0xS0N1C

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Intro to Programming Languages

15 / 234 9634 / 33082


Commands

Time of First Successful Submission: 2026-04-03 14:31:03

Command Arguments

Time of First Successful Submission: 2026-04-03 14:31:31

Command History

Time of First Successful Submission: 2026-04-03 14:32:03

The Root Path

Time of First Successful Submission: 2026-04-03 14:33:37

Absolute Paths

Time of First Successful Submission: 2026-04-03 14:39:01

Changing position

Time of First Successful Submission: 2026-04-03 14:39:56

Changing to an Absolute Path

Time of First Successful Submission: 2026-04-04 09:29:57

Relative Paths

Time of First Successful Submission: 2026-04-04 09:40:43

Cat

Time of First Successful Submission: 2026-04-04 09:48:37

Ls

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

Ls All

Time of First Successful Submission: 2026-04-04 10:00:00

Find

Time of First Successful Submission: 2026-04-04 10:35:27

Piping Echo

Time of First Successful Submission: 2026-04-05 01:02:13

Piping Stdout

Time of First Successful Submission: 2026-04-05 01:03:00

Piping Stdin

Time of First Successful Submission: 2026-04-05 03:41:03


The Art of the Shell

12 / 55 89 / 510


The Transient Path

Time of First Successful Submission: 2026-04-26 21:43:04

Ferocious Functionality

Time of First Successful Submission: 2026-04-26 22:04:31

The Surprising Swap

Time of First Successful Submission: 2026-04-27 04:05:47

Path of the Unquoted

Time of First Successful Submission: 2026-04-27 04:33:54

Globbing Harmony

Time of First Successful Submission: 2026-04-27 20:12:34

Zen of Expansion

Time of First Successful Submission: 2026-04-27 22:18:48

Way of the Wildcard

Time of First Successful Submission: 2026-04-27 22:30:05

Saga of the Sneaky Similarity

Time of First Successful Submission: 2026-04-27 22:49:24

Enigma of the Environment

Time of First Successful Submission: 2026-05-01 07:26:49

Voyage of the Variable

Time of First Successful Submission: 2026-05-01 08:31:35

Dance of the Delimiters

Time of First Successful Submission: 2026-05-01 09:23:45

Symphony of Separation

Time of First Successful Submission: 2026-05-01 10:33:37


Start Here

12 / 12 1998 / 44758


Using the Terminal

Time of First Successful Submission: 2026-04-03 06:27:53

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-03 06:36:21

Using the GUI Desktop

Time of First Successful Submission: 2026-04-03 06:41:05

Pasting into the Desktop

Time of First Successful Submission: 2026-04-03 06:43:45

Restarting Challenges

Time of First Successful Submission: 2026-04-03 12:55:39

Challenge Programs

Time of First Successful Submission: 2026-04-03 13:00:22

The Flag File

Time of First Successful Submission: 2026-04-03 13:02:07

Using Privileged Mode

Time of First Successful Submission: 2026-04-03 13:49:27

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-03 14:19:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-03 14:27:28


Linux Luminarium

128 / 128 2740 / 33513


Intro to Commands

Time of First Successful Submission: 2026-04-03 14:31:03

Intro to Arguments

Time of First Successful Submission: 2026-04-03 14:31:31

Command History

Time of First Successful Submission: 2026-04-03 14:32:03

The Root

Time of First Successful Submission: 2026-04-03 14:33:37

Program and absolute paths

Time of First Successful Submission: 2026-04-03 14:39:01

Position thy self

Time of First Successful Submission: 2026-04-03 14:39:56

Position elsewhere

Time of First Successful Submission: 2026-04-04 09:29:57

implicit relative paths, from /

Time of First Successful Submission: 2026-04-04 09:40:43

explicit relative paths, from /

Time of First Successful Submission: 2026-04-04 09:42:43

implicit relative path

Time of First Successful Submission: 2026-04-04 09:45:21

home sweet home

Time of First Successful Submission: 2026-04-04 09:47:45

cat: not the pet, but the command!

Time of First Successful Submission: 2026-04-04 09:48:37

catting absolute paths

Time of First Successful Submission: 2026-04-04 09:49:04

more catting practice

Time of First Successful Submission: 2026-04-04 09:49:54

grepping for a needle in a haystack

Time of First Successful Submission: 2026-04-04 09:50:28

comparing files

Time of First Successful Submission: 2026-04-04 09:53:03

listing files

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

touching files

Time of First Successful Submission: 2026-04-04 09:54:57

removing files

Time of First Successful Submission: 2026-04-04 09:57:10

moving files

Time of First Successful Submission: 2026-04-04 09:58:04

copying files

Time of First Successful Submission: 2026-04-04 09:58:37

hidden files

Time of First Successful Submission: 2026-04-04 10:00:00

An Epic Filesystem Quest

Time of First Successful Submission: 2026-04-04 10:06:19

making directories

Time of First Successful Submission: 2026-04-04 10:06:59

finding files

Time of First Successful Submission: 2026-04-04 10:35:27

linking files

Time of First Successful Submission: 2026-04-04 10:42:00

Learning From Documentation

Time of First Successful Submission: 2026-04-04 22:42:38

Learning Complex Usage

Time of First Successful Submission: 2026-04-04 22:47:16

Reading Manuals

Time of First Successful Submission: 2026-04-04 22:49:09

Searching Manuals

Time of First Successful Submission: 2026-04-04 22:51:55

Searching For Manuals

Time of First Successful Submission: 2026-04-04 23:20:46

Helpful Programs

Time of First Successful Submission: 2026-04-04 23:21:39

Help for Builtins

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

Matching with *

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Matching with ?

Time of First Successful Submission: 2026-04-04 23:30:49

Matching with []

Time of First Successful Submission: 2026-04-04 23:36:54

Matching paths with []

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

Multiple globs

Time of First Successful Submission: 2026-04-04 23:44:05

Mixing globs

Time of First Successful Submission: 2026-04-05 00:54:11

Exclusionary globbing

Time of First Successful Submission: 2026-04-05 00:55:29

Tab completion

Time of First Successful Submission: 2026-04-05 00:57:41

Multiple options for tab completion

Time of First Successful Submission: 2026-04-05 00:59:31

Tab completion on commands

Time of First Successful Submission: 2026-04-05 00:59:58

Redirecting output

Time of First Successful Submission: 2026-04-05 01:02:13

Redirecting more output

Time of First Successful Submission: 2026-04-05 01:03:00

Appending output

Time of First Successful Submission: 2026-04-05 01:25:23

Redirecting errors

Time of First Successful Submission: 2026-04-07 19:56:07

Redirecting input

Time of First Successful Submission: 2026-04-05 03:41:03

Grepping stored results

Time of First Successful Submission: 2026-04-05 03:42:24

Grepping live output

Time of First Successful Submission: 2026-04-05 03:44:00

Grepping errors

Time of First Successful Submission: 2026-04-05 03:45:42

Filtering with grep -v

Time of First Successful Submission: 2026-04-05 03:46:46

Filtering with sed

Time of First Successful Submission: 2026-04-05 03:48:24

Duplicating piped data with tee

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

Process substitution for input

Time of First Successful Submission: 2026-04-05 04:38:40

Writing to multiple programs

Time of First Successful Submission: 2026-04-05 04:49:26

Split-piping stderr and stdout

Time of First Successful Submission: 2026-04-07 19:41:01

Named pipes

Time of First Successful Submission: 2026-04-07 19:47:38

Printing Variables

Time of First Successful Submission: 2026-04-07 19:59:07

Setting Variables

Time of First Successful Submission: 2026-04-07 20:01:09

Multi-word Variables

Time of First Successful Submission: 2026-04-07 20:02:17

Exporting Variables

Time of First Successful Submission: 2026-04-07 20:11:10

Printing Exported Variables

Time of First Successful Submission: 2026-04-07 20:11:55

Storing Command Output

Time of First Successful Submission: 2026-04-07 20:13:22

Reading Input

Time of First Successful Submission: 2026-04-07 20:15:03

Reading Files

Time of First Successful Submission: 2026-04-07 20:17:24

Translating characters

Time of First Successful Submission: 2026-04-07 20:58:15

Deleting characters

Time of First Successful Submission: 2026-04-07 21:22:19

Deleting newlines

Time of First Successful Submission: 2026-04-07 21:30:20

Extracting the first lines with head

Time of First Successful Submission: 2026-04-07 21:34:01

Extracting specific sections of text

Time of First Successful Submission: 2026-04-07 21:40:29

Sorting data

Time of First Successful Submission: 2026-04-07 21:47:43

Listing Processes

Time of First Successful Submission: 2026-04-07 21:50:43

Killing Processes

Time of First Successful Submission: 2026-04-07 21:52:08

Interrupting Processes

Time of First Successful Submission: 2026-04-07 21:52:48

Killing Misbehaving Processes

Time of First Successful Submission: 2026-04-07 21:55:36

Suspending Processes

Time of First Successful Submission: 2026-04-07 21:56:25

Resuming Processes

Time of First Successful Submission: 2026-04-07 21:57:42

Backgrounding Processes

Time of First Successful Submission: 2026-04-07 22:09:47

Foregrounding Processes

Time of First Successful Submission: 2026-04-07 22:10:54

Starting Backgrounded Processes

Time of First Successful Submission: 2026-04-07 22:11:26

Process Exit Codes

Time of First Successful Submission: 2026-04-07 22:17:02

Becoming root with su

Time of First Successful Submission: 2026-04-07 22:33:35

Other users with su

Time of First Successful Submission: 2026-04-07 22:34:25

Cracking passwords

Time of First Successful Submission: 2026-04-07 22:42:34

Using sudo

Time of First Successful Submission: 2026-04-07 22:45:35

Changing File Ownership

Time of First Successful Submission: 2026-04-08 12:58:40

Groups and Files

Time of First Successful Submission: 2026-04-08 12:59:41

Fun With Groups Names

Time of First Successful Submission: 2026-04-08 13:00:42

Changing Permissions

Time of First Successful Submission: 2026-04-08 13:06:02

Executable Files

Time of First Successful Submission: 2026-04-08 13:06:38

Permission Tweaking Practice

Time of First Successful Submission: 2026-04-08 13:14:58

Permissions Setting Practice

Time of First Successful Submission: 2026-04-08 15:47:55

The SUID Bit

Time of First Successful Submission: 2026-04-08 15:51:21

Chaining with Semicolons

Time of First Successful Submission: 2026-04-08 15:53:41

Building on Success

Time of First Successful Submission: 2026-04-08 15:54:16

Handling Failure

Time of First Successful Submission: 2026-04-08 15:54:49

Your First Shell Script

Time of First Successful Submission: 2026-04-08 15:56:57

Redirecting Script Output

Time of First Successful Submission: 2026-04-08 17:22:42

Executable Shell Scripts

Time of First Successful Submission: 2026-04-08 17:24:07

Understanding Shebangs

Time of First Successful Submission: 2026-04-08 17:25:23

Scripting with Arguments

Time of First Successful Submission: 2026-04-08 17:27:05

Scripting with Conditionals

Time of First Successful Submission: 2026-04-08 17:30:01

Scripting with Default Cases

Time of First Successful Submission: 2026-04-08 17:30:56

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-04-08 17:33:14

Reading Shell Scripts

Time of First Successful Submission: 2026-04-08 17:40:50

Launching Screen

Time of First Successful Submission: 2026-04-08 17:41:43

Detaching and Attaching

Time of First Successful Submission: 2026-04-08 17:43:10

Finding Sessions

Time of First Successful Submission: 2026-04-08 17:44:53

Switching Windows

Time of First Successful Submission: 2026-04-08 17:46:36

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-04-08 17:47:45

Switching Windows (tmux)

Time of First Successful Submission: 2026-04-08 17:48:38

The PATH Variable

Time of First Successful Submission: 2026-04-08 17:50:10

Setting PATH

Time of First Successful Submission: 2026-04-08 17:51:14

Finding Commands

Time of First Successful Submission: 2026-04-08 17:52:27

Adding Commands

Time of First Successful Submission: 2026-04-08 18:13:06

Hijacking Commands

Time of First Successful Submission: 2026-04-08 18:20:52

Bashrc Backdoor

Time of First Successful Submission: 2026-04-08 18:23:50

Sniffing Input

Time of First Successful Submission: 2026-04-10 00:13:51

Overshared Directories

Time of First Successful Submission: 2026-04-10 00:20:48

Tricky Linking

Time of First Successful Submission: 2026-04-10 00:43:43

Sniffing Process Arguments

Time of First Successful Submission: 2026-04-10 00:47:03

Snooping on Configurations

Time of First Successful Submission: 2026-04-10 00:48:53

The Fork Bomb

Time of First Successful Submission: 2026-04-10 01:01:55

Disk-Space Doomsday

Time of First Successful Submission: 2026-04-10 01:05:03

rm -rf /

Time of First Successful Submission: 2026-04-10 01:07:30

Life after rm -rf /

Time of First Successful Submission: 2026-04-10 01:13:20

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-04-10 01:15:42


Computing 101

74 / 94 1079 / 22127


Your First Register

Time of First Successful Submission: 2026-04-12 01:43:02

Your First Syscall

Time of First Successful Submission: 2026-04-12 01:46:29

Exit Codes

Time of First Successful Submission: 2026-04-12 01:48:26

Building Executables

Time of First Successful Submission: 2026-04-12 01:56:22

Moving Between Registers

Time of First Successful Submission: 2026-04-12 01:57:53

Loading From Memory

Time of First Successful Submission: 2026-04-13 22:17:44

More Loading Practice

Time of First Successful Submission: 2026-04-13 22:20:25

Dereferencing Pointers

Time of First Successful Submission: 2026-04-13 22:27:33

Dereferencing Yourself

Time of First Successful Submission: 2026-04-13 22:28:42

Dereferencing with Offsets

Time of First Successful Submission: 2026-04-13 22:33:29

Stored Addresses

Time of First Successful Submission: 2026-04-13 22:36:42

Double Dereference

Time of First Successful Submission: 2026-04-13 22:43:30

The Stack

Time of First Successful Submission: 2026-04-13 22:51:06

Stack Offsets

Time of First Successful Submission: 2026-04-13 22:53:41

Program Arguments on the Stack

Time of First Successful Submission: 2026-04-13 22:55:49

Popping From the Stack

Time of First Successful Submission: 2026-04-13 22:58:34

Disassembling Programs

Time of First Successful Submission: 2026-04-13 23:11:53

Tracing Syscalls

Time of First Successful Submission: 2026-04-13 23:21:25

Starting GDB

Time of First Successful Submission: 2026-04-13 23:22:22

Quitting GDB

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

Starting Programs in GDB

Time of First Successful Submission: 2026-04-13 23:26:20

Disassembling in GDB

Time of First Successful Submission: 2026-04-13 23:29:45

Stepping Through Instructions

Time of First Successful Submission: 2026-04-13 23:31:41

Reading Register Values

Time of First Successful Submission: 2026-04-13 23:33:13

Popping Stack Values

Time of First Successful Submission: 2026-04-13 23:35:04

Examining Memory

Time of First Successful Submission: 2026-04-13 23:36:36

Examining Stack Pointers

Time of First Successful Submission: 2026-04-13 23:38:42

Cooperative Debugging

Time of First Successful Submission: 2026-04-13 23:43:22

Writing Output

Time of First Successful Submission: 2026-04-14 00:51:28

Chaining Syscalls

Time of First Successful Submission: 2026-04-14 00:54:46

Writing Strings

Time of First Successful Submission: 2026-04-14 00:55:40

Reading Data

Time of First Successful Submission: 2026-04-14 12:01:52

Opening Files

Time of First Successful Submission: 2026-04-14 12:34:08

Hardcoding the Filename

Time of First Successful Submission: 2026-04-14 13:38:22

Comparing Values

Time of First Successful Submission: 2026-04-14 13:58:33

Comparing Characters

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

Conditional Control Flow

Time of First Successful Submission: 2026-04-14 14:20:39

Comparing Strings

Time of First Successful Submission: 2026-04-14 14:33:41

Reverse the Password

Time of First Successful Submission: 2026-04-14 14:42:43

Conditionals Without Conditionals

Time of First Successful Submission: 2026-04-16 00:18:10

Looping

Time of First Successful Submission: 2026-04-16 00:23:44

Reverse the Calculation

Time of First Successful Submission: 2026-04-16 00:29:14

Reverse the Reverse

Time of First Successful Submission: 2026-04-16 00:30:22

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-04-16 00:34:39

Loops on Data

Time of First Successful Submission: 2026-04-16 00:36:12

set-register

Time of First Successful Submission: 2026-04-16 00:45:52

set-multiple-registers

Time of First Successful Submission: 2026-04-16 05:54:37

add-to-register

Time of First Successful Submission: 2026-04-16 06:01:48

linear-equation-registers

Time of First Successful Submission: 2026-04-16 06:05:21

integer-division

Time of First Successful Submission: 2026-04-16 19:18:32

modulo-operation

Time of First Successful Submission: 2026-04-16 20:17:59

set-upper-byte

Time of First Successful Submission: 2026-04-16 20:19:42

efficient-modulo

Time of First Successful Submission: 2026-04-16 20:43:51

byte-extraction

Time of First Successful Submission: 2026-04-16 21:00:38

bitwise-and

Time of First Successful Submission: 2026-04-16 23:16:44

check-even

Time of First Successful Submission: 2026-04-17 02:23:44

memory-read

Time of First Successful Submission: 2026-04-17 02:28:57

memory-write

Time of First Successful Submission: 2026-04-17 02:34:18

memory-increment

Time of First Successful Submission: 2026-04-17 04:45:18

byte-access

Time of First Successful Submission: 2026-04-17 04:49:12

memory-size-access

Time of First Successful Submission: 2026-04-17 04:52:14

little-endian-write

Time of First Successful Submission: 2026-04-17 21:14:02

memory-sum

Time of First Successful Submission: 2026-04-17 21:35:43

stack-subtraction

Time of First Successful Submission: 2026-04-17 21:40:10

swap-stack-values

Time of First Successful Submission: 2026-04-17 21:43:02

average-stack-values

Time of First Successful Submission: 2026-04-17 21:48:03

absolute-jump

Time of First Successful Submission: 2026-04-17 21:52:45

relative-jump

Time of First Successful Submission: 2026-04-17 22:17:40

jump-trampoline

Time of First Successful Submission: 2026-04-18 10:11:19

conditional-jump

Time of First Successful Submission: 2026-04-18 11:08:06

indirect-jump

Time of First Successful Submission: 2026-04-18 12:57:56

average-loop

Time of First Successful Submission: 2026-04-18 14:15:54

count-non-zero

Time of First Successful Submission: 2026-04-19 09:03:03

string-lower

Time of First Successful Submission: 2026-04-19 21:16:17


Arizona CTF 2025

2 / 23 247 / 782


Hijack Me!

Time of First Successful Submission: 2026-04-26 21:43:04

Expand Your Mind

Time of First Successful Submission: 2026-04-27 22:49:24


GCA CTF

12 / 104 2245 / 45039


Using the Terminal

Time of First Successful Submission: 2026-04-03 06:27:53

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-03 06:36:21

Using the GUI Desktop

Time of First Successful Submission: 2026-04-03 06:41:05

Pasting into the Desktop

Time of First Successful Submission: 2026-04-03 06:43:45

Connecting over SSH

Time of First Successful Submission: 2026-04-03 12:52:05

Restarting Challenges

Time of First Successful Submission: 2026-04-03 12:55:39

Getting Help

Time of First Successful Submission: 2026-04-03 12:58:53

Challenge Programs

Time of First Successful Submission: 2026-04-03 13:00:22

The Flag File

Time of First Successful Submission: 2026-04-03 13:02:07

Using Privileged Mode

Time of First Successful Submission: 2026-04-03 13:49:27

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-03 14:19:02

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-03 14:27:28