browserthe2nd

Intro to Programming Languages

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Commands

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Command Arguments

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Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

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Cat

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Ls

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Ls All

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Find

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Piping Echo

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Piping Stdout

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Piping Stdin

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Start Here

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Using the Terminal

Time of First Successful Submission: 2026-05-02 21:52:34

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-02 21:54:50

Using the GUI Desktop

Time of First Successful Submission: 2026-05-02 21:56:27

Pasting into the Desktop

Time of First Successful Submission: 2026-05-02 21:59:19

Restarting Challenges

Time of First Successful Submission: 2026-05-02 22:06:23

Challenge Programs

Time of First Successful Submission: 2026-05-03 08:12:51

The Flag File

Time of First Successful Submission: 2026-05-03 08:16:03

Using Privileged Mode

Time of First Successful Submission: 2026-05-03 08:34:03

Persistent Home Directories - One

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Persistent Home Directories - Two

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Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-05-03 09:31:41

Intro to Arguments

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Command History

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The Root

Time of First Successful Submission: 2026-05-03 09:35:37

Program and absolute paths

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Position thy self

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Position elsewhere

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implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

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home sweet home

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cat: not the pet, but the command!

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catting absolute paths

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more catting practice

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grepping for a needle in a haystack

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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: 2026-05-03 10:06:35

An Epic Filesystem Quest

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

making directories

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finding files

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linking files

Time of First Successful Submission: 2026-05-04 19:43:50

Learning From Documentation

Time of First Successful Submission: 2026-05-03 15:31:21

Learning Complex Usage

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Reading Manuals

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Searching Manuals

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Searching For Manuals

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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

Time of First Successful Submission: 2026-05-05 21:19:55

Redirecting more output

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

Appending output

Time of First Successful Submission: 2026-05-05 21:23:17

Redirecting errors

Time of First Successful Submission: 2026-05-05 21:25:03

Redirecting input

Time of First Successful Submission: 2026-05-05 21:26:19

Grepping stored results

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

Grepping live output

Time of First Successful Submission: 2026-05-05 21:29:43

Grepping errors

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Filtering with grep -v

Time of First Successful Submission: 2026-05-06 17:23:14

Filtering with sed

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Duplicating piped data with tee

Time of First Successful Submission: 2026-05-06 20:09:19

Process substitution for input

Time of First Successful Submission: 2026-05-06 17:55:23

Writing to multiple programs

Time of First Successful Submission: 2026-05-06 18:02:41

Split-piping stderr and stdout

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Named pipes

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Printing Variables

Time of First Successful Submission: 2026-05-06 20:22:08

Setting Variables

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Multi-word Variables

Time of First Successful Submission: 2026-05-06 20:24:23

Exporting Variables

Time of First Successful Submission: 2026-05-06 20:26:24

Printing Exported Variables

Time of First Successful Submission: 2026-05-06 20:27:29

Storing Command Output

Time of First Successful Submission: 2026-05-06 20:28:38

Reading Input

Time of First Successful Submission: 2026-05-06 20:32:21

Reading Files

Time of First Successful Submission: 2026-05-06 20:34:48

Translating characters

Time of First Successful Submission: 2026-05-07 14:47:34

Deleting characters

Time of First Successful Submission: 2026-05-07 14:48:38

Deleting newlines

Time of First Successful Submission: 2026-05-07 14:50:56

Extracting the first lines with head

Time of First Successful Submission: 2026-05-07 14:52:19

Extracting specific sections of text

Time of First Successful Submission: 2026-05-07 14:54:00

Sorting data

Time of First Successful Submission: 2026-05-07 14:56:59

Listing Processes

Time of First Successful Submission: 2026-05-11 21:45:52

Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

Time of First Successful Submission: 2026-05-11 22:16:58

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

Time of First Successful Submission: 2026-05-11 22:10:43

Process Exit Codes

Time of First Successful Submission: 2026-05-11 22:12:01

Becoming root with su

Time of First Successful Submission: 2026-05-12 21:47:28

Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-05-12 21:53:33

Using sudo

Time of First Successful Submission: 2026-05-12 21:56:01

Changing File Ownership

Time of First Successful Submission: 2026-05-13 16:52:09

Groups and Files

Time of First Successful Submission: 2026-05-13 16:57:17

Fun With Groups Names

Time of First Successful Submission: 2026-05-13 16:58:14

Changing Permissions

Time of First Successful Submission: 2026-05-13 17:06:07

Executable Files

Time of First Successful Submission: 2026-05-13 17:09:32

Permission Tweaking Practice

Time of First Successful Submission: 2026-05-13 17:13:58

Permissions Setting Practice

Time of First Successful Submission: 2026-05-13 17:27:11

The SUID Bit

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Chaining with Semicolons

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Building on Success

Time of First Successful Submission: 2026-05-13 17:33:05

Handling Failure

Time of First Successful Submission: 2026-05-13 17:34:12

Your First Shell Script

Time of First Successful Submission: 2026-05-13 20:23:12

Redirecting Script Output

Time of First Successful Submission: 2026-05-13 20:32:58

Executable Shell Scripts

Time of First Successful Submission: 2026-05-13 20:34:17

Understanding Shebangs

Time of First Successful Submission: 2026-05-13 20:39:26

Scripting with Arguments

Time of First Successful Submission: 2026-05-13 20:41:21

Scripting with Conditionals

Time of First Successful Submission: 2026-05-13 20:43:51

Scripting with Default Cases

Time of First Successful Submission: 2026-05-13 20:45:55

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-05-13 20:49:14

Reading Shell Scripts

Time of First Successful Submission: 2026-05-13 20:50:54

Computing 101

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Your First Register

Time of First Successful Submission: 2026-05-04 20:21:53

Your First Syscall

Time of First Successful Submission: 2026-05-05 11:08:05

Exit Codes

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

Building Executables

Time of First Successful Submission: 2026-05-05 14:59:08

Moving Between Registers

Time of First Successful Submission: 2026-05-05 15:03:29

Loading From Memory

Time of First Successful Submission: 2026-05-08 19:55:37

More Loading Practice

Time of First Successful Submission: 2026-05-08 19:57:40

Dereferencing Pointers

Time of First Successful Submission: 2026-05-08 20:01:11

Dereferencing Yourself

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Dereferencing with Offsets

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Stored Addresses

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Double Dereference

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The Stack

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Stack Offsets

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Program Arguments on the Stack

Time of First Successful Submission: 2026-05-08 20:19:11

Popping From the Stack

Time of First Successful Submission: 2026-05-08 20:21:24

Disassembling Programs

Time of First Successful Submission: 2026-05-08 22:18:26

Tracing Syscalls

Time of First Successful Submission: 2026-05-08 22:21:04

Starting GDB

Time of First Successful Submission: 2026-05-08 22:22:31

Quitting GDB

Time of First Successful Submission: 2026-05-08 22:22:58

Starting Programs in GDB

Time of First Successful Submission: 2026-05-08 22:25:40

Disassembling in GDB

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Stepping Through Instructions

Time of First Successful Submission: 2026-05-08 22:30:58

Reading Register Values

Time of First Successful Submission: 2026-05-08 22:33:11

Popping Stack Values

Time of First Successful Submission: 2026-05-08 22:34:50

Examining Memory

Time of First Successful Submission: 2026-05-08 22:36:49

Examining Stack Pointers

Time of First Successful Submission: 2026-05-08 22:40:14

Cooperative Debugging

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Writing Output

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

Chaining Syscalls

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Writing Strings

Time of First Successful Submission: 2026-05-09 15:08:44

Reading Data

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Opening Files

Time of First Successful Submission: 2026-05-09 15:23:31

Hardcoding the Filename

Time of First Successful Submission: 2026-05-09 15:32:17

Comparing Values

Time of First Successful Submission: 2026-05-10 17:42:33

Comparing Characters

Time of First Successful Submission: 2026-05-10 17:48:19

Conditional Control Flow

Time of First Successful Submission: 2026-05-10 17:58:52

Comparing Strings

Time of First Successful Submission: 2026-05-10 18:04:23

Reverse the Password

Time of First Successful Submission: 2026-05-10 18:08:11

Conditionals Without Conditionals

Time of First Successful Submission: 2026-05-10 18:22:42

Looping

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Reverse the Calculation

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Reverse the Reverse

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Dealing with Bitwise Operations

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Loops on Data

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set-register

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set-multiple-registers

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add-to-register

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linear-equation-registers

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integer-division

Time of First Successful Submission: 2026-05-15 16:27:32

modulo-operation

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set-upper-byte

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efficient-modulo

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byte-extraction

Time of First Successful Submission: 2026-05-17 20:01:40

bitwise-and

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check-even

Time of First Successful Submission: 2026-05-17 20:14:33

memory-read

Time of First Successful Submission: 2026-05-18 10:12:56

memory-write

Time of First Successful Submission: 2026-05-18 10:13:56

memory-increment

Time of First Successful Submission: 2026-05-18 10:17:33

byte-access

Time of First Successful Submission: 2026-05-18 10:20:41

memory-size-access

Time of First Successful Submission: 2026-05-18 10:24:57

little-endian-write

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memory-sum

Time of First Successful Submission: 2026-05-18 10:50:50

stack-subtraction

Time of First Successful Submission: 2026-05-18 10:52:42

swap-stack-values

Time of First Successful Submission: 2026-05-18 10:54:40

average-stack-values

Time of First Successful Submission: 2026-05-18 11:56:35

absolute-jump

Time of First Successful Submission: 2026-05-18 12:06:46

relative-jump

Time of First Successful Submission: 2026-05-18 17:21:46

jump-trampoline

Time of First Successful Submission: 2026-05-18 17:25:14

conditional-jump

Time of First Successful Submission: 2026-05-25 20:54:31

indirect-jump

Time of First Successful Submission: 2026-05-19 17:10:02

average-loop

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count-non-zero

Time of First Successful Submission: 2026-05-22 20:12:06

string-lower

Time of First Successful Submission: 2026-05-25 23:20:18

DSU Cyber Camps

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Using the Terminal

Time of First Successful Submission: 2026-05-02 21:52:34

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-02 21:54:50

Using the GUI Desktop

Time of First Successful Submission: 2026-05-02 21:56:27

Pasting into the Desktop

Time of First Successful Submission: 2026-05-02 21:59:19

Connecting over SSH

Time of First Successful Submission: 2026-05-02 22:01:36

Restarting Challenges

Time of First Successful Submission: 2026-05-02 22:06:23

Getting Help

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

Challenge Programs

Time of First Successful Submission: 2026-05-03 08:12:51

The Flag File

Time of First Successful Submission: 2026-05-03 08:16:03

Using Privileged Mode

Time of First Successful Submission: 2026-05-03 08:34:03

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-03 08:36:57

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-03 08:37:51

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-05-02 21:52:34

Using the VSCode Workspace

Time of First Successful Submission: 2026-05-02 21:54:50

Using the GUI Desktop

Time of First Successful Submission: 2026-05-02 21:56:27

Pasting into the Desktop

Time of First Successful Submission: 2026-05-02 21:59:19

Connecting over SSH

Time of First Successful Submission: 2026-05-02 22:01:36

Restarting Challenges

Time of First Successful Submission: 2026-05-02 22:06:23

Getting Help

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

Challenge Programs

Time of First Successful Submission: 2026-05-03 08:12:51

The Flag File

Time of First Successful Submission: 2026-05-03 08:16:03

Using Privileged Mode

Time of First Successful Submission: 2026-05-03 08:34:03

Persistent Home Directories - One

Time of First Successful Submission: 2026-05-03 08:36:57

Persistent Home Directories - Two

Time of First Successful Submission: 2026-05-03 08:37:51