshared Directories

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Tricky Linking

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Sniffing Process Arguments

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Snooping on Configurations

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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 /

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Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-01-15 22:40:35

... and again!

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Newline Troubles

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Reasoning about files

Time of First Successful Submission: 2026-01-18 00:16:57

Specifying Filenames

Time of First Successful Submission: 2026-01-18 00:23:49

Your First HTTP Request

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GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-01-12 20:56:57

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-12 21:00:19

Using the GUI Desktop

Time of First Successful Submission: 2026-01-12 21:01:46

Pasting into the Desktop

Time of First Successful Submission: 2026-01-12 21:03:14

Restarting Challenges

Time of First Successful Submission: 2026-01-12 21:05:56

Getting Help

Time of First Successful Submission: 2026-01-12 21:09:53

Challenge Programs

Time of First Successful Submission: 2026-01-16 04:50:54

The Flag File

Time of First Successful Submission: 2026-01-16 04:51:40

Using Privileged Mode

Time of First Successful Submission: 2026-01-16 04:56:45

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-16 05:07:27

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-16 05:08:07