Vokul

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-05-09 23:18:51

Command Arguments

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Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

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Cat

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Ls

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Ls All

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Find

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Piping Echo

Time of First Successful Submission: 2026-05-10 14:04:05

Piping Stdout

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Piping Stdin

Time of First Successful Submission: 2026-05-10 14:18:35


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-05-09 22:46:10

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-09 22:47:52

Using the GUI Desktop

Time of First Successful Submission: 2026-05-09 22:49:07

Pasting into the Desktop

Time of First Successful Submission: 2026-05-09 22:50:35

Restarting Challenges

Time of First Successful Submission: 2026-05-09 23:04:54

Challenge Programs

Time of First Successful Submission: 2026-05-09 22:45:23

The Flag File

Time of First Successful Submission: 2026-05-09 23:07:48

Using Privileged Mode

Time of First Successful Submission: 2026-05-09 23:11:34

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-09 23:15:36

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-09 23:16:38


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-05-09 23:18:51

Intro to Arguments

Time of First Successful Submission: 2026-05-09 23:19:41

Command History

Time of First Successful Submission: 2026-05-09 23:20:17

The Root

Time of First Successful Submission: 2026-05-09 23:21:38

Program and absolute paths

Time of First Successful Submission: 2026-05-09 23:24:07

Position thy self

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Position elsewhere

Time of First Successful Submission: 2026-05-09 23:30:53

implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

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home sweet home

Time of First Successful Submission: 2026-05-10 00:41:34

cat: not the pet, but the command!

Time of First Successful Submission: 2026-05-10 00:43:23

catting absolute paths

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more catting practice

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grepping for a needle in a haystack

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comparing files

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listing files

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touching files

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removing files

Time of First Successful Submission: 2026-05-10 00:51:17

moving files

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copying files

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hidden files

Time of First Successful Submission: 2026-05-10 00:53:31

An Epic Filesystem Quest

Time of First Successful Submission: 2026-05-10 00:59:08

making directories

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finding files

Time of First Successful Submission: 2026-05-10 01:03:50

linking files

Time of First Successful Submission: 2026-05-10 01:43:04

Learning From Documentation

Time of First Successful Submission: 2026-05-10 01:52:27

Learning Complex Usage

Time of First Successful Submission: 2026-05-10 02:14:11

Reading Manuals

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Searching Manuals

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Searching For Manuals

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Helpful Programs

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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

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Tab completion on commands

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Redirecting output

Time of First Successful Submission: 2026-05-10 14:04:05

Redirecting more output

Time of First Successful Submission: 2026-05-10 14:06:23

Appending output

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

Redirecting errors

Time of First Successful Submission: 2026-05-10 14:14:21

Redirecting input

Time of First Successful Submission: 2026-05-10 14:18:35

Grepping stored results

Time of First Successful Submission: 2026-05-10 14:20:07

Grepping live output

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Grepping errors

Time of First Successful Submission: 2026-05-10 14:28:55

Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

Time of First Successful Submission: 2026-05-10 15:10:19

Process substitution for input

Time of First Successful Submission: 2026-05-10 15:30:17

Writing to multiple programs

Time of First Successful Submission: 2026-05-10 15:50:29

Split-piping stderr and stdout

Time of First Successful Submission: 2026-05-10 16:28:41

Named pipes

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Printing Variables

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Setting Variables

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Multi-word Variables

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Exporting Variables

Time of First Successful Submission: 2026-05-10 16:53:54

Printing Exported Variables

Time of First Successful Submission: 2026-05-10 16:55:08

Storing Command Output

Time of First Successful Submission: 2026-05-10 16:58:19

Reading Input

Time of First Successful Submission: 2026-05-10 17:04:12

Reading Files

Time of First Successful Submission: 2026-05-10 17:10:07

Translating characters

Time of First Successful Submission: 2026-05-11 01:26:48

Deleting characters

Time of First Successful Submission: 2026-05-11 01:27:47

Deleting newlines

Time of First Successful Submission: 2026-05-11 01:29:42

Extracting the first lines with head

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Extracting specific sections of text

Time of First Successful Submission: 2026-05-11 01:40:36

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: 2026-05-11 02:16:26

Using sudo

Time of First Successful Submission: 2026-05-11 02:22:40

Changing File Ownership

Time of First Successful Submission: 2026-05-11 02:26:36

Groups and Files

Time of First Successful Submission: 2026-05-11 02:29:08

Fun With Groups Names

Time of First Successful Submission: 2026-05-11 02:30:55

Changing Permissions

Time of First Successful Submission: 2026-05-11 02:32:46

Executable Files

Time of First Successful Submission: 2026-05-11 02:34:54

Permission Tweaking Practice

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Permissions Setting Practice

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The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

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Your First Shell Script

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Redirecting Script Output

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Executable Shell Scripts

Time of First Successful Submission: 2026-05-11 03:18:46

Understanding Shebangs

Time of First Successful Submission: 2026-05-11 03:21:54

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: 2026-05-11 03:38:48

Reading Shell Scripts

Time of First Successful Submission: 2026-05-11 03:46:04

Launching Screen

Time of First Successful Submission: 2026-05-11 03:53:07

Detaching and Attaching

Time of First Successful Submission: 2026-05-11 03:57:23

Finding Sessions

Time of First Successful Submission: 2026-05-11 04:01:40

Switching Windows

Time of First Successful Submission: 2026-05-11 04:03:50

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-05-11 04:05:37

Switching Windows (tmux)

Time of First Successful Submission: 2026-05-11 04:07:56

The PATH Variable

Time of First Successful Submission: 2026-05-11 04:09:42

Setting PATH

Time of First Successful Submission: 2026-05-11 04:11:44

Finding Commands

Time of First Successful Submission: 2026-05-11 04:13:24

Adding Commands

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Hijacking Commands

Time of First Successful Submission: 2026-05-11 04:30:59

Bashrc Backdoor

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Sniffing Input

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Overshared Directories

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Tricky Linking

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Sniffing Process Arguments

Time of First Successful Submission: 2026-05-12 05:04:25

Snooping on Configurations

Time of First Successful Submission: 2026-05-12 05:09:12

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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Computing 101

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Your First Register

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Your First Syscall

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Exit Codes

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Building Executables

Time of First Successful Submission: 2026-05-13 18:28:57

Moving Between Registers

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Loading From Memory

Time of First Successful Submission: 2026-05-13 19:13:39

More Loading Practice

Time of First Successful Submission: 2026-05-13 19:16:16

Dereferencing Pointers

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Dereferencing Yourself

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Dereferencing with Offsets

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Stored Addresses

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Double Dereference

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The Stack

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Stack Offsets

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Program Arguments on the Stack

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Popping From the Stack

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DSU Cyber Camps

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Using the Terminal

Time of First Successful Submission: 2026-05-09 22:46:10

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-09 22:47:52

Using the GUI Desktop

Time of First Successful Submission: 2026-05-09 22:49:07

Pasting into the Desktop

Time of First Successful Submission: 2026-05-09 22:50:35

Connecting over SSH

Time of First Successful Submission: 2026-05-09 23:00:53

Restarting Challenges

Time of First Successful Submission: 2026-05-09 23:04:54

Challenge Programs

Time of First Successful Submission: 2026-05-09 22:45:23

The Flag File

Time of First Successful Submission: 2026-05-09 23:07:48

Using Privileged Mode

Time of First Successful Submission: 2026-05-09 23:11:34

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-09 23:15:36

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-09 23:16:38


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-05-09 22:46:10

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-09 22:47:52

Using the GUI Desktop

Time of First Successful Submission: 2026-05-09 22:49:07

Pasting into the Desktop

Time of First Successful Submission: 2026-05-09 22:50:35

Connecting over SSH

Time of First Successful Submission: 2026-05-09 23:00:53

Restarting Challenges

Time of First Successful Submission: 2026-05-09 23:04:54

Challenge Programs

Time of First Successful Submission: 2026-05-09 22:45:23

The Flag File

Time of First Successful Submission: 2026-05-09 23:07:48

Using Privileged Mode

Time of First Successful Submission: 2026-05-09 23:11:34

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-09 23:15:36

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-09 23:16:38