Physer

Intro to Programming Languages

15 / 234 9857 / 32792


Commands

Time of First Successful Submission: 2026-03-23 17:21:12

Command Arguments

Time of First Successful Submission: 2026-03-23 17:21:56

Command History

Time of First Successful Submission: 2026-03-23 17:22:22

The Root Path

Time of First Successful Submission: 2026-03-23 17:28:11

Absolute Paths

Time of First Successful Submission: 2026-03-23 17:29:04

Changing position

Time of First Successful Submission: 2026-03-23 17:29:58

Changing to an Absolute Path

Time of First Successful Submission: 2026-03-23 17:31:12

Relative Paths

Time of First Successful Submission: 2026-03-23 17:32:02

Cat

Time of First Successful Submission: 2026-03-23 17:39:02

Ls

Time of First Successful Submission: 2026-03-23 17:45:17

Ls All

Time of First Successful Submission: 2026-03-23 17:58:48

Find

Time of First Successful Submission: 2026-03-23 18:13:29

Piping Echo

Time of First Successful Submission: 2026-04-15 20:44:09

Piping Stdout

Time of First Successful Submission: 2026-04-15 20:47:30

Piping Stdin

Time of First Successful Submission: 2026-04-15 21:02:31


Intro to Cybersecurity

14 / 183 12437 / 20368


Your First Overflow (easy)

Time of First Successful Submission: 2026-03-24 17:46:45

Your First Overflow (hard)

Time of First Successful Submission: 2026-04-20 17:07:39

Precision (easy)

Time of First Successful Submission: 2026-04-20 17:24:25

Precision (hard)

Time of First Successful Submission: 2026-04-20 17:45:19

Variable Control (easy)

Time of First Successful Submission: 2026-04-20 18:26:38

Variable Control (hard)

Time of First Successful Submission: 2026-04-20 18:13:50

Control Hijack (easy)

Time of First Successful Submission: 2026-04-20 19:31:10

Control Hijack (hard)

Time of First Successful Submission: 2026-04-20 19:26:17

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-04-20 23:14:57

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-04-20 23:09:28

PIEs (easy)

Time of First Successful Submission: 2026-04-21 20:43:09

PIEs (hard)

Time of First Successful Submission: 2026-04-21 20:37:28

String Lengths (easy)

Time of First Successful Submission: 2026-04-24 14:05:04

String Lengths (hard)

Time of First Successful Submission: 2026-04-24 14:07:47


Start Here

12 / 12 1853 / 44375


Using the Terminal

Time of First Successful Submission: 2026-03-23 15:55:43

Using the VSCode Workspace

Time of First Successful Submission: 2026-03-23 15:57:22

Using the GUI Desktop

Time of First Successful Submission: 2026-03-23 15:58:41

Pasting into the Desktop

Time of First Successful Submission: 2026-03-23 16:00:17

Restarting Challenges

Time of First Successful Submission: 2026-03-23 16:07:52

Challenge Programs

Time of First Successful Submission: 2026-03-23 16:14:46

The Flag File

Time of First Successful Submission: 2026-03-23 16:15:50

Using Privileged Mode

Time of First Successful Submission: 2026-03-23 16:21:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-23 16:23:56

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-23 16:24:42


Linux Luminarium

53 / 128 14503 / 33220


Intro to Commands

Time of First Successful Submission: 2026-03-23 17:21:12

Intro to Arguments

Time of First Successful Submission: 2026-03-23 17:21:56

Command History

Time of First Successful Submission: 2026-03-23 17:22:22

The Root

Time of First Successful Submission: 2026-03-23 17:28:11

Program and absolute paths

Time of First Successful Submission: 2026-03-23 17:29:04

Position thy self

Time of First Successful Submission: 2026-03-23 17:29:58

Position elsewhere

Time of First Successful Submission: 2026-03-23 17:31:12

implicit relative paths, from /

Time of First Successful Submission: 2026-03-23 17:32:02

explicit relative paths, from /

Time of First Successful Submission: 2026-03-23 17:33:21

implicit relative path

Time of First Successful Submission: 2026-03-23 17:34:32

home sweet home

Time of First Successful Submission: 2026-03-23 17:37:13

cat: not the pet, but the command!

Time of First Successful Submission: 2026-03-23 17:39:02

catting absolute paths

Time of First Successful Submission: 2026-03-23 17:39:28

more catting practice

Time of First Successful Submission: 2026-03-23 17:40:29

grepping for a needle in a haystack

Time of First Successful Submission: 2026-03-23 17:41:41

comparing files

Time of First Successful Submission: 2026-03-23 17:44:23

listing files

Time of First Successful Submission: 2026-03-23 17:45:17

touching files

Time of First Successful Submission: 2026-03-23 17:51:08

removing files

Time of First Successful Submission: 2026-03-23 17:56:36

moving files

Time of First Successful Submission: 2026-03-23 17:57:49

copying files

Time of First Successful Submission: 2026-03-23 17:58:13

hidden files

Time of First Successful Submission: 2026-03-23 17:58:48

An Epic Filesystem Quest

Time of First Successful Submission: 2026-03-23 18:05:29

making directories

Time of First Successful Submission: 2026-03-23 18:06:05

finding files

Time of First Successful Submission: 2026-03-23 18:13:29

linking files

Time of First Successful Submission: 2026-03-23 18:26:42

Learning From Documentation

Time of First Successful Submission: 2026-03-24 10:18:17

Learning Complex Usage

Time of First Successful Submission: 2026-03-24 10:19:30

Reading Manuals

Time of First Successful Submission: 2026-03-24 10:22:43

Searching Manuals

Time of First Successful Submission: 2026-03-24 10:25:02

Searching For Manuals

Time of First Successful Submission: 2026-03-24 10:36:38

Helpful Programs

Time of First Successful Submission: 2026-03-24 10:38:11

Help for Builtins

Time of First Successful Submission: 2026-03-24 10:42:09

Matching with *

Time of First Successful Submission: 2026-03-27 11:56:39

Matching with ?

Time of First Successful Submission: 2026-03-27 11:57:20

Matching with []

Time of First Successful Submission: 2026-03-27 11:59:00

Matching paths with []

Time of First Successful Submission: 2026-03-27 12:21:56

Multiple globs

Time of First Successful Submission: 2026-03-27 12:24:10

Mixing globs

Time of First Successful Submission: 2026-03-27 12:36:13

Exclusionary globbing

Time of First Successful Submission: 2026-03-27 12:36:57

Tab completion

Time of First Successful Submission: 2026-03-27 12:37:53

Multiple options for tab completion

Time of First Successful Submission: 2026-03-27 12:39:59

Tab completion on commands

Time of First Successful Submission: 2026-03-27 12:40:20

Redirecting output

Time of First Successful Submission: 2026-04-15 20:44:09

Redirecting more output

Time of First Successful Submission: 2026-04-15 20:47:30

Appending output

Time of First Successful Submission: 2026-04-15 20:52:20

Redirecting errors

Time of First Successful Submission: 2026-04-15 20:59:05

Redirecting input

Time of First Successful Submission: 2026-04-15 21:02:31

Grepping stored results

Time of First Successful Submission: 2026-04-15 21:04:27

Grepping live output

Time of First Successful Submission: 2026-04-15 21:06:18

Grepping errors

Time of First Successful Submission: 2026-04-17 21:25:28

Filtering with grep -v

Time of First Successful Submission: 2026-04-17 21:26:14

Filtering with sed

Time of First Successful Submission: 2026-04-17 21:27:31


Playing With Programs

18 / 116 15700 / 23591


cat

Time of First Successful Submission: 2026-03-27 15:25:01

more

Time of First Successful Submission: 2026-03-27 15:25:24

less

Time of First Successful Submission: 2026-03-27 15:25:47

tail

Time of First Successful Submission: 2026-03-27 15:26:44

head

Time of First Successful Submission: 2026-03-27 15:27:04

sort

Time of First Successful Submission: 2026-03-27 15:28:13

vim

Time of First Successful Submission: 2026-03-27 15:28:47

emacs

Time of First Successful Submission: 2026-03-27 15:29:19

nano

Time of First Successful Submission: 2026-03-27 15:30:01

rev

Time of First Successful Submission: 2026-03-27 15:31:05

od

Time of First Successful Submission: 2026-03-27 15:36:34

hd

Time of First Successful Submission: 2026-03-27 15:38:27

xxd

Time of First Successful Submission: 2026-03-27 15:40:39

base32

Time of First Successful Submission: 2026-03-27 15:41:28

base64

Time of First Successful Submission: 2026-03-27 15:41:50

split

Time of First Successful Submission: 2026-03-29 10:45:40

gzip

Time of First Successful Submission: 2026-03-29 10:46:50

bzip2

Time of First Successful Submission: 2026-04-04 15:35:15


GCA CTF

12 / 104 2101 / 44655


Using the Terminal

Time of First Successful Submission: 2026-03-23 15:55:43

Using the VSCode Workspace

Time of First Successful Submission: 2026-03-23 15:57:22

Using the GUI Desktop

Time of First Successful Submission: 2026-03-23 15:58:41

Pasting into the Desktop

Time of First Successful Submission: 2026-03-23 16:00:17

Connecting over SSH

Time of First Successful Submission: 2026-03-23 16:02:52

Restarting Challenges

Time of First Successful Submission: 2026-03-23 16:07:52

Getting Help

Time of First Successful Submission: 2026-03-23 16:09:46

Challenge Programs

Time of First Successful Submission: 2026-03-23 16:14:46

The Flag File

Time of First Successful Submission: 2026-03-23 16:15:50

Using Privileged Mode

Time of First Successful Submission: 2026-03-23 16:21:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-03-23 16:23:56

Persistent Home Directories - Two

Time of First Successful Submission: 2026-03-23 16:24:42