Sneed

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-05-22 17:18:20

Command Arguments

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Command History

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The Root Path

Time of First Successful Submission: 2026-05-22 17:20:14

Absolute Paths

Time of First Successful Submission: 2026-05-22 17:21:22

Changing position

Time of First Successful Submission: 2026-05-22 20:37:57

Changing to an Absolute Path

Time of First Successful Submission: 2026-05-22 20:39:44

Relative Paths

Time of First Successful Submission: 2026-05-22 20:49:33

Cat

Time of First Successful Submission: 2026-05-22 21:00:53

Ls

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Ls All

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Find

Time of First Successful Submission: 2026-05-22 21:36:31

Piping Echo

Time of First Successful Submission: 2026-05-23 14:31:57

Piping Stdout

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Piping Stdin

Time of First Successful Submission: 2026-05-23 14:54:59


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-05-22 16:33:50

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-22 16:35:25

Using the GUI Desktop

Time of First Successful Submission: 2026-05-22 16:40:44

Pasting into the Desktop

Time of First Successful Submission: 2026-05-22 16:44:21

Restarting Challenges

Time of First Successful Submission: 2026-05-22 16:59:50

Challenge Programs

Time of First Successful Submission: 2026-05-22 17:10:18

The Flag File

Time of First Successful Submission: 2026-05-22 17:12:32

Using Privileged Mode

Time of First Successful Submission: 2026-05-22 17:25:27

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-22 17:14:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-22 17:17:46


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-05-22 17:18:20

Intro to Arguments

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Command History

Time of First Successful Submission: 2026-05-22 20:27:36

The Root

Time of First Successful Submission: 2026-05-22 17:20:14

Program and absolute paths

Time of First Successful Submission: 2026-05-22 17:21:22

Position thy self

Time of First Successful Submission: 2026-05-22 20:37:57

Position elsewhere

Time of First Successful Submission: 2026-05-22 20:39:44

implicit relative paths, from /

Time of First Successful Submission: 2026-05-22 20:49:33

explicit relative paths, from /

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implicit relative path

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home sweet home

Time of First Successful Submission: 2026-05-22 20:59:21

cat: not the pet, but the command!

Time of First Successful Submission: 2026-05-22 21:00:53

catting absolute paths

Time of First Successful Submission: 2026-05-22 21:01:38

more catting practice

Time of First Successful Submission: 2026-05-22 21:02:51

grepping for a needle in a haystack

Time of First Successful Submission: 2026-05-22 21:04:06

comparing files

Time of First Successful Submission: 2026-05-22 21:06:12

listing files

Time of First Successful Submission: 2026-05-22 21:07:07

touching files

Time of First Successful Submission: 2026-05-22 21:08:04

removing files

Time of First Successful Submission: 2026-05-22 21:10:09

moving files

Time of First Successful Submission: 2026-05-22 21:11:33

copying files

Time of First Successful Submission: 2026-05-22 21:12:30

hidden files

Time of First Successful Submission: 2026-05-22 21:21:01

An Epic Filesystem Quest

Time of First Successful Submission: 2026-05-22 21:30:08

making directories

Time of First Successful Submission: 2026-05-22 21:31:41

finding files

Time of First Successful Submission: 2026-05-22 21:36:31

linking files

Time of First Successful Submission: 2026-05-22 21:47:52

Learning From Documentation

Time of First Successful Submission: 2026-05-22 22:59:46

Learning Complex Usage

Time of First Successful Submission: 2026-05-22 23:03:57

Reading Manuals

Time of First Successful Submission: 2026-05-22 23:06:51

Searching Manuals

Time of First Successful Submission: 2026-05-22 23:08:12

Searching For Manuals

Time of First Successful Submission: 2026-05-22 23:13:07

Helpful Programs

Time of First Successful Submission: 2026-05-22 23:15:10

Help for Builtins

Time of First Successful Submission: 2026-05-22 23:18:48

Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

Time of First Successful Submission: 2026-05-23 14:18:32

Multiple globs

Time of First Successful Submission: 2026-05-23 14:20:36

Mixing globs

Time of First Successful Submission: 2026-05-23 14:22:32

Exclusionary globbing

Time of First Successful Submission: 2026-05-23 14:24:33

Tab completion

Time of First Successful Submission: 2026-05-23 14:25:52

Multiple options for tab completion

Time of First Successful Submission: 2026-05-23 14:28:41

Tab completion on commands

Time of First Successful Submission: 2026-05-23 14:29:39

Redirecting output

Time of First Successful Submission: 2026-05-23 14:31:57

Redirecting more output

Time of First Successful Submission: 2026-05-23 14:33:04

Appending output

Time of First Successful Submission: 2026-05-23 14:34:53

Redirecting errors

Time of First Successful Submission: 2026-05-23 14:38:19

Redirecting input

Time of First Successful Submission: 2026-05-23 14:54:59

Grepping stored results

Time of First Successful Submission: 2026-05-23 14:56:55

Grepping live output

Time of First Successful Submission: 2026-05-23 14:57:50

Grepping errors

Time of First Successful Submission: 2026-05-23 14:59:46

Filtering with grep -v

Time of First Successful Submission: 2026-05-23 15:02:10

Filtering with sed

Time of First Successful Submission: 2026-05-23 15:05:59

Process substitution for input

Time of First Successful Submission: 2026-05-23 15:34:05

Writing to multiple programs

Time of First Successful Submission: 2026-05-23 17:24:37

Split-piping stderr and stdout

Time of First Successful Submission: 2026-05-23 17:33:53

Printing Variables

Time of First Successful Submission: 2026-05-23 17:36:04

Setting Variables

Time of First Successful Submission: 2026-05-23 17:37:19

Multi-word Variables

Time of First Successful Submission: 2026-05-23 17:38:13

Exporting Variables

Time of First Successful Submission: 2026-05-23 17:41:01

Printing Exported Variables

Time of First Successful Submission: 2026-05-23 17:41:42

Storing Command Output

Time of First Successful Submission: 2026-05-23 17:43:48

Reading Input

Time of First Successful Submission: 2026-05-23 18:27:52

Reading Files

Time of First Successful Submission: 2026-05-23 18:29:49

Translating characters

Time of First Successful Submission: 2026-05-23 18:36:00

Deleting characters

Time of First Successful Submission: 2026-05-23 18:37:07

Deleting newlines

Time of First Successful Submission: 2026-05-23 18:38:37

Extracting the first lines with head

Time of First Successful Submission: 2026-05-23 18:42:12

Extracting specific sections of text

Time of First Successful Submission: 2026-05-23 18:47:38

Sorting data

Time of First Successful Submission: 2026-05-23 18:49:48

Listing Processes

Time of First Successful Submission: 2026-05-23 20:54:08

Killing Processes

Time of First Successful Submission: 2026-05-23 20:56:27

Interrupting Processes

Time of First Successful Submission: 2026-05-23 20:57:32

Killing Misbehaving Processes

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

Suspending Processes

Time of First Successful Submission: 2026-05-23 21:06:44

Resuming Processes

Time of First Successful Submission: 2026-05-23 21:07:32

Backgrounding Processes

Time of First Successful Submission: 2026-05-23 21:09:34

Foregrounding Processes

Time of First Successful Submission: 2026-05-23 21:10:56

Starting Backgrounded Processes

Time of First Successful Submission: 2026-05-23 21:12:04

Process Exit Codes

Time of First Successful Submission: 2026-05-23 21:14:10

Becoming root with su

Time of First Successful Submission: 2026-05-23 21:30:08

Other users with su

Time of First Successful Submission: 2026-05-23 21:31:08

Cracking passwords

Time of First Successful Submission: 2026-05-23 21:37:00

Using sudo

Time of First Successful Submission: 2026-05-23 21:42:44

Changing File Ownership

Time of First Successful Submission: 2026-05-25 00:14:25

Groups and Files

Time of First Successful Submission: 2026-05-25 00:19:20

Fun With Groups Names

Time of First Successful Submission: 2026-05-25 00:29:56

Changing Permissions

Time of First Successful Submission: 2026-05-25 00:56:31

Executable Files

Time of First Successful Submission: 2026-05-25 00:38:43

Permission Tweaking Practice

Time of First Successful Submission: 2026-05-25 00:42:16

Permissions Setting Practice

Time of First Successful Submission: 2026-05-25 00:53:13

The SUID Bit

Time of First Successful Submission: 2026-05-25 00:55:37

Chaining with Semicolons

Time of First Successful Submission: 2026-05-25 01:02:00

Building on Success

Time of First Successful Submission: 2026-05-25 01:03:44

Handling Failure

Time of First Successful Submission: 2026-05-25 01:04:41

Your First Shell Script

Time of First Successful Submission: 2026-05-25 01:11:26

Executable Shell Scripts

Time of First Successful Submission: 2026-05-25 01:36:21

Understanding Shebangs

Time of First Successful Submission: 2026-05-25 01:41:13

Scripting with Arguments

Time of First Successful Submission: 2026-05-25 12:32:15

Scripting with Conditionals

Time of First Successful Submission: 2026-05-25 12:34:52

Scripting with Default Cases

Time of First Successful Submission: 2026-05-25 12:36:59

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-05-25 12:41:40

Reading Shell Scripts

Time of First Successful Submission: 2026-05-25 12:44:52

Launching Screen

Time of First Successful Submission: 2026-05-25 12:46:15

Detaching and Attaching

Time of First Successful Submission: 2026-05-25 12:48:57

Finding Sessions

Time of First Successful Submission: 2026-05-25 12:51:15

Switching Windows

Time of First Successful Submission: 2026-05-25 13:02:38

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-05-25 13:04:21

Switching Windows (tmux)

Time of First Successful Submission: 2026-05-25 13:08:14

The PATH Variable

Time of First Successful Submission: 2026-05-25 13:19:52

Setting PATH

Time of First Successful Submission: 2026-05-25 13:29:00

Finding Commands

Time of First Successful Submission: 2026-05-25 13:31:47

Adding Commands

Time of First Successful Submission: 2026-05-25 13:50:50

Hijacking Commands

Time of First Successful Submission: 2026-05-25 13:57:02

Bashrc Backdoor

Time of First Successful Submission: 2026-05-25 14:05:19

Sniffing Input

Time of First Successful Submission: 2026-05-25 14:16:19

Overshared Directories

Time of First Successful Submission: 2026-05-25 14:21:31

Tricky Linking

Time of First Successful Submission: 2026-05-25 14:48:11

Sniffing Process Arguments

Time of First Successful Submission: 2026-05-25 14:50:21

Snooping on Configurations

Time of First Successful Submission: 2026-05-25 15:02:50

The Fork Bomb

Time of First Successful Submission: 2026-05-25 15:20:45

Disk-Space Doomsday

Time of First Successful Submission: 2026-05-25 15:24:31

rm -rf /

Time of First Successful Submission: 2026-05-25 15:27:23

Life after rm -rf /

Time of First Successful Submission: 2026-05-25 15:35:55

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-05-25 15:40:26


Computing 101

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Your First Register

Time of First Successful Submission: 2026-05-25 17:32:27

Your First Syscall

Time of First Successful Submission: 2026-05-25 17:34:33

Exit Codes

Time of First Successful Submission: 2026-05-25 17:37:48

Building Executables

Time of First Successful Submission: 2026-05-25 17:44:46

Moving Between Registers

Time of First Successful Submission: 2026-05-25 17:54:54

Loading From Memory

Time of First Successful Submission: 2026-05-25 18:09:45

More Loading Practice

Time of First Successful Submission: 2026-05-25 18:13:05

Dereferencing Pointers

Time of First Successful Submission: 2026-05-25 18:17:11

Dereferencing Yourself

Time of First Successful Submission: 2026-05-25 19:08:31

Dereferencing with Offsets

Time of First Successful Submission: 2026-05-25 19:11:44

Stored Addresses

Time of First Successful Submission: 2026-05-25 19:17:17

Double Dereference

Time of First Successful Submission: 2026-05-25 19:24:08

The Stack

Time of First Successful Submission: 2026-05-25 20:16:20

Stack Offsets

Time of First Successful Submission: 2026-05-25 20:20:36

Program Arguments on the Stack

Time of First Successful Submission: 2026-05-25 20:29:20

Popping From the Stack

Time of First Successful Submission: 2026-05-25 20:35:32

Disassembling Programs

Time of First Successful Submission: 2026-05-26 14:07:13

Tracing Syscalls

Time of First Successful Submission: 2026-05-26 14:18:40

Starting GDB

Time of First Successful Submission: 2026-05-26 14:21:55

Quitting GDB

Time of First Successful Submission: 2026-05-26 14:22:34

Starting Programs in GDB

Time of First Successful Submission: 2026-05-26 14:24:15

Disassembling in GDB

Time of First Successful Submission: 2026-05-26 14:25:22

Stepping Through Instructions

Time of First Successful Submission: 2026-05-26 14:27:22

Reading Register Values

Time of First Successful Submission: 2026-05-26 14:28:24

Popping Stack Values

Time of First Successful Submission: 2026-05-26 14:33:51

Examining Memory

Time of First Successful Submission: 2026-05-26 14:37:37

Examining Stack Pointers

Time of First Successful Submission: 2026-05-26 15:34:48

Cooperative Debugging

Time of First Successful Submission: 2026-05-26 15:43:12

Writing Output

Time of First Successful Submission: 2026-05-27 11:21:21

Chaining Syscalls

Time of First Successful Submission: 2026-05-27 12:54:59

Writing Strings

Time of First Successful Submission: 2026-05-27 12:58:22


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-05-25 17:59:16

... and again!

Time of First Successful Submission: 2026-05-27 13:16:13

Newline Troubles

Time of First Successful Submission: 2026-05-27 13:19:54

Reasoning about files

Time of First Successful Submission: 2026-05-27 13:33:42

Specifying Filenames

Time of First Successful Submission: 2026-05-27 13:37:47

Binary and Hex Encoding

Time of First Successful Submission: 2026-05-27 13:49:06

More Hex

Time of First Successful Submission: 2026-05-27 14:33:00

Decoding Hex

Time of First Successful Submission: 2026-05-27 14:37:10


DSU Cyber Camps

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Using the Terminal

Time of First Successful Submission: 2026-05-22 16:33:50

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-22 16:35:25

Using the GUI Desktop

Time of First Successful Submission: 2026-05-22 16:40:44

Pasting into the Desktop

Time of First Successful Submission: 2026-05-22 16:44:21

Connecting over SSH

Time of First Successful Submission: 2026-05-22 16:56:47

Restarting Challenges

Time of First Successful Submission: 2026-05-22 16:59:50

Challenge Programs

Time of First Successful Submission: 2026-05-22 17:10:18

The Flag File

Time of First Successful Submission: 2026-05-22 17:12:32

Using Privileged Mode

Time of First Successful Submission: 2026-05-22 17:25:27

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-22 17:14:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-22 17:17:46


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-05-22 16:33:50

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-22 16:35:25

Using the GUI Desktop

Time of First Successful Submission: 2026-05-22 16:40:44

Pasting into the Desktop

Time of First Successful Submission: 2026-05-22 16:44:21

Connecting over SSH

Time of First Successful Submission: 2026-05-22 16:56:47

Restarting Challenges

Time of First Successful Submission: 2026-05-22 16:59:50

Challenge Programs

Time of First Successful Submission: 2026-05-22 17:10:18

The Flag File

Time of First Successful Submission: 2026-05-22 17:12:32

Using Privileged Mode

Time of First Successful Submission: 2026-05-22 17:25:27

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-22 17:14:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-22 17:17:46