Everyone is rated on the same nineteen topics

A rated attempt is scored like a match against the lab: pass inside the limit and you beat it; fail, or run over, and it beats you. Ratings are Glicko-2, so every number carries its own uncertainty — a profile says 1500 ± 350 until it has earned the right to be more precise.

A rating comes from rated labs and rated theory. Those are graded by the server against your account. An unrated attempt is still recorded — it shows on your profile with its score and its time. No rated lab has been published yet, so today the board is empty of real players; the sample accounts are marked. Why the catalogue is split.

Sample data. Nobody here is real. These 100 accounts are generated by seed/generate.py and replayed through the same rating code the live service runs, so the pages can be judged before anyone has signed up.

Nick Topic any AI AgentsAI ServicesAnsibleBashBoot and systemdClaude CodeContainersFirewall and SELinuxKernel and performanceLinux basicsLogging and journaldModel Context ProtocolNetworkingOllamaPythonStorage and LVMTerraformUsers and permissions Rating at least 1200 and at most 1810

100 of 100

#		Learner	Rating	Best topics	Passed	Attempts
1		clara-curl 🇺🇸	1804 ± 35	Networking, Terraform, Logging and journald	86	94
2		bex-nice 🇫🇷	1798 ± 34	Networking, Terraform, Python	90	97
3		cassyank 🇺🇸	1803 ± 42	Python, Users and permissions, Boot and systemd	54	59
4		ivowget 🇩🇪	1800 ± 42	Linux basics, Python, Networking	47	51
5		nadialvm 🇳🇱	1775 ± 36	Bash, Python, Users and permissions	71	79
6		hash3 🇦🇺	1747 ± 34	Python, Users and permissions, Claude Code	78	93
7		clara-root 🇳🇴	1753 ± 36	Python, Storage and LVM, AI Agents	67	76
8		wren-bit 🇺🇸	1745 ± 34	Logging and journald, Bash, Users and permissions	96	120
9		jonasmount 🇺🇸	1788 ± 58	Users and permissions, Claude Code, Linux basics	28	28
10		nils-tty 🇩🇪	1784 ± 59	Python, Boot and systemd, Networking	17	19
11		lena-runs 🇫🇷	1726 ± 40	Claude Code, Bash, Terraform	45	52
12		lena-kernel 🇮🇪	1703 ± 30	Ollama, Boot and systemd, Storage and LVM	87	102
13		elin-ops 🇩🇪	1714 ± 45	Networking, Linux basics, Boot and systemd	38	43
14		curl97 🇺🇸	1681 ± 30	Ollama, Model Context Protocol, Claude Code	87	104
15		wren-lab 🇺🇸	1699 ± 40	Logging and journald, AI Services, Boot and systemd	49	57
16		sudo86 🇬🇧	1678 ± 32	AI Services, Firewall and SELinux, Terraform	79	95
17		wget49 🇺🇸	1705 ± 46	Python, AI Agents, Terraform	37	42
18		wrenquota 🇪🇸	1670 ± 31	Ansible, Boot and systemd, Containers	86	109
19		matzvim 🇬🇧	1681 ± 38	Logging and journald, Python, Ollama	55	64
20		matz-daemon 🇬🇧	1695 ± 45	Bash, Boot and systemd, Python	33	42
21		xenia-runs 🇺🇸	1683 ± 40	Ollama, Logging and journald, Users and permissions	44	52
22		bruno-tmux 🇦🇺	1675 ± 37	Bash, AI Agents, Firewall and SELinux	65	80
23		elin-lvm 🇩🇪	1658 ± 34	Containers, Storage and LVM, AI Services	62	82
24		shell34 🇵🇹	1717 ± 66	Claude Code, Bash, Linux basics	18	18
25		sudo50 🇮🇹	1641 ± 29	Firewall and SELinux, Terraform, Boot and systemd	93	126
26		antonpipe 🇫🇷	1731 ± 79	Linux basics, Networking, Firewall and SELinux	9	9
27		fsck44 🇩🇪	1643 ± 35	Networking, Firewall and SELinux, Bash	51	71
28		udev51 🇦🇺	1661 ± 44	Bash, Claude Code, Networking	38	45
29		anton-sudo 🇮🇪	1660 ± 44	Users and permissions, Boot and systemd, Bash	32	42
30		forge87 🇺🇸	1654 ± 42	Claude Code, Firewall and SELinux, Networking	45	52
31		bruno-patch 🇦🇺	1645 ± 39	AI Services, AI Agents, Logging and journald	47	59
32		ola-cron 🇺🇸	1634 ± 36	Users and permissions, Bash, Ansible	45	61
33		gus-zsh 🇯🇵	1659 ± 49	Model Context Protocol, Users and permissions, Ansible	30	36
34		nadia-ops 🇬🇧	1618 ± 29	Python, Model Context Protocol, Firewall and SELinux	78	106
35		pavel-grep 🇳🇱	1651 ± 47	Linux basics, Python, Bash	26	33
36		rafa-vim 🇯🇵	1650 ± 47	Bash, Model Context Protocol, Linux basics	33	39
37		jonas-swap 🇫🇷	1650 ± 48	Networking, Firewall and SELinux, Users and permissions	27	35
38		mount66 🇦🇺	1635 ± 40	Claude Code, AI Agents, Containers	45	55
39		xenialvm 🇺🇸	1666 ± 59	Python, Boot and systemd, Linux basics	15	17
40		kai-stack 🇨🇿	1612 ± 36	Firewall and SELinux, Logging and journald, Model Context Protocol	52	79
41		ivo-wget 🇪🇸	1604 ± 32	Model Context Protocol, Boot and systemd, Python	81	108
42		petra-daemon 🇳🇴	1597 ± 30	Boot and systemd, Kernel and performance, Storage and LVM	78	110
43		oscar-udev 🇩🇪	1604 ± 39	Python, Linux basics, Users and permissions	52	65
44		patch13 🇮🇪	1613 ± 47	Claude Code, Terraform, Boot and systemd	26	39
45		tomasquota 🇯🇵	1574 ± 31	AI Services, Networking, Firewall and SELinux	75	109
46		hana-zsh 🇨🇿	1566 ± 27	Kernel and performance, Firewall and SELinux, Model Context Protocol	89	133
47		udev8 🇦🇺	1575 ± 32	Storage and LVM, Ansible, Logging and journald	67	96
48		quinntux 🇯🇵	1567 ± 28	Terraform, Containers, Claude Code	84	128
49		jonastty 🇳🇴	1575 ± 35	Firewall and SELinux, Networking, AI Services	52	79
50		elin-umask 🇳🇿	1565 ± 30	Ollama, Bash, Claude Code	79	113
51		oscar-tux 🇵🇱	1575 ± 36	Python, Linux basics, Boot and systemd	59	76
52		socket38 🇮🇹	1620 ± 61	Users and permissions, Model Context Protocol, Logging and journald	16	19
53		elin-wget 🇺🇸	1545 ± 29	Ansible, Kernel and performance, Model Context Protocol	80	124
54		nils-hash 🇸🇪	1540 ± 26	AI Services, Ollama, Terraform	82	128
55		kolyacurl 🇺🇸	1603 ± 59	Linux basics, Bash, Ollama	15	17
56		udev15 🇳🇱	1554 ± 37	Model Context Protocol, Networking, Logging and journald	40	58
57		quinnswap 🇦🇺	1554 ± 38	AI Agents, Linux basics, Networking	44	61
58		xenia-fsck 🇦🇺	1551 ± 37	Python, Logging and journald, Users and permissions	56	88
59		mount32 🇷🇴	1507 ± 28	AI Services, Storage and LVM, Ollama	77	124
60		shell49 🇮🇹	1558 ± 55	Bash, Model Context Protocol, Boot and systemd	15	20
61		xeniasudo 🇳🇱	1513 ± 34	Storage and LVM, Containers, Terraform	46	76
62		kolya-cron 🇵🇱	1501 ± 31	AI Agents, Claude Code, AI Services	73	115
63		quinnroot 🇯🇵	1511 ± 40	Model Context Protocol, Networking, Firewall and SELinux	44	58
64		quota21 🇺🇸	1492 ± 34	Ansible, Linux basics, Users and permissions	47	73
65		patch15 🇸🇪	1471 ± 30	Ansible, Users and permissions, Bash	66	113
66		matz-swap 🇺🇸	1467 ± 30	Ansible, Storage and LVM, AI Agents	61	109
67		pipe31 🇸🇪	1478 ± 36	Bash, Firewall and SELinux, Python	40	73
68		rafa-runs 🇵🇱	1469 ± 32	Ansible, Terraform, Containers	63	96
69		pavel-hash 🇺🇸	1470 ± 40	Kernel and performance, Ansible, Terraform	31	51
70		mirastack 🇺🇸	1524 ± 67	Linux basics, Ansible, Model Context Protocol	8	12
71		quinnlvm 🇯🇵	1507 ± 60	Boot and systemd, Firewall and SELinux, Ansible	9	15
72		hanacore 🇵🇹	1484 ± 55	Boot and systemd, Linux basics, AI Agents	11	18
73		tomas-fsck 🇪🇸	1431 ± 30	Users and permissions, Storage and LVM, Bash	53	103
74		curl44 🇺🇸	1493 ± 63	Networking, Model Context Protocol, Bash	14	20
75		cass-pipe 🇯🇵	1434 ± 35	Kernel and performance, Storage and LVM, Ansible	34	72
76		esa-root 🇺🇸	1515 ± 79	Logging and journald, Users and permissions, Networking	4	7
77		kolya-root 🇷🇴	1402 ± 36	Kernel and performance, Bash, Ansible	29	70
78		halforge 🇮🇹	1387 ± 33	Logging and journald, Python, Kernel and performance	29	73
79		cass-curl 🇵🇹	1410 ± 46	AI Services, Terraform, Containers	17	33
80		miracron 🇺🇸	1388 ± 37	Logging and journald, Ansible, Containers	35	61
81		pavel-wget 🇳🇿	1377 ± 37	Kernel and performance, Firewall and SELinux, Linux basics	32	73
82		curl74 🇳🇴	1363 ± 31	Claude Code, Firewall and SELinux, Users and permissions	46	94
83		shell27 🇸🇪	1388 ± 45	Logging and journald, Containers, Networking	18	39
84		grep20 🇺🇸	1402 ± 53	Kernel and performance, Boot and systemd, Python	10	21
85		petra-forge 🇬🇧	1374 ± 45	Kernel and performance, Logging and journald, Terraform	27	51
86		loreroot 🇩🇪	1418 ± 67	Networking, Firewall and SELinux, Ansible	7	14
87		bruno-lvm 🇸🇪	1319 ± 32	Kernel and performance, Storage and LVM, Linux basics	34	99
88		lvm78 🇩🇪	1361 ± 56	Logging and journald, Claude Code, AI Agents	11	25
89		swap17 🇳🇴	1317 ± 35	Terraform, AI Agents, Claude Code	35	77
90		ola-shell 🇬🇧	1325 ± 41	Terraform, Storage and LVM, Model Context Protocol	17	46
91		cass-core 🇺🇸	1298 ± 29	Logging and journald, AI Services, Storage and LVM	41	110
92		udev67 🇺🇸	1349 ± 55	Kernel and performance, Ansible, Containers	10	19
93		yank69 🇺🇸	1372 ± 71	AI Services, Ollama, Networking	5	16
94		hana-nice 🇫🇷	1321 ± 47	Ollama, Storage and LVM, Kernel and performance	15	34
95		sanalvm 🇵🇱	1322 ± 50	Firewall and SELinux, Containers, Ansible	11	34
96		nice82 🇫🇷	1362 ± 71	Users and permissions, Logging and journald, Linux basics	4	13
97		byte58 🇪🇸	1258 ± 44	AI Agents, Boot and systemd, Python	6	34
98		hal-ops 🇺🇸	1233 ± 38	Firewall and SELinux, AI Services, Networking	21	65
99		socket53 🇯🇵	1207 ± 39	AI Agents, Storage and LVM, Claude Code	13	65
100		kai-swap 🇵🇱	1210 ± 45	Ansible, Bash, Linux basics	10	36