ZIX

🐧

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-04-13 20:47:49

Command Arguments

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Command History

Time of First Successful Submission: 2026-04-13 20:52:46

The Root Path

Time of First Successful Submission: 2026-04-13 21:23:34

Absolute Paths

Time of First Successful Submission: 2026-04-13 22:55:52

Changing position

Time of First Successful Submission: 2026-04-14 17:59:15

Changing to an Absolute Path

Time of First Successful Submission: 2026-04-14 18:03:09

Relative Paths

Time of First Successful Submission: 2026-04-14 18:24:21

Cat

Time of First Successful Submission: 2026-04-14 18:53:44

Ls

Time of First Successful Submission: 2026-04-14 19:04:41

Ls All

Time of First Successful Submission: 2026-04-14 19:15:08

Find

Time of First Successful Submission: 2026-04-14 19:33:36

Piping Echo

Time of First Successful Submission: 2026-04-17 15:13:09

Piping Stdout

Time of First Successful Submission: 2026-04-17 15:26:20

Piping Stdin

Time of First Successful Submission: 2026-04-17 18:14:35


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-04-13 18:00:00

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-13 18:05:14

Using the GUI Desktop

Time of First Successful Submission: 2026-04-13 18:10:22

Pasting into the Desktop

Time of First Successful Submission: 2026-04-13 18:13:58

Restarting Challenges

Time of First Successful Submission: 2026-04-13 20:14:31

Challenge Programs

Time of First Successful Submission: 2026-05-06 14:00:27

The Flag File

Time of First Successful Submission: 2026-05-06 14:04:10

Using Privileged Mode

Time of First Successful Submission: 2026-05-06 14:16:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-06 14:30:09

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-06 14:30:57


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-04-13 20:47:49

Intro to Arguments

Time of First Successful Submission: 2026-04-13 20:51:48

Command History

Time of First Successful Submission: 2026-04-13 20:52:46

The Root

Time of First Successful Submission: 2026-04-13 21:23:34

Program and absolute paths

Time of First Successful Submission: 2026-04-13 22:55:52

Position thy self

Time of First Successful Submission: 2026-04-14 17:59:15

Position elsewhere

Time of First Successful Submission: 2026-04-14 18:03:09

implicit relative paths, from /

Time of First Successful Submission: 2026-04-14 18:24:21

explicit relative paths, from /

Time of First Successful Submission: 2026-04-14 18:25:59

implicit relative path

Time of First Successful Submission: 2026-04-14 18:28:22

home sweet home

Time of First Successful Submission: 2026-04-14 18:48:14

cat: not the pet, but the command!

Time of First Successful Submission: 2026-04-14 18:53:44

catting absolute paths

Time of First Successful Submission: 2026-04-14 18:54:56

more catting practice

Time of First Successful Submission: 2026-04-14 18:56:03

grepping for a needle in a haystack

Time of First Successful Submission: 2026-04-14 18:58:04

comparing files

Time of First Successful Submission: 2026-04-14 19:02:48

listing files

Time of First Successful Submission: 2026-04-14 19:04:41

touching files

Time of First Successful Submission: 2026-04-14 19:06:36

removing files

Time of First Successful Submission: 2026-04-14 19:08:15

moving files

Time of First Successful Submission: 2026-04-14 19:12:04

copying files

Time of First Successful Submission: 2026-04-14 19:13:00

hidden files

Time of First Successful Submission: 2026-04-14 19:15:08

An Epic Filesystem Quest

Time of First Successful Submission: 2026-04-14 19:24:28

making directories

Time of First Successful Submission: 2026-04-14 19:26:45

finding files

Time of First Successful Submission: 2026-04-14 19:33:36

linking files

Time of First Successful Submission: 2026-04-14 20:13:37

Learning From Documentation

Time of First Successful Submission: 2026-04-14 20:25:17

Learning Complex Usage

Time of First Successful Submission: 2026-04-14 20:32:11

Reading Manuals

Time of First Successful Submission: 2026-04-14 20:47:10

Searching Manuals

Time of First Successful Submission: 2026-04-14 21:38:58

Searching For Manuals

Time of First Successful Submission: 2026-04-14 22:08:23

Helpful Programs

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Help for Builtins

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Matching with *

Time of First Successful Submission: 2026-04-15 16:12:58

Matching with ?

Time of First Successful Submission: 2026-04-17 12:27:05

Matching with []

Time of First Successful Submission: 2026-04-17 12:31:52

Matching paths with []

Time of First Successful Submission: 2026-04-17 12:35:47

Multiple globs

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Mixing globs

Time of First Successful Submission: 2026-04-17 14:48:18

Exclusionary globbing

Time of First Successful Submission: 2026-04-17 14:55:36

Tab completion

Time of First Successful Submission: 2026-04-17 14:57:14

Multiple options for tab completion

Time of First Successful Submission: 2026-04-17 15:06:33

Tab completion on commands

Time of First Successful Submission: 2026-04-17 15:07:27

Redirecting output

Time of First Successful Submission: 2026-04-17 15:13:09

Redirecting more output

Time of First Successful Submission: 2026-04-17 15:26:20

Appending output

Time of First Successful Submission: 2026-04-17 15:33:20

Redirecting errors

Time of First Successful Submission: 2026-04-17 15:40:01

Redirecting input

Time of First Successful Submission: 2026-04-17 18:14:35

Grepping stored results

Time of First Successful Submission: 2026-04-17 18:26:30

Grepping live output

Time of First Successful Submission: 2026-04-17 18:41:58

Grepping errors

Time of First Successful Submission: 2026-04-17 20:25:11

Filtering with grep -v

Time of First Successful Submission: 2026-04-19 14:22:42

Filtering with sed

Time of First Successful Submission: 2026-04-19 14:33:07

Duplicating piped data with tee

Time of First Successful Submission: 2026-04-19 15:14:35

Process substitution for input

Time of First Successful Submission: 2026-04-19 15:36:08

Writing to multiple programs

Time of First Successful Submission: 2026-04-19 16:06:01

Split-piping stderr and stdout

Time of First Successful Submission: 2026-04-19 17:43:25

Named pipes

Time of First Successful Submission: 2026-04-19 18:16:02

Printing Variables

Time of First Successful Submission: 2026-04-21 15:16:47

Setting Variables

Time of First Successful Submission: 2026-04-21 15:19:11

Multi-word Variables

Time of First Successful Submission: 2026-04-21 15:24:28

Exporting Variables

Time of First Successful Submission: 2026-04-21 15:54:44

Printing Exported Variables

Time of First Successful Submission: 2026-04-21 16:01:47

Storing Command Output

Time of First Successful Submission: 2026-04-21 16:19:08

Reading Input

Time of First Successful Submission: 2026-04-21 16:38:22

Reading Files

Time of First Successful Submission: 2026-04-21 16:48:07

Translating characters

Time of First Successful Submission: 2026-04-21 17:47:09

Deleting characters

Time of First Successful Submission: 2026-04-21 17:50:21

Deleting newlines

Time of First Successful Submission: 2026-04-21 17:55:48

Extracting the first lines with head

Time of First Successful Submission: 2026-04-21 18:10:16

Extracting specific sections of text

Time of First Successful Submission: 2026-04-21 18:22:12

Sorting data

Time of First Successful Submission: 2026-04-21 18:27:26

Listing Processes

Time of First Successful Submission: 2026-04-21 18:35:19

Killing Processes

Time of First Successful Submission: 2026-04-21 18:45:11

Interrupting Processes

Time of First Successful Submission: 2026-04-21 18:48:48

Killing Misbehaving Processes

Time of First Successful Submission: 2026-04-21 18:54:09

Suspending Processes

Time of First Successful Submission: 2026-04-21 18:55:43

Resuming Processes

Time of First Successful Submission: 2026-04-21 18:56:51

Backgrounding Processes

Time of First Successful Submission: 2026-04-21 19:08:30

Foregrounding Processes

Time of First Successful Submission: 2026-04-21 19:39:18

Starting Backgrounded Processes

Time of First Successful Submission: 2026-04-21 19:41:38

Process Exit Codes

Time of First Successful Submission: 2026-04-21 19:47:27

Becoming root with su

Time of First Successful Submission: 2026-04-22 16:29:35

Other users with su

Time of First Successful Submission: 2026-04-22 16:32:21

Cracking passwords

Time of First Successful Submission: 2026-04-22 16:53:32

Using sudo

Time of First Successful Submission: 2026-04-22 17:16:17

Changing File Ownership

Time of First Successful Submission: 2026-04-22 19:01:24

Groups and Files

Time of First Successful Submission: 2026-04-22 19:12:00

Fun With Groups Names

Time of First Successful Submission: 2026-04-22 19:28:30

Changing Permissions

Time of First Successful Submission: 2026-04-22 19:57:58

Executable Files

Time of First Successful Submission: 2026-04-22 20:13:39

Permission Tweaking Practice

Time of First Successful Submission: 2026-04-22 20:23:38

Permissions Setting Practice

Time of First Successful Submission: 2026-04-22 20:42:15

The SUID Bit

Time of First Successful Submission: 2026-04-22 20:50:43

Chaining with Semicolons

Time of First Successful Submission: 2026-04-23 18:21:37

Building on Success

Time of First Successful Submission: 2026-04-23 18:24:27

Handling Failure

Time of First Successful Submission: 2026-04-23 18:28:33

Your First Shell Script

Time of First Successful Submission: 2026-04-23 18:39:45

Redirecting Script Output

Time of First Successful Submission: 2026-04-23 19:17:29

Executable Shell Scripts

Time of First Successful Submission: 2026-04-23 19:27:15

Understanding Shebangs

Time of First Successful Submission: 2026-04-23 19:40:39

Scripting with Arguments

Time of First Successful Submission: 2026-04-23 19:53:09

Scripting with Conditionals

Time of First Successful Submission: 2026-04-23 20:02:42

Scripting with Default Cases

Time of First Successful Submission: 2026-04-23 20:14:09

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-04-23 20:29:16

Reading Shell Scripts

Time of First Successful Submission: 2026-04-23 20:52:19

Launching Screen

Time of First Successful Submission: 2026-04-24 16:42:56

Detaching and Attaching

Time of First Successful Submission: 2026-04-24 16:53:37

Finding Sessions

Time of First Successful Submission: 2026-04-24 17:03:25

Switching Windows

Time of First Successful Submission: 2026-04-24 17:10:53

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-04-24 17:14:51

Switching Windows (tmux)

Time of First Successful Submission: 2026-04-24 17:24:45

The PATH Variable

Time of First Successful Submission: 2026-04-25 13:24:19

Setting PATH

Time of First Successful Submission: 2026-04-25 13:35:15

Finding Commands

Time of First Successful Submission: 2026-04-25 13:42:50

Adding Commands

Time of First Successful Submission: 2026-04-25 16:50:47

Hijacking Commands

Time of First Successful Submission: 2026-04-25 19:18:19

Bashrc Backdoor

Time of First Successful Submission: 2026-04-27 15:17:21

Sniffing Input

Time of First Successful Submission: 2026-04-27 18:53:20

Overshared Directories

Time of First Successful Submission: 2026-04-27 20:47:56

Tricky Linking

Time of First Successful Submission: 2026-04-28 18:52:21

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-28 19:34:12

Snooping on Configurations

Time of First Successful Submission: 2026-04-28 19:39:59

The Fork Bomb

Time of First Successful Submission: 2026-04-28 21:19:23

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-29 16:27:45

rm -rf /

Time of First Successful Submission: 2026-04-29 16:49:12

Life after rm -rf /

Time of First Successful Submission: 2026-04-29 20:20:03

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-29 19:53:03


Computing 101

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Your First Register

Time of First Successful Submission: 2026-05-07 19:06:25

Your First Syscall

Time of First Successful Submission: 2026-05-07 20:16:10

Exit Codes

Time of First Successful Submission: 2026-05-07 20:23:19

Building Executables

Time of First Successful Submission: 2026-05-07 20:44:00

Moving Between Registers

Time of First Successful Submission: 2026-05-07 21:29:36

Loading From Memory

Time of First Successful Submission: 2026-05-08 12:53:51

More Loading Practice

Time of First Successful Submission: 2026-05-08 13:18:59

Dereferencing Pointers

Time of First Successful Submission: 2026-05-08 13:36:33

Dereferencing Yourself

Time of First Successful Submission: 2026-05-08 14:46:49

Dereferencing with Offsets

Time of First Successful Submission: 2026-05-12 15:43:00

Stored Addresses

Time of First Successful Submission: 2026-05-12 16:19:01

Double Dereference

Time of First Successful Submission: 2026-05-12 16:47:39

The Stack

Time of First Successful Submission: 2026-05-12 20:04:54

Stack Offsets

Time of First Successful Submission: 2026-05-12 20:22:10

Program Arguments on the Stack

Time of First Successful Submission: 2026-05-12 20:41:23

Popping From the Stack

Time of First Successful Submission: 2026-05-12 21:06:42

Disassembling Programs

Time of First Successful Submission: 2026-05-12 22:02:37

Tracing Syscalls

Time of First Successful Submission: 2026-05-13 16:29:02

Starting GDB

Time of First Successful Submission: 2026-05-13 16:49:18

Quitting GDB

Time of First Successful Submission: 2026-05-13 16:58:53

Starting Programs in GDB

Time of First Successful Submission: 2026-05-14 18:59:03

Disassembling in GDB

Time of First Successful Submission: 2026-05-14 19:08:41

Stepping Through Instructions

Time of First Successful Submission: 2026-05-14 19:13:17

Reading Register Values

Time of First Successful Submission: 2026-05-14 19:30:17

Popping Stack Values

Time of First Successful Submission: 2026-05-14 19:33:01

Examining Memory

Time of First Successful Submission: 2026-05-14 19:38:21

Examining Stack Pointers

Time of First Successful Submission: 2026-05-14 19:57:47

Cooperative Debugging

Time of First Successful Submission: 2026-05-14 20:21:21

Running with Arguments

Time of First Successful Submission: 2026-06-05 14:35:49

Writing Output

Time of First Successful Submission: 2026-05-18 15:55:38

Chaining Syscalls

Time of First Successful Submission: 2026-05-18 16:28:19

Writing Strings

Time of First Successful Submission: 2026-05-18 16:46:12

Reading Data

Time of First Successful Submission: 2026-05-18 17:40:10

Opening Files

Time of First Successful Submission: 2026-05-18 18:50:52

Hardcoding the Filename

Time of First Successful Submission: 2026-05-18 20:23:47

Comparing Values

Time of First Successful Submission: 2026-05-20 18:36:32

Comparing Characters

Time of First Successful Submission: 2026-05-26 18:54:03

Conditional Control Flow

Time of First Successful Submission: 2026-05-26 19:41:20

Comparing Strings

Time of First Successful Submission: 2026-05-26 20:26:36

Reverse the Password

Time of First Successful Submission: 2026-05-27 14:49:22

Conditionals Without Conditionals

Time of First Successful Submission: 2026-05-27 17:26:17

Looping

Time of First Successful Submission: 2026-05-27 19:26:27

Writing From a Shared Library

Time of First Successful Submission: 2026-06-05 17:06:44

Reverse the Calculation

Time of First Successful Submission: 2026-05-28 15:02:03

Reverse the Reverse

Time of First Successful Submission: 2026-05-28 15:29:28

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-05-28 16:51:34

Loops on Data

Time of First Successful Submission: 2026-05-28 19:04:42

set-register

Time of First Successful Submission: 2026-05-30 16:17:56

set-multiple-registers

Time of First Successful Submission: 2026-05-30 16:27:18

add-to-register

Time of First Successful Submission: 2026-05-30 16:32:56

linear-equation-registers

Time of First Successful Submission: 2026-05-30 18:12:50

integer-division

Time of First Successful Submission: 2026-06-01 13:22:21

modulo-operation

Time of First Successful Submission: 2026-06-01 14:47:30

set-upper-byte

Time of First Successful Submission: 2026-06-01 15:27:48

efficient-modulo

Time of First Successful Submission: 2026-06-01 19:24:40

byte-extraction

Time of First Successful Submission: 2026-06-02 16:12:23

bitwise-and

Time of First Successful Submission: 2026-06-02 18:48:14

check-even

Time of First Successful Submission: 2026-06-04 19:52:16

memory-read

Time of First Successful Submission: 2026-06-05 14:33:38


DSU Cyber Camps

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Using the Terminal

Time of First Successful Submission: 2026-04-13 18:00:00

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-13 18:05:14

Using the GUI Desktop

Time of First Successful Submission: 2026-04-13 18:10:22

Pasting into the Desktop

Time of First Successful Submission: 2026-04-13 18:13:58

Connecting over SSH

Time of First Successful Submission: 2026-04-13 20:03:55

Restarting Challenges

Time of First Successful Submission: 2026-04-13 20:14:31

Getting Help

Time of First Successful Submission: 2026-04-13 20:20:49

Challenge Programs

Time of First Successful Submission: 2026-05-06 14:00:27

The Flag File

Time of First Successful Submission: 2026-05-06 14:04:10

Using Privileged Mode

Time of First Successful Submission: 2026-05-06 14:16:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-06 14:30:09

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-06 14:30:57


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-04-13 18:00:00

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-13 18:05:14

Using the GUI Desktop

Time of First Successful Submission: 2026-04-13 18:10:22

Pasting into the Desktop

Time of First Successful Submission: 2026-04-13 18:13:58

Connecting over SSH

Time of First Successful Submission: 2026-04-13 20:03:55

Restarting Challenges

Time of First Successful Submission: 2026-04-13 20:14:31

Getting Help

Time of First Successful Submission: 2026-04-13 20:20:49

Challenge Programs

Time of First Successful Submission: 2026-05-06 14:00:27

The Flag File

Time of First Successful Submission: 2026-05-06 14:04:10

Using Privileged Mode

Time of First Successful Submission: 2026-05-06 14:16:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-06 14:30:09

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-06 14:30:57