UltraZhou

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-05-21 11:01:55

Command Arguments

Time of First Successful Submission: 2026-05-21 11:26:25

Command History

Time of First Successful Submission: 2026-05-21 11:27:18

The Root Path

Time of First Successful Submission: 2026-05-21 13:13:07

Absolute Paths

Time of First Successful Submission: 2026-05-21 13:18:49

Changing position

Time of First Successful Submission: 2026-05-21 13:22:25

Changing to an Absolute Path

Time of First Successful Submission: 2026-05-21 13:27:16

Relative Paths

Time of First Successful Submission: 2026-05-21 13:33:57

Cat

Time of First Successful Submission: 2026-05-22 07:21:31

Ls

Time of First Successful Submission: 2026-05-22 07:38:15

Ls All

Time of First Successful Submission: 2026-05-22 07:48:51

Find

Time of First Successful Submission: 2026-05-22 08:17:05

Piping Echo

Time of First Successful Submission: 2026-05-22 11:39:34

Piping Stdout

Time of First Successful Submission: 2026-05-22 11:44:30

Piping Stdin

Time of First Successful Submission: 2026-05-23 00:46:26


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-05-21 08:20:46

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-21 08:25:16

Using the GUI Desktop

Time of First Successful Submission: 2026-05-21 08:28:23

Pasting into the Desktop

Time of First Successful Submission: 2026-05-21 08:31:25

Restarting Challenges

Time of First Successful Submission: 2026-05-21 08:39:48

Challenge Programs

Time of First Successful Submission: 2026-05-22 11:02:26

The Flag File

Time of First Successful Submission: 2026-05-22 11:03:58

Using Privileged Mode

Time of First Successful Submission: 2026-05-25 14:20:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-25 14:24:06

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-25 14:25:27


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-05-21 11:01:55

Intro to Arguments

Time of First Successful Submission: 2026-05-21 11:26:25

Command History

Time of First Successful Submission: 2026-05-21 11:27:18

The Root

Time of First Successful Submission: 2026-05-21 13:13:07

Program and absolute paths

Time of First Successful Submission: 2026-05-21 13:18:49

Position thy self

Time of First Successful Submission: 2026-05-21 13:22:25

Position elsewhere

Time of First Successful Submission: 2026-05-21 13:27:16

implicit relative paths, from /

Time of First Successful Submission: 2026-05-21 13:33:57

explicit relative paths, from /

Time of First Successful Submission: 2026-05-21 13:35:59

implicit relative path

Time of First Successful Submission: 2026-05-21 13:39:15

home sweet home

Time of First Successful Submission: 2026-05-21 13:47:06

cat: not the pet, but the command!

Time of First Successful Submission: 2026-05-22 07:21:31

catting absolute paths

Time of First Successful Submission: 2026-05-22 07:24:04

more catting practice

Time of First Successful Submission: 2026-05-22 07:26:20

grepping for a needle in a haystack

Time of First Successful Submission: 2026-05-22 07:28:39

comparing files

Time of First Successful Submission: 2026-05-22 07:30:56

listing files

Time of First Successful Submission: 2026-05-22 07:38:15

touching files

Time of First Successful Submission: 2026-05-22 07:40:33

removing files

Time of First Successful Submission: 2026-05-22 07:41:41

moving files

Time of First Successful Submission: 2026-05-22 07:45:09

copying files

Time of First Successful Submission: 2026-05-22 07:47:58

hidden files

Time of First Successful Submission: 2026-05-22 07:48:51

An Epic Filesystem Quest

Time of First Successful Submission: 2026-05-22 08:06:03

making directories

Time of First Successful Submission: 2026-05-22 08:09:01

finding files

Time of First Successful Submission: 2026-05-22 08:17:05

linking files

Time of First Successful Submission: 2026-05-22 08:36:13

Learning From Documentation

Time of First Successful Submission: 2026-05-22 08:39:56

Learning Complex Usage

Time of First Successful Submission: 2026-05-22 08:52:10

Reading Manuals

Time of First Successful Submission: 2026-05-22 08:56:17

Searching Manuals

Time of First Successful Submission: 2026-05-22 09:00:15

Searching For Manuals

Time of First Successful Submission: 2026-05-22 09:10:58

Helpful Programs

Time of First Successful Submission: 2026-05-22 09:14:11

Help for Builtins

Time of First Successful Submission: 2026-05-22 09:17:42

Matching with *

Time of First Successful Submission: 2026-05-22 09:23:21

Matching with ?

Time of First Successful Submission: 2026-05-22 09:25:10

Matching with []

Time of First Successful Submission: 2026-05-22 09:27:49

Matching paths with []

Time of First Successful Submission: 2026-05-22 09:29:48

Multiple globs

Time of First Successful Submission: 2026-05-22 09:34:43

Mixing globs

Time of First Successful Submission: 2026-05-22 09:46:24

Exclusionary globbing

Time of First Successful Submission: 2026-05-22 09:49:19

Tab completion

Time of First Successful Submission: 2026-05-22 09:51:04

Multiple options for tab completion

Time of First Successful Submission: 2026-05-22 10:58:43

Tab completion on commands

Time of First Successful Submission: 2026-05-22 10:59:46

Redirecting output

Time of First Successful Submission: 2026-05-22 11:39:34

Redirecting more output

Time of First Successful Submission: 2026-05-22 11:44:30

Appending output

Time of First Successful Submission: 2026-05-23 00:38:26

Redirecting errors

Time of First Successful Submission: 2026-05-23 00:42:25

Redirecting input

Time of First Successful Submission: 2026-05-23 00:46:26

Grepping stored results

Time of First Successful Submission: 2026-05-23 00:50:49

Grepping live output

Time of First Successful Submission: 2026-05-23 00:52:59

Grepping errors

Time of First Successful Submission: 2026-05-23 00:56:20

Filtering with grep -v

Time of First Successful Submission: 2026-05-23 00:58:58

Filtering with sed

Time of First Successful Submission: 2026-05-23 01:05:59

Duplicating piped data with tee

Time of First Successful Submission: 2026-05-23 01:50:23

Process substitution for input

Time of First Successful Submission: 2026-05-23 02:05:43

Writing to multiple programs

Time of First Successful Submission: 2026-05-23 02:24:13

Split-piping stderr and stdout

Time of First Successful Submission: 2026-05-23 02:47:31

Named pipes

Time of First Successful Submission: 2026-05-23 03:09:03

Printing Variables

Time of First Successful Submission: 2026-05-23 03:27:14

Setting Variables

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

Multi-word Variables

Time of First Successful Submission: 2026-05-23 07:19:45

Exporting Variables

Time of First Successful Submission: 2026-05-23 07:28:35

Printing Exported Variables

Time of First Successful Submission: 2026-05-23 07:32:59

Storing Command Output

Time of First Successful Submission: 2026-05-23 07:35:50

Reading Input

Time of First Successful Submission: 2026-05-23 07:39:56

Reading Files

Time of First Successful Submission: 2026-05-23 07:42:49

Translating characters

Time of First Successful Submission: 2026-05-23 07:51:20

Deleting characters

Time of First Successful Submission: 2026-05-23 07:52:38

Deleting newlines

Time of First Successful Submission: 2026-05-23 08:08:15

Extracting the first lines with head

Time of First Successful Submission: 2026-05-23 08:12:35

Extracting specific sections of text

Time of First Successful Submission: 2026-05-23 08:19:18

Sorting data

Time of First Successful Submission: 2026-05-23 08:21:48

Listing Processes

Time of First Successful Submission: 2026-05-23 08:27:35

Killing Processes

Time of First Successful Submission: 2026-05-23 08:31:04

Interrupting Processes

Time of First Successful Submission: 2026-05-23 08:32:43

Killing Misbehaving Processes

Time of First Successful Submission: 2026-05-23 08:37:33

Suspending Processes

Time of First Successful Submission: 2026-05-23 08:39:50

Resuming Processes

Time of First Successful Submission: 2026-05-23 08:42:01

Backgrounding Processes

Time of First Successful Submission: 2026-05-23 08:47:34

Foregrounding Processes

Time of First Successful Submission: 2026-05-23 08:52:40

Starting Backgrounded Processes

Time of First Successful Submission: 2026-05-23 08:54:26

Process Exit Codes

Time of First Successful Submission: 2026-05-23 09:01:39

Becoming root with su

Time of First Successful Submission: 2026-05-23 09:17:44

Other users with su

Time of First Successful Submission: 2026-05-23 09:19:35

Cracking passwords

Time of First Successful Submission: 2026-05-24 00:16:53

Using sudo

Time of First Successful Submission: 2026-05-24 00:21:01

Changing File Ownership

Time of First Successful Submission: 2026-05-24 00:30:17

Groups and Files

Time of First Successful Submission: 2026-05-24 00:43:48

Fun With Groups Names

Time of First Successful Submission: 2026-05-24 00:45:58

Changing Permissions

Time of First Successful Submission: 2026-05-24 00:56:15

Executable Files

Time of First Successful Submission: 2026-05-24 00:58:31

Permission Tweaking Practice

Time of First Successful Submission: 2026-05-24 01:04:52

Permissions Setting Practice

Time of First Successful Submission: 2026-05-24 01:15:53

The SUID Bit

Time of First Successful Submission: 2026-05-24 01:28:29

Chaining with Semicolons

Time of First Successful Submission: 2026-05-24 01:55:19

Building on Success

Time of First Successful Submission: 2026-05-24 02:17:15

Handling Failure

Time of First Successful Submission: 2026-05-24 02:20:34

Your First Shell Script

Time of First Successful Submission: 2026-05-24 02:32:50

Redirecting Script Output

Time of First Successful Submission: 2026-05-25 13:03:06

Executable Shell Scripts

Time of First Successful Submission: 2026-05-25 13:09:55

Understanding Shebangs

Time of First Successful Submission: 2026-05-25 13:27:47

Scripting with Arguments

Time of First Successful Submission: 2026-05-25 13:35:10

Scripting with Conditionals

Time of First Successful Submission: 2026-05-25 13:40:38

Scripting with Default Cases

Time of First Successful Submission: 2026-05-25 13:46:11

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-05-25 13:52:54

Reading Shell Scripts

Time of First Successful Submission: 2026-05-25 14:03:40

Launching Screen

Time of First Successful Submission: 2026-05-26 08:48:13

Detaching and Attaching

Time of First Successful Submission: 2026-05-26 08:51:36

Finding Sessions

Time of First Successful Submission: 2026-05-26 08:55:47

Switching Windows

Time of First Successful Submission: 2026-05-26 08:57:47

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-05-26 08:59:56

Switching Windows (tmux)

Time of First Successful Submission: 2026-05-26 09:02:35

The PATH Variable

Time of First Successful Submission: 2026-05-26 11:55:26

Setting PATH

Time of First Successful Submission: 2026-05-26 12:00:47

Finding Commands

Time of First Successful Submission: 2026-05-26 12:07:52

Adding Commands

Time of First Successful Submission: 2026-05-26 12:26:34

Hijacking Commands

Time of First Successful Submission: 2026-05-26 12:51:22

Bashrc Backdoor

Time of First Successful Submission: 2026-05-26 13:09:49

Sniffing Input

Time of First Successful Submission: 2026-05-26 13:32:27

Overshared Directories

Time of First Successful Submission: 2026-05-27 07:35:28

Tricky Linking

Time of First Successful Submission: 2026-05-27 07:53:27

Sniffing Process Arguments

Time of First Successful Submission: 2026-05-27 07:56:04

Snooping on Configurations

Time of First Successful Submission: 2026-05-27 08:01:29

The Fork Bomb

Time of First Successful Submission: 2026-05-27 08:28:19

Disk-Space Doomsday

Time of First Successful Submission: 2026-05-27 08:33:26

rm -rf /

Time of First Successful Submission: 2026-05-27 08:46:37

Life after rm -rf /

Time of First Successful Submission: 2026-05-27 08:54:34

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-05-27 08:59:27


Computing 101

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Your First Register

Time of First Successful Submission: 2026-05-27 09:23:19


DSU Cyber Camps

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Using the Terminal

Time of First Successful Submission: 2026-05-21 08:20:46

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-21 08:25:16

Using the GUI Desktop

Time of First Successful Submission: 2026-05-21 08:28:23

Pasting into the Desktop

Time of First Successful Submission: 2026-05-21 08:31:25

Restarting Challenges

Time of First Successful Submission: 2026-05-21 08:39:48

Challenge Programs

Time of First Successful Submission: 2026-05-22 11:02:26

The Flag File

Time of First Successful Submission: 2026-05-22 11:03:58

Using Privileged Mode

Time of First Successful Submission: 2026-05-25 14:20:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-25 14:24:06

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-25 14:25:27


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-05-21 08:20:46

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-21 08:25:16

Using the GUI Desktop

Time of First Successful Submission: 2026-05-21 08:28:23

Pasting into the Desktop

Time of First Successful Submission: 2026-05-21 08:31:25

Restarting Challenges

Time of First Successful Submission: 2026-05-21 08:39:48

Challenge Programs

Time of First Successful Submission: 2026-05-22 11:02:26

The Flag File

Time of First Successful Submission: 2026-05-22 11:03:58

Using Privileged Mode

Time of First Successful Submission: 2026-05-25 14:20:35

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-25 14:24:06

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-25 14:25:27