quickd

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-11-25 15:22:44

Command Arguments

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Command History

Time of First Successful Submission: 2025-11-25 15:24:08

The Root Path

Time of First Successful Submission: 2025-11-25 15:25:14

Absolute Paths

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Changing position

Time of First Successful Submission: 2025-11-25 15:26:58

Changing to an Absolute Path

Time of First Successful Submission: 2025-11-25 15:28:15

Relative Paths

Time of First Successful Submission: 2025-11-25 15:29:19

Cat

Time of First Successful Submission: 2025-11-25 15:35:06

Ls

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Ls All

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Find

Time of First Successful Submission: 2025-11-25 16:02:20

Piping Echo

Time of First Successful Submission: 2025-11-25 16:53:54

Piping Stdout

Time of First Successful Submission: 2025-11-25 16:56:30

Piping Stdin

Time of First Successful Submission: 2025-11-26 04:26:51


Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2025-11-28 10:55:01

Path Traversal 2

Time of First Successful Submission: 2025-11-28 11:03:42

CMDi 1

Time of First Successful Submission: 2025-11-28 11:06:07

CMDi 2

Time of First Successful Submission: 2025-11-28 11:13:48

CMDi 3

Time of First Successful Submission: 2025-11-28 11:15:40

CMDi 4

Time of First Successful Submission: 2025-11-28 11:17:46

CMDi 5

Time of First Successful Submission: 2025-11-28 12:09:45

CMDi 6

Time of First Successful Submission: 2025-11-28 12:37:08

Authentication Bypass 1

Time of First Successful Submission: 2025-11-28 12:34:33

Authentication Bypass 2

Time of First Successful Submission: 2025-11-28 12:41:11

SQLi 1

Time of First Successful Submission: 2025-11-28 12:55:00

SQLi 2

Time of First Successful Submission: 2025-11-28 13:02:28

SQLi 3

Time of First Successful Submission: 2025-11-28 13:15:58

SQLi 4

Time of First Successful Submission: 2025-11-28 13:28:23

SQLi 5

Time of First Successful Submission: 2025-11-28 14:06:27


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-11-25 14:39:44

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-25 14:42:09

Using the GUI Desktop

Time of First Successful Submission: 2025-11-25 14:46:53

Pasting into the Desktop

Time of First Successful Submission: 2025-11-25 14:49:21

Restarting Challenges

Time of First Successful Submission: 2025-11-25 14:53:55

Challenge Programs

Time of First Successful Submission: 2025-11-25 14:56:00

The Flag File

Time of First Successful Submission: 2025-11-25 14:58:04

Using Privileged Mode

Time of First Successful Submission: 2025-11-25 15:11:08

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-25 15:15:19

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-25 15:16:58


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-11-25 15:22:44

Intro to Arguments

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Command History

Time of First Successful Submission: 2025-11-25 15:24:08

The Root

Time of First Successful Submission: 2025-11-25 15:25:14

Program and absolute paths

Time of First Successful Submission: 2025-11-25 15:25:46

Position thy self

Time of First Successful Submission: 2025-11-25 15:26:58

Position elsewhere

Time of First Successful Submission: 2025-11-25 15:28:15

implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

Time of First Successful Submission: 2025-11-25 15:30:37

home sweet home

Time of First Successful Submission: 2025-11-25 15:34:16

cat: not the pet, but the command!

Time of First Successful Submission: 2025-11-25 15:35:06

catting absolute paths

Time of First Successful Submission: 2025-11-25 15:35:27

more catting practice

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grepping for a needle in a haystack

Time of First Successful Submission: 2025-11-25 15:36:51

comparing files

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listing files

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touching files

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removing files

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moving files

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copying files

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hidden files

Time of First Successful Submission: 2025-11-25 15:51:37

An Epic Filesystem Quest

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making directories

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finding files

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linking files

Time of First Successful Submission: 2025-11-25 16:10:21

Learning From Documentation

Time of First Successful Submission: 2025-11-25 16:11:30

Learning Complex Usage

Time of First Successful Submission: 2025-11-25 16:12:28

Reading Manuals

Time of First Successful Submission: 2025-11-25 16:16:14

Searching Manuals

Time of First Successful Submission: 2025-11-25 16:20:35

Searching For Manuals

Time of First Successful Submission: 2025-11-25 16:25:16

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

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Redirecting more output

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Appending output

Time of First Successful Submission: 2025-11-26 04:06:47

Redirecting errors

Time of First Successful Submission: 2025-11-26 04:09:41

Redirecting input

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Grepping stored results

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Grepping live output

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Grepping errors

Time of First Successful Submission: 2025-11-26 04:29:43

Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

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Process substitution for input

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Writing to multiple programs

Time of First Successful Submission: 2025-11-26 05:24:50

Split-piping stderr and stdout

Time of First Successful Submission: 2025-11-26 05:13:29

Named pipes

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Printing Variables

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Setting Variables

Time of First Successful Submission: 2025-11-26 05:32:28

Multi-word Variables

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Exporting Variables

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Printing Exported Variables

Time of First Successful Submission: 2025-11-26 05:46:28

Storing Command Output

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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: 2025-11-26 08:37:26

Using sudo

Time of First Successful Submission: 2025-11-26 08:39:16

Changing File Ownership

Time of First Successful Submission: 2025-11-26 08:52:19

Groups and Files

Time of First Successful Submission: 2025-11-26 08:54:07

Fun With Groups Names

Time of First Successful Submission: 2025-11-26 08:55:01

Changing Permissions

Time of First Successful Submission: 2025-11-26 09:01:01

Executable Files

Time of First Successful Submission: 2025-11-26 09:02:18

Permission Tweaking Practice

Time of First Successful Submission: 2025-11-26 09:15:22

Permissions Setting Practice

Time of First Successful Submission: 2025-11-26 09:18:17

The SUID Bit

Time of First Successful Submission: 2025-11-26 09:37:27

Chaining with Semicolons

Time of First Successful Submission: 2025-11-26 09:43:48

Building on Success

Time of First Successful Submission: 2025-11-26 09:44:20

Handling Failure

Time of First Successful Submission: 2025-11-26 09:45:36

Your First Shell Script

Time of First Successful Submission: 2025-11-26 09:47:35

Redirecting Script Output

Time of First Successful Submission: 2025-11-26 09:48:31

Executable Shell Scripts

Time of First Successful Submission: 2025-11-26 09:49:37

Understanding Shebangs

Time of First Successful Submission: 2025-11-26 09:54:49

Scripting with Arguments

Time of First Successful Submission: 2025-11-26 09:56:21

Scripting with Conditionals

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Scripting with Default Cases

Time of First Successful Submission: 2025-11-26 09:59:28

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-26 10:03:04

Reading Shell Scripts

Time of First Successful Submission: 2025-11-26 10:04:01

Launching Screen

Time of First Successful Submission: 2025-11-26 10:05:11

Detaching and Attaching

Time of First Successful Submission: 2025-11-26 10:06:34

Finding Sessions

Time of First Successful Submission: 2025-11-26 10:09:46

Switching Windows

Time of First Successful Submission: 2025-11-26 10:11:03

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-26 10:12:26

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-26 10:13:16

The PATH Variable

Time of First Successful Submission: 2025-11-26 10:14:25

Setting PATH

Time of First Successful Submission: 2025-11-26 10:15:17

Finding Commands

Time of First Successful Submission: 2025-11-26 10:16:01

Adding Commands

Time of First Successful Submission: 2025-11-26 10:21:43

Hijacking Commands

Time of First Successful Submission: 2025-11-26 10:27:59

Bashrc Backdoor

Time of First Successful Submission: 2025-11-26 10:31:10

Sniffing Input

Time of First Successful Submission: 2025-11-26 11:05:34

Overshared Directories

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Tricky Linking

Time of First Successful Submission: 2025-11-26 11:47:56

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-26 11:32:03

Snooping on Configurations

Time of First Successful Submission: 2025-11-26 11:34:12

The Fork Bomb

Time of First Successful Submission: 2025-11-26 12:00:09

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-26 12:06:58

rm -rf /

Time of First Successful Submission: 2025-11-26 12:09:21

Life after rm -rf /

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Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-26 12:20:46


Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-11-26 12:29:46

... and again!

Time of First Successful Submission: 2025-11-26 12:30:23

Newline Troubles

Time of First Successful Submission: 2025-11-26 12:34:11

Reasoning about files

Time of First Successful Submission: 2025-11-26 12:38:49

Specifying Filenames

Time of First Successful Submission: 2025-11-26 12:39:40

Binary and Hex Encoding

Time of First Successful Submission: 2025-11-26 16:18:48

More Hex

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Decoding Hex

Time of First Successful Submission: 2025-11-26 16:48:56

Decoding Practice

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Encoding Practice

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Hex-encoding ASCII

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Nested Encoding

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Hex-encoding UTF-8

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UTF Mixups

Time of First Successful Submission: 2025-11-26 17:52:23

Modifying Encoded Data

Time of First Successful Submission: 2025-11-26 17:55:36

Decoding Base64

Time of First Successful Submission: 2025-11-26 18:01:02

Encoding Base64

Time of First Successful Submission: 2025-11-26 18:07:17

Dealing with Obfuscation

Time of First Successful Submission: 2025-11-26 18:13:00

Dealing with Obfuscation 2

Time of First Successful Submission: 2025-11-26 18:21:45

Your First HTTP Request

Time of First Successful Submission: 2025-11-26 18:27:05

Reading Flask

Time of First Successful Submission: 2025-11-26 18:32:27

Commented Data

Time of First Successful Submission: 2025-11-27 04:34:59

HTTP Metadata

Time of First Successful Submission: 2025-11-27 04:36:32

HTTP (netcat)

Time of First Successful Submission: 2025-11-27 04:39:50

HTTP Paths (netcat)

Time of First Successful Submission: 2025-11-27 04:41:40

HTTP (curl)

Time of First Successful Submission: 2025-11-27 04:42:06

HTTP (python)

Time of First Successful Submission: 2025-11-27 06:13:03

HTTP Host Header (python)

Time of First Successful Submission: 2025-11-27 04:47:59

HTTP Host Header (curl)

Time of First Successful Submission: 2025-11-27 04:49:55

HTTP Host Header (netcat)

Time of First Successful Submission: 2025-11-27 04:51:52

URL Encoding (netcat)

Time of First Successful Submission: 2025-11-27 04:56:13

HTTP GET Parameters

Time of First Successful Submission: 2025-11-27 04:57:45

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2025-11-27 05:00:09

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2025-11-27 05:02:53

HTTP Forms

Time of First Successful Submission: 2025-11-27 05:05:03

HTTP Forms (curl)

Time of First Successful Submission: 2025-11-27 05:07:08

HTTP Forms (netcat)

Time of First Successful Submission: 2025-11-27 05:14:42

HTTP Forms (python)

Time of First Successful Submission: 2025-11-27 05:16:56

HTTP Forms Without Forms

Time of First Successful Submission: 2025-11-27 05:27:27

Multiple Form Fields (curl)

Time of First Successful Submission: 2025-11-27 05:28:58

Multiple Form Fields (netcat)

Time of First Successful Submission: 2025-11-27 05:31:56

HTTP Redirects (netcat)

Time of First Successful Submission: 2025-11-27 05:34:16

HTTP Redirects (curl)

Time of First Successful Submission: 2025-11-27 05:35:50

HTTP Redirects (python)

Time of First Successful Submission: 2025-11-27 05:38:09

HTTP Cookies (curl)

Time of First Successful Submission: 2025-11-27 05:48:41

HTTP Cookies (netcat)

Time of First Successful Submission: 2025-11-27 05:51:12

HTTP Cookies (python)

Time of First Successful Submission: 2025-11-27 05:53:37

Server State (python)

Time of First Successful Submission: 2025-11-27 06:06:36

Listening Web

Time of First Successful Submission: 2025-11-27 06:10:55

Speaking Redirects

Time of First Successful Submission: 2025-11-27 06:36:19

JavaScript Redirects

Time of First Successful Submission: 2025-11-27 06:43:17

Including JavaScript

Time of First Successful Submission: 2025-11-27 10:52:44

HTTP (javascript)

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HTTP Get Parameters (javascript)

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HTTP Forms (javascript)

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cat

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more

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less

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tail

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head

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sort

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vim

Time of First Successful Submission: 2025-11-27 12:00:18

emacs

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nano

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rev

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od

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hd

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xxd

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base32

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base64

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split

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gzip

Time of First Successful Submission: 2025-11-27 12:21:37

bzip2

Time of First Successful Submission: 2025-11-27 12:22:09

zip

Time of First Successful Submission: 2025-11-27 12:25:58

tar

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ar

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cpio

Time of First Successful Submission: 2025-11-27 13:00:43

genisoimage

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env

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find

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make

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nice

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timeout

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stdbuf

Time of First Successful Submission: 2025-11-27 16:26:19

setarch

Time of First Successful Submission: 2025-11-27 17:43:47

watch

Time of First Successful Submission: 2025-11-28 04:24:23

socat

Time of First Successful Submission: 2025-11-28 04:29:24

whiptail

Time of First Successful Submission: 2025-11-28 04:35:39

awk

Time of First Successful Submission: 2025-11-28 04:37:28

sed

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ed

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chown

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chmod

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cp

Time of First Successful Submission: 2025-11-28 04:46:30

mv

Time of First Successful Submission: 2025-11-28 06:45:29

perl

Time of First Successful Submission: 2025-11-28 05:09:44

python

Time of First Successful Submission: 2025-11-28 05:10:14

ruby

Time of First Successful Submission: 2025-11-28 06:08:49

bash

Time of First Successful Submission: 2025-11-28 05:20:54

date

Time of First Successful Submission: 2025-11-28 05:22:45

dmesg

Time of First Successful Submission: 2025-11-28 05:23:10

wc

Time of First Successful Submission: 2025-11-28 05:23:41

gcc

Time of First Successful Submission: 2025-11-28 05:24:12

as

Time of First Successful Submission: 2025-11-28 05:24:37

wget

Time of First Successful Submission: 2025-11-28 06:03:00

ssh-keygen

Time of First Successful Submission: 2025-11-28 06:15:55

SQL Queries

Time of First Successful Submission: 2025-11-27 16:28:31

Filtering SQL

Time of First Successful Submission: 2025-11-27 16:29:52

Choosing Columns

Time of First Successful Submission: 2025-11-27 16:32:20

Exclusionary Filtering

Time of First Successful Submission: 2025-11-27 16:34:22

Filtering Strings

Time of First Successful Submission: 2025-11-27 16:36:00

Filtering on Expressions

Time of First Successful Submission: 2025-11-27 16:38:53

SELECTing Expressions

Time of First Successful Submission: 2025-11-27 17:42:35

Composite Conditions

Time of First Successful Submission: 2025-11-27 17:01:25

Reaching Your LIMITs

Time of First Successful Submission: 2025-11-27 17:05:27

Querying Metadata

Time of First Successful Submission: 2025-11-27 17:09:34


GCA CTF

11 / 104 7170 / 43515


Using the Terminal

Time of First Successful Submission: 2025-11-25 14:39:44

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-25 14:42:09

Using the GUI Desktop

Time of First Successful Submission: 2025-11-25 14:46:53

Pasting into the Desktop

Time of First Successful Submission: 2025-11-25 14:49:21

Connecting over SSH

Time of First Successful Submission: 2025-11-25 14:50:27

Restarting Challenges

Time of First Successful Submission: 2025-11-25 14:53:55

Challenge Programs

Time of First Successful Submission: 2025-11-25 14:56:00

The Flag File

Time of First Successful Submission: 2025-11-25 14:58:04

Using Privileged Mode

Time of First Successful Submission: 2025-11-25 15:11:08

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-25 15:15:19

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-25 15:16:58