j7sd4_x86

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-17 22:34:54

Command Arguments

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Command History

Time of First Successful Submission: 2026-01-17 22:35:49

The Root Path

Time of First Successful Submission: 2026-01-17 22:36:25

Absolute Paths

Time of First Successful Submission: 2026-01-17 22:36:56

Changing position

Time of First Successful Submission: 2026-01-17 22:37:27

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-17 22:38:32

Relative Paths

Time of First Successful Submission: 2026-01-17 22:40:14

Cat

Time of First Successful Submission: 2026-01-17 22:45:07

Ls

Time of First Successful Submission: 2026-01-17 22:51:55

Ls All

Time of First Successful Submission: 2026-01-17 22:55:08

Find

Time of First Successful Submission: 2026-01-17 23:04:05

Piping Echo

Time of First Successful Submission: 2026-01-18 15:35:54

Piping Stdout

Time of First Successful Submission: 2026-01-18 15:37:11

Piping Stdin

Time of First Successful Submission: 2026-01-18 15:40:11


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-17 22:05:27

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-17 22:06:34

Using the GUI Desktop

Time of First Successful Submission: 2026-01-17 22:08:21

Pasting into the Desktop

Time of First Successful Submission: 2026-01-17 22:09:12

Restarting Challenges

Time of First Successful Submission: 2026-01-17 22:16:18

Challenge Programs

Time of First Successful Submission: 2026-01-17 22:18:15

The Flag File

Time of First Successful Submission: 2026-01-17 22:18:47

Using Privileged Mode

Time of First Successful Submission: 2026-01-17 22:20:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-17 22:21:17

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-17 22:21:37


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-17 22:34:54

Intro to Arguments

Time of First Successful Submission: 2026-01-17 22:35:26

Command History

Time of First Successful Submission: 2026-01-17 22:35:49

The Root

Time of First Successful Submission: 2026-01-17 22:36:25

Program and absolute paths

Time of First Successful Submission: 2026-01-17 22:36:56

Position thy self

Time of First Successful Submission: 2026-01-17 22:37:27

Position elsewhere

Time of First Successful Submission: 2026-01-17 22:38:32

implicit relative paths, from /

Time of First Successful Submission: 2026-01-17 22:40:14

explicit relative paths, from /

Time of First Successful Submission: 2026-01-17 22:40:48

implicit relative path

Time of First Successful Submission: 2026-01-17 22:41:11

home sweet home

Time of First Successful Submission: 2026-01-17 22:44:11

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-17 22:45:07

catting absolute paths

Time of First Successful Submission: 2026-01-17 22:45:43

more catting practice

Time of First Successful Submission: 2026-01-17 22:50:22

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-17 22:50:54

comparing files

Time of First Successful Submission: 2026-01-17 22:51:28

listing files

Time of First Successful Submission: 2026-01-17 22:51:55

touching files

Time of First Successful Submission: 2026-01-17 22:52:21

removing files

Time of First Successful Submission: 2026-01-17 22:52:46

moving files

Time of First Successful Submission: 2026-01-17 22:53:28

copying files

Time of First Successful Submission: 2026-01-17 22:54:08

hidden files

Time of First Successful Submission: 2026-01-17 22:55:08

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-17 23:00:19

making directories

Time of First Successful Submission: 2026-01-17 23:01:03

finding files

Time of First Successful Submission: 2026-01-17 23:04:05

linking files

Time of First Successful Submission: 2026-01-17 23:05:12

Learning From Documentation

Time of First Successful Submission: 2026-01-17 23:12:07

Learning Complex Usage

Time of First Successful Submission: 2026-01-17 23:12:44

Reading Manuals

Time of First Successful Submission: 2026-01-17 23:13:35

Searching Manuals

Time of First Successful Submission: 2026-01-17 23:14:47

Searching For Manuals

Time of First Successful Submission: 2026-01-17 23:16:41

Helpful Programs

Time of First Successful Submission: 2026-01-17 23:17:50

Help for Builtins

Time of First Successful Submission: 2026-01-17 23:18:43

Matching with *

Time of First Successful Submission: 2026-01-18 15:21:49

Matching with ?

Time of First Successful Submission: 2026-01-18 15:22:58

Matching with []

Time of First Successful Submission: 2026-01-18 15:24:20

Matching paths with []

Time of First Successful Submission: 2026-01-18 15:25:20

Multiple globs

Time of First Successful Submission: 2026-01-18 15:26:42

Mixing globs

Time of First Successful Submission: 2026-01-18 15:31:24

Exclusionary globbing

Time of First Successful Submission: 2026-01-18 15:33:33

Tab completion

Time of First Successful Submission: 2026-01-18 15:33:56

Multiple options for tab completion

Time of First Successful Submission: 2026-01-18 15:34:39

Tab completion on commands

Time of First Successful Submission: 2026-01-18 15:35:02

Redirecting output

Time of First Successful Submission: 2026-01-18 15:35:54

Redirecting more output

Time of First Successful Submission: 2026-01-18 15:37:11

Appending output

Time of First Successful Submission: 2026-01-18 15:38:30

Redirecting errors

Time of First Successful Submission: 2026-01-18 15:39:21

Redirecting input

Time of First Successful Submission: 2026-01-18 15:40:11

Grepping stored results

Time of First Successful Submission: 2026-01-18 15:40:40

Grepping live output

Time of First Successful Submission: 2026-01-18 15:41:04

Grepping errors

Time of First Successful Submission: 2026-01-18 15:42:32

Filtering with grep -v

Time of First Successful Submission: 2026-01-18 15:43:00

Filtering with sed

Time of First Successful Submission: 2026-01-18 15:44:03

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-18 15:45:31

Process substitution for input

Time of First Successful Submission: 2026-01-18 15:46:27

Writing to multiple programs

Time of First Successful Submission: 2026-01-18 15:58:22

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-18 16:07:44

Named pipes

Time of First Successful Submission: 2026-01-18 16:09:52

Printing Variables

Time of First Successful Submission: 2026-01-18 16:10:36

Setting Variables

Time of First Successful Submission: 2026-01-18 16:10:58

Multi-word Variables

Time of First Successful Submission: 2026-01-18 16:11:23

Exporting Variables

Time of First Successful Submission: 2026-01-18 16:13:20

Printing Exported Variables

Time of First Successful Submission: 2026-01-18 16:13:38

Storing Command Output

Time of First Successful Submission: 2026-01-18 16:14:14

Reading Input

Time of First Successful Submission: 2026-01-18 16:14:50

Reading Files

Time of First Successful Submission: 2026-01-18 16:18:36

Translating characters

Time of First Successful Submission: 2026-01-18 16:23:11

Deleting characters

Time of First Successful Submission: 2026-01-18 16:24:01

Deleting newlines

Time of First Successful Submission: 2026-01-18 16:24:56

Extracting the first lines with head

Time of First Successful Submission: 2026-01-18 16:26:23

Extracting specific sections of text

Time of First Successful Submission: 2026-01-18 16:27:02

Sorting data

Time of First Successful Submission: 2026-01-18 16:27:57

Listing Processes

Time of First Successful Submission: 2026-01-18 16:29:20

Killing Processes

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Interrupting Processes

Time of First Successful Submission: 2026-01-18 17:03:04

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

Time of First Successful Submission: 2026-01-18 17:09:40

Process Exit Codes

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Becoming root with su

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Other users with su

Time of First Successful Submission: 2026-01-18 17:11:33

Cracking passwords

Time of First Successful Submission: 2026-01-18 17:14:24

Using sudo

Time of First Successful Submission: 2026-01-18 17:15:19

Changing File Ownership

Time of First Successful Submission: 2026-01-18 17:16:37

Groups and Files

Time of First Successful Submission: 2026-01-18 17:17:15

Fun With Groups Names

Time of First Successful Submission: 2026-01-18 17:18:00

Changing Permissions

Time of First Successful Submission: 2026-01-18 17:18:37

Executable Files

Time of First Successful Submission: 2026-01-18 17:19:04

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-18 17:23:07

Permissions Setting Practice

Time of First Successful Submission: 2026-01-18 17:35:29

The SUID Bit

Time of First Successful Submission: 2026-01-18 17:36:03

Chaining with Semicolons

Time of First Successful Submission: 2026-01-18 17:36:37

Building on Success

Time of First Successful Submission: 2026-01-18 17:36:56

Handling Failure

Time of First Successful Submission: 2026-01-18 17:37:16

Your First Shell Script

Time of First Successful Submission: 2026-01-18 17:38:19

Redirecting Script Output

Time of First Successful Submission: 2026-01-18 17:38:57

Executable Shell Scripts

Time of First Successful Submission: 2026-01-18 17:39:51

Understanding Shebangs

Time of First Successful Submission: 2026-01-18 17:41:04

Scripting with Arguments

Time of First Successful Submission: 2026-01-18 17:43:42

Scripting with Conditionals

Time of First Successful Submission: 2026-01-18 17:44:52

Scripting with Default Cases

Time of First Successful Submission: 2026-01-18 17:45:39

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-18 17:49:44

Reading Shell Scripts

Time of First Successful Submission: 2026-01-18 17:50:31

Launching Screen

Time of First Successful Submission: 2026-01-18 17:51:06

Detaching and Attaching

Time of First Successful Submission: 2026-01-18 17:51:37

Finding Sessions

Time of First Successful Submission: 2026-01-18 17:52:53

Switching Windows

Time of First Successful Submission: 2026-01-18 17:53:23

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-18 17:53:50

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-18 17:54:11

The PATH Variable

Time of First Successful Submission: 2026-01-18 17:54:59

Setting PATH

Time of First Successful Submission: 2026-01-18 17:55:37

Finding Commands

Time of First Successful Submission: 2026-01-18 17:57:39

Adding Commands

Time of First Successful Submission: 2026-01-18 18:00:34

Hijacking Commands

Time of First Successful Submission: 2026-01-18 18:02:19

Bashrc Backdoor

Time of First Successful Submission: 2026-01-18 18:03:50

Sniffing Input

Time of First Successful Submission: 2026-01-18 18:08:04

Overshared Directories

Time of First Successful Submission: 2026-01-19 16:14:24

Tricky Linking

Time of First Successful Submission: 2026-01-19 16:28:30

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-19 16:30:04

Snooping on Configurations

Time of First Successful Submission: 2026-01-19 16:32:43

The Fork Bomb

Time of First Successful Submission: 2026-01-19 16:36:43

Disk-Space Doomsday

Time of First Successful Submission: 2026-01-19 16:38:34

rm -rf /

Time of First Successful Submission: 2026-01-19 16:41:08

Life after rm -rf /

Time of First Successful Submission: 2026-01-19 16:47:32

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-19 16:53:19


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-01-17 22:05:27

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-17 22:06:34

Using the GUI Desktop

Time of First Successful Submission: 2026-01-17 22:08:21

Pasting into the Desktop

Time of First Successful Submission: 2026-01-17 22:09:12

Connecting over SSH

Time of First Successful Submission: 2026-01-17 22:13:46

Restarting Challenges

Time of First Successful Submission: 2026-01-17 22:16:18

Getting Help

Time of First Successful Submission: 2026-01-17 22:17:40

Challenge Programs

Time of First Successful Submission: 2026-01-17 22:18:15

The Flag File

Time of First Successful Submission: 2026-01-17 22:18:47

Using Privileged Mode

Time of First Successful Submission: 2026-01-17 22:20:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-01-17 22:21:17

Persistent Home Directories - Two

Time of First Successful Submission: 2026-01-17 22:21:37