hisui

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-09-21 08:21:38

Command Arguments

Time of First Successful Submission: 2025-09-21 08:25:26

Command History

Time of First Successful Submission: 2025-09-21 08:28:18

The Root Path

Time of First Successful Submission: 2025-12-04 01:31:37

Absolute Paths

Time of First Successful Submission: 2025-12-04 01:34:12

Changing position

Time of First Successful Submission: 2025-12-04 15:17:31

Changing to an Absolute Path

Time of First Successful Submission: 2025-12-05 10:08:16

Relative Paths

Time of First Successful Submission: 2025-12-05 10:20:40

Cat

Time of First Successful Submission: 2025-12-06 07:55:13

Ls

Time of First Successful Submission: 2025-12-06 08:18:12

Ls All

Time of First Successful Submission: 2025-12-06 08:34:50

Find

Time of First Successful Submission: 2025-12-06 09:55:16

Piping Echo

Time of First Successful Submission: 2025-12-09 15:02:23

Piping Stdout

Time of First Successful Submission: 2025-12-09 15:07:05

Piping Stdin

Time of First Successful Submission: 2025-12-09 15:35:58


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-09-21 07:07:15

Using the VSCode Workspace

Time of First Successful Submission: 2025-09-21 07:43:38

Using the GUI Desktop

Time of First Successful Submission: 2025-09-21 07:48:56

Pasting into the Desktop

Time of First Successful Submission: 2025-09-21 07:56:40

Restarting Challenges

Time of First Successful Submission: 2025-09-21 07:59:05

Challenge Programs

Time of First Successful Submission: 2025-09-22 12:32:54

The Flag File

Time of First Successful Submission: 2025-09-22 12:52:27

Using Privileged Mode

Time of First Successful Submission: 2025-12-03 09:07:50

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-03 09:45:42

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-03 10:13:00


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-09-21 08:21:38

Intro to Arguments

Time of First Successful Submission: 2025-09-21 08:25:26

Command History

Time of First Successful Submission: 2025-09-21 08:28:18

The Root

Time of First Successful Submission: 2025-12-04 01:31:37

Program and absolute paths

Time of First Successful Submission: 2025-12-04 01:34:12

Position thy self

Time of First Successful Submission: 2025-12-04 15:17:31

Position elsewhere

Time of First Successful Submission: 2025-12-05 10:08:16

implicit relative paths, from /

Time of First Successful Submission: 2025-12-05 10:20:40

explicit relative paths, from /

Time of First Successful Submission: 2025-12-05 14:22:52

implicit relative path

Time of First Successful Submission: 2025-12-05 14:26:41

home sweet home

Time of First Successful Submission: 2025-12-06 07:49:36

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-06 07:55:13

catting absolute paths

Time of First Successful Submission: 2025-12-06 07:57:11

more catting practice

Time of First Successful Submission: 2025-12-06 07:59:03

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-06 08:01:49

comparing files

Time of First Successful Submission: 2025-12-06 08:09:41

listing files

Time of First Successful Submission: 2025-12-06 08:18:12

touching files

Time of First Successful Submission: 2025-12-06 08:20:40

removing files

Time of First Successful Submission: 2025-12-06 08:24:36

moving files

Time of First Successful Submission: 2025-12-06 08:28:53

copying files

Time of First Successful Submission: 2025-12-06 08:31:41

hidden files

Time of First Successful Submission: 2025-12-06 08:34:50

An Epic Filesystem Quest

Time of First Successful Submission: 2025-12-06 09:21:44

making directories

Time of First Successful Submission: 2025-12-06 09:26:45

finding files

Time of First Successful Submission: 2025-12-06 09:55:16

linking files

Time of First Successful Submission: 2025-12-06 10:36:41

Learning From Documentation

Time of First Successful Submission: 2025-12-06 13:44:01

Learning Complex Usage

Time of First Successful Submission: 2025-12-06 14:07:20

Reading Manuals

Time of First Successful Submission: 2025-12-06 15:15:53

Searching Manuals

Time of First Successful Submission: 2025-12-06 15:23:13

Searching For Manuals

Time of First Successful Submission: 2025-12-06 16:00:34

Helpful Programs

Time of First Successful Submission: 2025-12-06 16:18:53

Help for Builtins

Time of First Successful Submission: 2025-12-06 16:22:01

Matching with *

Time of First Successful Submission: 2025-12-06 16:45:34

Matching with ?

Time of First Successful Submission: 2025-12-06 16:49:59

Matching with []

Time of First Successful Submission: 2025-12-06 16:58:17

Matching paths with []

Time of First Successful Submission: 2025-12-06 17:25:22

Multiple globs

Time of First Successful Submission: 2025-12-07 03:13:30

Mixing globs

Time of First Successful Submission: 2025-12-07 03:38:43

Exclusionary globbing

Time of First Successful Submission: 2025-12-07 03:45:12

Tab completion

Time of First Successful Submission: 2025-12-07 03:50:30

Multiple options for tab completion

Time of First Successful Submission: 2025-12-07 04:00:57

Tab completion on commands

Time of First Successful Submission: 2025-12-07 04:01:59

Redirecting output

Time of First Successful Submission: 2025-12-09 15:02:23

Redirecting more output

Time of First Successful Submission: 2025-12-09 15:07:05

Appending output

Time of First Successful Submission: 2025-12-09 15:17:49

Redirecting errors

Time of First Successful Submission: 2025-12-09 15:24:59

Redirecting input

Time of First Successful Submission: 2025-12-09 15:35:58

Grepping stored results

Time of First Successful Submission: 2025-12-09 15:40:41

Grepping live output

Time of First Successful Submission: 2025-12-16 13:54:37

Grepping errors

Time of First Successful Submission: 2026-02-11 08:31:03

Filtering with grep -v

Time of First Successful Submission: 2026-02-11 08:34:51

Filtering with sed

Time of First Successful Submission: 2026-02-11 08:38:37

Duplicating piped data with tee

Time of First Successful Submission: 2026-02-11 09:07:33

Process substitution for input

Time of First Successful Submission: 2026-02-11 09:53:07

Writing to multiple programs

Time of First Successful Submission: 2026-02-11 10:51:43

Split-piping stderr and stdout

Time of First Successful Submission: 2026-02-11 11:05:17

Named pipes

Time of First Successful Submission: 2026-02-11 11:18:58

Printing Variables

Time of First Successful Submission: 2026-02-13 16:14:40

Setting Variables

Time of First Successful Submission: 2026-02-15 04:10:06

Multi-word Variables

Time of First Successful Submission: 2026-02-15 04:24:07

Exporting Variables

Time of First Successful Submission: 2026-02-15 04:33:09

Printing Exported Variables

Time of First Successful Submission: 2026-02-15 04:36:21

Storing Command Output

Time of First Successful Submission: 2026-02-15 04:45:41

Reading Input

Time of First Successful Submission: 2026-02-15 04:51:18

Reading Files

Time of First Successful Submission: 2026-02-15 04:54:41

Translating characters

Time of First Successful Submission: 2026-02-15 06:57:47

Deleting characters

Time of First Successful Submission: 2026-02-15 07:02:56

Deleting newlines

Time of First Successful Submission: 2026-02-15 07:14:58

Extracting the first lines with head

Time of First Successful Submission: 2026-02-15 07:41:07

Extracting specific sections of text

Time of First Successful Submission: 2026-02-15 07:47:56

Sorting data

Time of First Successful Submission: 2026-02-15 07:49:37

Listing Processes

Time of First Successful Submission: 2026-02-17 00:39:14

Killing Processes

Time of First Successful Submission: 2026-02-17 00:46:50

Interrupting Processes

Time of First Successful Submission: 2026-02-17 00:49:32

Killing Misbehaving Processes

Time of First Successful Submission: 2026-02-17 01:00:21

Suspending Processes

Time of First Successful Submission: 2026-02-17 01:33:20

Resuming Processes

Time of First Successful Submission: 2026-02-17 01:34:12

Backgrounding Processes

Time of First Successful Submission: 2026-02-20 02:50:18

Foregrounding Processes

Time of First Successful Submission: 2026-02-20 02:53:42

Starting Backgrounded Processes

Time of First Successful Submission: 2026-02-20 02:54:54

Process Exit Codes

Time of First Successful Submission: 2026-02-20 03:03:12

Becoming root with su

Time of First Successful Submission: 2026-02-20 04:54:40

Other users with su

Time of First Successful Submission: 2026-02-20 05:00:11

Cracking passwords

Time of First Successful Submission: 2026-02-20 05:11:44

Using sudo

Time of First Successful Submission: 2026-02-20 05:23:28

Changing File Ownership

Time of First Successful Submission: 2026-02-20 08:10:09

Groups and Files

Time of First Successful Submission: 2026-02-20 08:31:26

Fun With Groups Names

Time of First Successful Submission: 2026-02-20 08:34:30

Changing Permissions

Time of First Successful Submission: 2026-02-22 06:39:15

Executable Files

Time of First Successful Submission: 2026-02-22 06:41:45

Permission Tweaking Practice

Time of First Successful Submission: 2026-02-22 07:04:41

Permissions Setting Practice

Time of First Successful Submission: 2026-02-22 07:19:27

The SUID Bit

Time of First Successful Submission: 2026-02-22 07:25:11

Chaining with Semicolons

Time of First Successful Submission: 2026-02-22 07:56:43

Building on Success

Time of First Successful Submission: 2026-02-22 08:04:56

Handling Failure

Time of First Successful Submission: 2026-02-22 08:05:58

Your First Shell Script

Time of First Successful Submission: 2026-02-22 08:22:29

Redirecting Script Output

Time of First Successful Submission: 2026-02-22 08:28:42

Executable Shell Scripts

Time of First Successful Submission: 2026-02-22 08:33:42

Understanding Shebangs

Time of First Successful Submission: 2026-02-22 08:44:36

Scripting with Arguments

Time of First Successful Submission: 2026-02-22 08:54:01

Scripting with Conditionals

Time of First Successful Submission: 2026-02-22 09:05:56

Scripting with Default Cases

Time of First Successful Submission: 2026-02-22 09:07:51

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-02-22 09:11:39

Reading Shell Scripts

Time of First Successful Submission: 2026-02-22 09:15:28

Launching Screen

Time of First Successful Submission: 2026-02-22 09:29:53

Detaching and Attaching

Time of First Successful Submission: 2026-02-22 09:35:59

Finding Sessions

Time of First Successful Submission: 2026-02-22 09:42:53

Switching Windows

Time of First Successful Submission: 2026-02-22 09:45:53

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-02-22 09:51:25

Switching Windows (tmux)

Time of First Successful Submission: 2026-02-22 09:57:42

The PATH Variable

Time of First Successful Submission: 2026-02-22 10:43:37

Setting PATH

Time of First Successful Submission: 2026-02-22 10:50:05

Finding Commands

Time of First Successful Submission: 2026-02-22 10:51:53

Adding Commands

Time of First Successful Submission: 2026-02-22 11:08:09

Hijacking Commands

Time of First Successful Submission: 2026-02-22 11:47:03

Bashrc Backdoor

Time of First Successful Submission: 2026-02-22 12:26:20

Sniffing Input

Time of First Successful Submission: 2026-02-22 12:59:20

Overshared Directories

Time of First Successful Submission: 2026-02-24 01:09:32

Tricky Linking

Time of First Successful Submission: 2026-02-24 01:22:34

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-24 01:59:54

Snooping on Configurations

Time of First Successful Submission: 2026-02-24 02:05:42

The Fork Bomb

Time of First Successful Submission: 2026-02-24 03:03:51

Disk-Space Doomsday

Time of First Successful Submission: 2026-02-24 03:17:43

rm -rf /

Time of First Successful Submission: 2026-02-24 03:26:09

Life after rm -rf /

Time of First Successful Submission: 2026-02-24 03:34:31

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-02-24 03:46:55


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-09-21 07:07:15

Using the VSCode Workspace

Time of First Successful Submission: 2025-09-21 07:43:38

Using the GUI Desktop

Time of First Successful Submission: 2025-09-21 07:48:56

Pasting into the Desktop

Time of First Successful Submission: 2025-09-21 07:56:40

Restarting Challenges

Time of First Successful Submission: 2025-09-21 07:59:05

Getting Help

Time of First Successful Submission: 2025-09-21 08:02:46

Challenge Programs

Time of First Successful Submission: 2025-09-22 12:32:54

The Flag File

Time of First Successful Submission: 2025-09-22 12:52:27

Using Privileged Mode

Time of First Successful Submission: 2025-12-03 09:07:50

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-03 09:45:42

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-03 10:13:00