jParkerS_734

🐧 💻

German

Germany

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-04-05 17:25:51

Command Arguments

Time of First Successful Submission: 2026-04-05 17:28:26

Command History

Time of First Successful Submission: 2026-04-05 17:29:57

The Root Path

Time of First Successful Submission: 2026-04-05 17:38:01

Absolute Paths

Time of First Successful Submission: 2026-04-05 17:43:00

Changing position

Time of First Successful Submission: 2026-04-05 18:32:45

Changing to an Absolute Path

Time of First Successful Submission: 2026-04-05 18:35:40

Relative Paths

Time of First Successful Submission: 2026-04-05 18:38:04

Cat

Time of First Successful Submission: 2026-04-06 19:04:25

Ls

Time of First Successful Submission: 2026-04-06 19:15:44

Ls All

Time of First Successful Submission: 2026-04-06 19:27:49

Find

Time of First Successful Submission: 2026-04-06 19:52:13

Piping Echo

Time of First Successful Submission: 2026-04-10 19:51:45

Piping Stdout

Time of First Successful Submission: 2026-04-10 19:53:53

Piping Stdin

Time of First Successful Submission: 2026-04-10 20:37:30

Start Here

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Using the Terminal

Time of First Successful Submission: 2026-04-04 18:46:41

Using the VSCode Workspace

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

Using the GUI Desktop

Time of First Successful Submission: 2026-04-04 18:58:20

Pasting into the Desktop

Time of First Successful Submission: 2026-04-18 19:53:26

Restarting Challenges

Time of First Successful Submission: 2026-04-18 20:27:32

Challenge Programs

Time of First Successful Submission: 2026-04-04 19:01:57

The Flag File

Time of First Successful Submission: 2026-04-04 19:08:13

Using Privileged Mode

Time of First Successful Submission: 2026-04-19 09:08:01

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-19 09:16:48

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-19 09:18:22

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-04-05 17:25:51

Intro to Arguments

Time of First Successful Submission: 2026-04-05 17:28:26

Command History

Time of First Successful Submission: 2026-04-05 17:29:57

The Root

Time of First Successful Submission: 2026-04-05 17:38:01

Program and absolute paths

Time of First Successful Submission: 2026-04-05 17:43:00

Position thy self

Time of First Successful Submission: 2026-04-05 18:32:45

Position elsewhere

Time of First Successful Submission: 2026-04-05 18:35:40

implicit relative paths, from /

Time of First Successful Submission: 2026-04-05 18:38:04

explicit relative paths, from /

Time of First Successful Submission: 2026-04-05 18:43:05

implicit relative path

Time of First Successful Submission: 2026-04-05 18:44:12

home sweet home

Time of First Successful Submission: 2026-04-05 18:48:29

cat: not the pet, but the command!

Time of First Successful Submission: 2026-04-06 19:04:25

catting absolute paths

Time of First Successful Submission: 2026-04-06 19:06:03

more catting practice

Time of First Successful Submission: 2026-04-06 19:07:42

grepping for a needle in a haystack

Time of First Successful Submission: 2026-04-06 19:09:25

comparing files

Time of First Successful Submission: 2026-04-06 19:13:45

listing files

Time of First Successful Submission: 2026-04-06 19:15:44

touching files

Time of First Successful Submission: 2026-04-06 19:19:38

removing files

Time of First Successful Submission: 2026-04-06 19:20:48

moving files

Time of First Successful Submission: 2026-04-06 19:22:45

copying files

Time of First Successful Submission: 2026-04-06 19:23:41

hidden files

Time of First Successful Submission: 2026-04-06 19:27:49

An Epic Filesystem Quest

Time of First Successful Submission: 2026-04-06 19:43:47

making directories

Time of First Successful Submission: 2026-04-06 19:49:42

finding files

Time of First Successful Submission: 2026-04-06 19:52:13

linking files

Time of First Successful Submission: 2026-04-06 20:01:37

Learning From Documentation

Time of First Successful Submission: 2026-04-07 18:29:19

Learning Complex Usage

Time of First Successful Submission: 2026-04-07 19:18:30

Reading Manuals

Time of First Successful Submission: 2026-04-07 18:40:37

Searching Manuals

Time of First Successful Submission: 2026-04-07 18:47:57

Searching For Manuals

Time of First Successful Submission: 2026-04-07 19:29:34

Helpful Programs

Time of First Successful Submission: 2026-04-07 19:03:53

Help for Builtins

Time of First Successful Submission: 2026-04-07 19:08:16

Matching with *

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

Matching with ?

Time of First Successful Submission: 2026-04-08 19:20:46

Matching with []

Time of First Successful Submission: 2026-04-08 19:25:28

Matching paths with []

Time of First Successful Submission: 2026-04-08 19:27:33

Multiple globs

Time of First Successful Submission: 2026-04-08 19:30:34

Mixing globs

Time of First Successful Submission: 2026-04-08 19:39:35

Exclusionary globbing

Time of First Successful Submission: 2026-04-08 19:41:28

Tab completion

Time of First Successful Submission: 2026-04-08 19:44:57

Multiple options for tab completion

Time of First Successful Submission: 2026-04-08 19:56:09

Tab completion on commands

Time of First Successful Submission: 2026-04-08 19:59:32

Redirecting output

Time of First Successful Submission: 2026-04-10 19:51:45

Redirecting more output

Time of First Successful Submission: 2026-04-10 19:53:53

Appending output

Time of First Successful Submission: 2026-04-10 19:58:38

Redirecting errors

Time of First Successful Submission: 2026-04-10 20:33:36

Redirecting input

Time of First Successful Submission: 2026-04-10 20:37:30

Grepping stored results

Time of First Successful Submission: 2026-04-10 20:44:09

Grepping live output

Time of First Successful Submission: 2026-04-10 20:45:57

Grepping errors

Time of First Successful Submission: 2026-04-11 06:14:06

Filtering with grep -v

Time of First Successful Submission: 2026-04-11 06:16:14

Filtering with sed

Time of First Successful Submission: 2026-04-11 06:18:43

Duplicating piped data with tee

Time of First Successful Submission: 2026-04-11 06:27:44

Process substitution for input

Time of First Successful Submission: 2026-04-11 06:33:37

Writing to multiple programs

Time of First Successful Submission: 2026-04-11 06:57:36

Split-piping stderr and stdout

Time of First Successful Submission: 2026-04-11 07:22:57

Named pipes

Time of First Successful Submission: 2026-04-11 07:41:07

Printing Variables

Time of First Successful Submission: 2026-04-11 16:03:13

Setting Variables

Time of First Successful Submission: 2026-04-11 16:05:22

Multi-word Variables

Time of First Successful Submission: 2026-04-11 16:07:09

Exporting Variables

Time of First Successful Submission: 2026-04-11 16:10:49

Printing Exported Variables

Time of First Successful Submission: 2026-04-11 16:12:52

Storing Command Output

Time of First Successful Submission: 2026-04-11 16:16:23

Reading Input

Time of First Successful Submission: 2026-04-11 16:19:20

Reading Files

Time of First Successful Submission: 2026-04-11 16:23:23

Translating characters

Time of First Successful Submission: 2026-04-11 18:43:26

Deleting characters

Time of First Successful Submission: 2026-04-11 18:49:52

Deleting newlines

Time of First Successful Submission: 2026-04-11 18:52:42

Extracting the first lines with head

Time of First Successful Submission: 2026-04-11 18:57:03

Extracting specific sections of text

Time of First Successful Submission: 2026-04-11 19:07:09

Sorting data

Time of First Successful Submission: 2026-04-11 19:10:51

Listing Processes

Time of First Successful Submission: 2026-04-12 07:07:27

Killing Processes

Time of First Successful Submission: 2026-04-12 07:11:23

Interrupting Processes

Time of First Successful Submission: 2026-04-12 07:52:14

Killing Misbehaving Processes

Time of First Successful Submission: 2026-04-12 08:23:55

Suspending Processes

Time of First Successful Submission: 2026-04-12 07:25:54

Resuming Processes

Time of First Successful Submission: 2026-04-12 07:27:42

Backgrounding Processes

Time of First Successful Submission: 2026-04-12 07:42:35

Foregrounding Processes

Time of First Successful Submission: 2026-04-12 07:47:00

Starting Backgrounded Processes

Time of First Successful Submission: 2026-04-12 07:47:52

Process Exit Codes

Time of First Successful Submission: 2026-04-12 07:50:28

Becoming root with su

Time of First Successful Submission: 2026-04-12 13:24:50

Other users with su

Time of First Successful Submission: 2026-04-12 13:26:24

Cracking passwords

Time of First Successful Submission: 2026-04-12 13:35:06

Using sudo

Time of First Successful Submission: 2026-04-12 13:40:29

Changing File Ownership

Time of First Successful Submission: 2026-04-12 21:35:01

Groups and Files

Time of First Successful Submission: 2026-04-12 21:41:45

Fun With Groups Names

Time of First Successful Submission: 2026-04-12 21:43:45

Changing Permissions

Time of First Successful Submission: 2026-04-12 21:50:00

Executable Files

Time of First Successful Submission: 2026-04-12 21:55:13

Permission Tweaking Practice

Time of First Successful Submission: 2026-04-12 22:05:32

Permissions Setting Practice

Time of First Successful Submission: 2026-04-13 08:58:53

The SUID Bit

Time of First Successful Submission: 2026-04-13 09:12:00

Chaining with Semicolons

Time of First Successful Submission: 2026-04-13 16:18:04

Building on Success

Time of First Successful Submission: 2026-04-13 16:19:41

Handling Failure

Time of First Successful Submission: 2026-04-13 16:21:00

Your First Shell Script

Time of First Successful Submission: 2026-04-13 16:26:28

Redirecting Script Output

Time of First Successful Submission: 2026-04-13 16:55:48

Executable Shell Scripts

Time of First Successful Submission: 2026-04-13 18:34:13

Understanding Shebangs

Time of First Successful Submission: 2026-04-13 18:40:17

Scripting with Arguments

Time of First Successful Submission: 2026-04-13 18:45:15

Scripting with Conditionals

Time of First Successful Submission: 2026-04-13 18:48:52

Scripting with Default Cases

Time of First Successful Submission: 2026-04-13 18:50:26

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-04-13 19:01:12

Reading Shell Scripts

Time of First Successful Submission: 2026-04-13 19:04:45

Launching Screen

Time of First Successful Submission: 2026-04-13 19:16:34

Detaching and Attaching

Time of First Successful Submission: 2026-04-13 19:19:03

Finding Sessions

Time of First Successful Submission: 2026-04-13 19:23:48

Switching Windows

Time of First Successful Submission: 2026-04-13 19:29:49

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-04-13 19:33:00

Switching Windows (tmux)

Time of First Successful Submission: 2026-04-13 19:36:12

The PATH Variable

Time of First Successful Submission: 2026-04-14 19:00:32

Setting PATH

Time of First Successful Submission: 2026-04-14 19:02:12

Finding Commands

Time of First Successful Submission: 2026-04-14 19:08:43

Adding Commands

Time of First Successful Submission: 2026-04-14 19:27:59

Hijacking Commands

Time of First Successful Submission: 2026-04-14 19:36:58

Bashrc Backdoor

Time of First Successful Submission: 2026-04-14 19:45:23

Sniffing Input

Time of First Successful Submission: 2026-04-16 17:05:41

Overshared Directories

Time of First Successful Submission: 2026-04-16 17:27:27

Tricky Linking

Time of First Successful Submission: 2026-04-17 07:17:00

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-17 19:12:53

Snooping on Configurations

Time of First Successful Submission: 2026-04-17 19:17:07

The Fork Bomb

Time of First Successful Submission: 2026-04-17 19:34:04

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-17 19:39:46

rm -rf /

Time of First Successful Submission: 2026-04-17 19:45:34

Life after rm -rf /

Time of First Successful Submission: 2026-04-17 20:28:22

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-17 20:49:05

Computing 101

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Your First Register

Time of First Successful Submission: 2026-04-19 15:54:25

Your First Syscall

Time of First Successful Submission: 2026-04-19 15:57:29

Exit Codes

Time of First Successful Submission: 2026-04-19 16:00:41

Building Executables

Time of First Successful Submission: 2026-04-19 16:17:31

Moving Between Registers

Time of First Successful Submission: 2026-04-19 16:26:50

Loading From Memory

Time of First Successful Submission: 2026-04-20 21:05:39

More Loading Practice

Time of First Successful Submission: 2026-04-20 21:08:11

Dereferencing Pointers

Time of First Successful Submission: 2026-04-20 21:13:37

Dereferencing Yourself

Time of First Successful Submission: 2026-04-20 21:24:25

Dereferencing with Offsets

Time of First Successful Submission: 2026-04-20 21:29:47

Stored Addresses

Time of First Successful Submission: 2026-04-20 21:37:30

Double Dereference

Time of First Successful Submission: 2026-04-21 08:21:20

The Stack

Time of First Successful Submission: 2026-04-21 08:27:12

Stack Offsets

Time of First Successful Submission: 2026-04-21 08:29:35

Program Arguments on the Stack

Time of First Successful Submission: 2026-04-21 08:37:10

Popping From the Stack

Time of First Successful Submission: 2026-04-21 08:41:48

Disassembling Programs

Time of First Successful Submission: 2026-04-21 14:22:23

Tracing Syscalls

Time of First Successful Submission: 2026-04-21 14:28:14

Starting GDB

Time of First Successful Submission: 2026-04-21 14:32:15

Quitting GDB

Time of First Successful Submission: 2026-04-21 14:34:20

Starting Programs in GDB

Time of First Successful Submission: 2026-04-21 14:39:26

Disassembling in GDB

Time of First Successful Submission: 2026-04-21 14:41:08

Stepping Through Instructions

Time of First Successful Submission: 2026-04-21 14:45:04

Reading Register Values

Time of First Successful Submission: 2026-04-21 14:48:10

Popping Stack Values

Time of First Successful Submission: 2026-04-21 14:50:48

Examining Memory

Time of First Successful Submission: 2026-04-21 17:25:10

Examining Stack Pointers

Time of First Successful Submission: 2026-04-21 17:38:45

Cooperative Debugging

Time of First Successful Submission: 2026-04-21 19:00:22

Writing Output

Time of First Successful Submission: 2026-04-21 20:05:52

Chaining Syscalls

Time of First Successful Submission: 2026-04-21 20:26:28

Writing Strings

Time of First Successful Submission: 2026-04-22 06:51:50

Reading Data

Time of First Successful Submission: 2026-04-22 07:10:51

Opening Files

Time of First Successful Submission: 2026-04-22 19:53:16

Hardcoding the Filename

Time of First Successful Submission: 2026-04-22 20:06:04

Comparing Values

Time of First Successful Submission: 2026-04-23 18:56:19

Comparing Characters

Time of First Successful Submission: 2026-04-23 19:02:20

Conditional Control Flow

Time of First Successful Submission: 2026-04-23 19:12:33

Comparing Strings

Time of First Successful Submission: 2026-04-23 19:17:28

Reverse the Password

Time of First Successful Submission: 2026-04-23 19:37:08

Conditionals Without Conditionals

Time of First Successful Submission: 2026-04-24 07:02:55

Looping

Time of First Successful Submission: 2026-04-24 19:53:31

Reverse the Calculation

Time of First Successful Submission: 2026-04-24 20:00:15

Reverse the Reverse

Time of First Successful Submission: 2026-04-24 20:06:24

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-04-24 20:14:14

Loops on Data

Time of First Successful Submission: 2026-04-24 20:20:20

set-register

Time of First Successful Submission: 2026-04-24 20:37:51

set-multiple-registers

Time of First Successful Submission: 2026-04-25 09:42:08

add-to-register

Time of First Successful Submission: 2026-04-25 10:05:18

linear-equation-registers

Time of First Successful Submission: 2026-04-25 18:57:14

integer-division

Time of First Successful Submission: 2026-04-25 19:07:55

modulo-operation

Time of First Successful Submission: 2026-04-25 19:21:26

set-upper-byte

Time of First Successful Submission: 2026-04-25 19:29:09

efficient-modulo

Time of First Successful Submission: 2026-04-25 19:40:52

byte-extraction

Time of First Successful Submission: 2026-04-25 19:49:08

bitwise-and

Time of First Successful Submission: 2026-04-25 19:59:08

check-even

Time of First Successful Submission: 2026-04-26 06:42:20

memory-read

Time of First Successful Submission: 2026-04-26 06:47:35

memory-write

Time of First Successful Submission: 2026-04-26 06:50:05

memory-increment

Time of First Successful Submission: 2026-04-26 06:59:44

byte-access

Time of First Successful Submission: 2026-04-26 08:53:37

memory-size-access

Time of First Successful Submission: 2026-04-26 07:20:23

little-endian-write

Time of First Successful Submission: 2026-04-27 06:31:40

memory-sum

Time of First Successful Submission: 2026-04-27 06:41:33

stack-subtraction

Time of First Successful Submission: 2026-04-27 06:45:36

swap-stack-values

Time of First Successful Submission: 2026-04-27 06:48:16

average-stack-values

Time of First Successful Submission: 2026-04-27 07:18:55

absolute-jump

Time of First Successful Submission: 2026-04-27 07:43:21

relative-jump

Time of First Successful Submission: 2026-04-27 19:19:13

jump-trampoline

Time of First Successful Submission: 2026-04-27 19:24:44

conditional-jump

Time of First Successful Submission: 2026-04-28 16:45:15

indirect-jump

Time of First Successful Submission: 2026-04-28 18:50:53

average-loop

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

count-non-zero

Time of First Successful Submission: 2026-04-28 19:26:47

string-lower

Time of First Successful Submission: 2026-04-28 19:31:43

most-common-byte

Time of First Successful Submission: 2026-04-28 19:34:31

Exit

Time of First Successful Submission: 2026-04-29 20:04:59

Socket

Time of First Successful Submission: 2026-04-29 20:18:23

Bind

Time of First Successful Submission: 2026-04-29 20:25:10

Listen

Time of First Successful Submission: 2026-04-29 20:27:00

Accept

Time of First Successful Submission: 2026-04-29 20:29:17

Static Response

Time of First Successful Submission: 2026-04-29 20:33:00

Dynamic Response

Time of First Successful Submission: 2026-04-29 20:38:39

Iterative GET Server

Time of First Successful Submission: 2026-04-29 20:40:57

Concurrent GET Server

Time of First Successful Submission: 2026-04-29 20:43:43

Concurrent POST Server

Time of First Successful Submission: 2026-04-30 19:04:58

Web Server

Time of First Successful Submission: 2026-04-30 19:06:19

Debugging Programs

Time of First Successful Submission: 2026-04-30 19:36:35

Inspecting Registers

Time of First Successful Submission: 2026-05-01 18:10:13

Examining Memory

Time of First Successful Submission: 2026-05-01 18:40:48

Setting Breakpoints

Time of First Successful Submission: 2026-05-02 18:23:45

GDB Scripting

Time of First Successful Submission: 2026-05-03 20:12:11

Modifying Data

Time of First Successful Submission: 2026-05-04 19:20:53

Modifying Execution

Time of First Successful Submission: 2026-05-04 19:48:17

Broken Functions

Time of First Successful Submission: 2026-05-04 20:04:38

Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-05-05 19:14:12

... and again!

Time of First Successful Submission: 2026-05-05 19:15:46

Newline Troubles

Time of First Successful Submission: 2026-05-05 19:24:23

Reasoning about files

Time of First Successful Submission: 2026-05-05 19:31:26

Specifying Filenames

Time of First Successful Submission: 2026-05-05 19:34:21

Binary and Hex Encoding

Time of First Successful Submission: 2026-05-05 19:45:31

More Hex

Time of First Successful Submission: 2026-05-05 19:49:01

Decoding Hex

Time of First Successful Submission: 2026-05-05 20:01:59

Decoding Practice

Time of First Successful Submission: 2026-05-06 19:49:59

Encoding Practice

Time of First Successful Submission: 2026-05-06 19:57:53

Hex-encoding ASCII

Time of First Successful Submission: 2026-05-07 20:05:57

Nested Encoding

Time of First Successful Submission: 2026-05-07 20:16:18

Hex-encoding UTF-8

Time of First Successful Submission: 2026-05-08 18:58:47

UTF Mixups

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

Modifying Encoded Data

Time of First Successful Submission: 2026-05-08 20:00:59

Decoding Base64

Time of First Successful Submission: 2026-05-09 16:19:12

Encoding Base64

Time of First Successful Submission: 2026-05-09 18:28:56

Dealing with Obfuscation

Time of First Successful Submission: 2026-05-10 13:48:44

GCA CTF

12 / 104 2430 / 45599

Using the Terminal

Time of First Successful Submission: 2026-04-04 18:46:41

Using the VSCode Workspace

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

Using the GUI Desktop

Time of First Successful Submission: 2026-04-04 18:58:20

Pasting into the Desktop

Time of First Successful Submission: 2026-04-18 19:53:26

Connecting over SSH

Time of First Successful Submission: 2026-04-19 09:01:19

Restarting Challenges

Time of First Successful Submission: 2026-04-18 20:27:32

Getting Help

Time of First Successful Submission: 2026-04-18 20:30:20

Challenge Programs

Time of First Successful Submission: 2026-04-04 19:01:57

The Flag File

Time of First Successful Submission: 2026-04-04 19:08:13

Using Privileged Mode

Time of First Successful Submission: 2026-04-19 09:08:01

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-19 09:16:48

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-19 09:18:22