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Channel

Linux: Системный администратор

@linux_odmin

On this record: Growth · Engagement · Reactions · Posts · Citations · Handles named that no longer answer · Cite this entry

1,932subscribers

-1 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of 1,000–3,162.

Register entry

Telegram ID-1002392016592
TypeChannel
Username@linux_odmin
CreatedBetween 1 September 2024 and 31 March 2025— estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded7 August 2026
Last confirmed live10 August 2026
Measurements held3
Confirmed unchanged1 time, most recently 10 August 2026
On Telegramt.me/linux_odmin

Growth

1,9321,9331,932.57 August 2026 — 1,933 subscribers7 August 2026 — 1,933 subscribers10 August 2026 — 1,932 subscribers7 August 202610 August 2026
3 measurements spanning 3 days, net -1. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 1,932–1,933 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)SubscribersChange
10 Aug 2026, 12:171,932-1
7 Aug 2026, 22:561,933no change
7 Aug 2026, 00:461,933first reading

Engagement

20 posts held, back to 8 May 2026the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 2 pagesof Telegram’s post history, 20 posts per page.

ERR · 30 days
17.4%
avg views ÷ 1,932 subscribers
Avg views / post
336
7 posts measured
Reaction rate
1.45%
reactions ÷ views · ER floor
Posts in window
7
of 20 held

ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.

ER is defined industry-wide as (forwards + reactions + comments) ÷ views— note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.

What these figures were computed from
WindowRolling 30 days · latest post in window 6 August 2026
Posts held20 (8 May 20266 August 2026)
Views total2,351
Reactions total34
Forwards / commentsnot exposed by the public surface — not measured, not estimated
Readings taken7 Aug 2026, 17:14 UTC

Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.

Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.

Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.

Reaction mix

94 reactions across 19 posts, in 7 distinct kinds. The most used accounts for 60.6% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
👍5760.6%
1414.9%
🔥88.51%
🤮66.38%
👎55.32%
🤡33.19%
🤯11.06%

No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.

Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.

Coverage. Reactions were read on 19 of the 20 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 94reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 20 most recent posts we hold, published 8 May 2026 to 6 August 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Recent posts

6 Aug 2026, 06:06 UTC159 views1 reactionsread 7 August 2026

⚠️ systemd-networkd и маршруты: частая ошибка с static routes Если ты настраиваешь сеть через systemd-networkd и вручную прописываешь маршруты, будь внимателен: непрописанный gateway может сломать всё подключение. 📄 Пример .network файла с правильным static route: [Match] Name=eth0 [Network] Address=192.168.1.10/24 Gateway=192.168.1.1 [Route] Destination=10.10.0.0/16 Gateway=192.168.1.1 🔍 Типичная ошибка: [R

👍1

3 Aug 2026, 06:37 UTC248 views2 reactionsread 7 August 2026

💡 Как быстро сбросить зависший SSH-сеанс без ожидания таймаута Иногда SSH-соединение замирает (например, при потере сети), и попытка закрыть его обычным Ctrl+C не работает. Не жди таймаута — есть правильный способ разорвать зависший сеанс. 🔧 Решение: спец-последовательность OpenSSH Нажми Enter, затем ~. (тильда + точка) — и SSH сразу завершится: <Enter>~. 🔍 Как это работает ~. — escape-последовательность, вст

👍2

30 Jul 2026, 21:01 UTC386 views14 reactionsread 7 August 2026

🎉 Поздравляем с Днём системного администратора! Фразы, которые сисадмин говорит вслух: — Сейчас посмотрим. — Уже почти готово. — Попробуйте ещё раз. И фразы, которые он думает: — Перезагрузите уже наконец... — Нет, принтер не сломан. — Да, пароль действительно нужно вводить правильно. Пусть сегодня никто не отвлекает по пустякам, а мониторинг будет скучным.

👍86

29 Jul 2026, 06:19 UTC351 views5 reactionsread 7 August 2026

💥 WireGuard: Быстрая настройка через systemd без ifupdown и Netplan Хочешь минимализм без танцев с бубном? Вот как быстро поднять WireGuard-туннель чисто через systemd — особенно удобно на серверах без NetworkManager. 📌 1. Создай конфиг /etc/wireguard/wg0.conf: [Interface] Address = 10.0.0.1/24 PrivateKey = <your_private_key> ListenPort = 51820 [Peer] PublicKey = <peer_pub_key> AllowedIPs = 10.0.0.2/32 ⚠️ Убе

👍3🔥2

25 Jul 2026, 11:10 UTC352 views6 reactionsread 7 August 2026

🚀 Подборка полезных IT каналов в Max Системное администрирование, DevOps 📌 https://max.ru/i_odmin Все для системного администратора https://max.ru/bash_srv Bash Советы https://max.ru/sysadminof Книги для админов, полезные материалы https://max.ru/i_odmin_book Библиотека Системного Администратора https://max.ru/i_devops DevOps: Пишем о Docker, Kubernetes и др. https://max.ru/tipsysdmin Типичный Сисадмин https://max

🤮5🤡1

21 Jul 2026, 08:08 UTC406 views4 reactionsread 7 August 2026

🔒 Как быстро заблокировать IP через nftables без перезапуска правил Иногда нужно срочно отрубить наглого сканера или атакующего IP, но без пересборки всего firewall-правила. Вот как это делается динамически, через nftables. 🔹 Шаг 1: создаём таблицу и цепочку (если ещё нет) nft add table inet filter nft add chain inet filter input { type filter hook input priority 0 \; } 🔹 Шаг 2: создаём сет blocked_ips nft ad

👍2🔥2

15 Jul 2026, 07:31 UTC449 views2 reactionsread 7 August 2026

⏰ Systemd вместо cron: как настроить таймеры правильно Привет, друзья! Сегодня покажу, как можно элегантно заменить cron с помощью systemd-таймеров. Это удобно, прозрачно и гибко — особенно в серверной среде, где важен контроль над логами, зависимостями и запуском задач. 💡 Почему лучше, чем cron? - логи идут через journalctl - удобная отладка: systemctl status, list-timers - можно задать зависимости и условия з

👍1🔥1

2 Jul 2026, 07:55 UTC563 views4 reactionsread 7 August 2026

🛠 strace: незаменимый инструмент для отладки зависших процессов Привет, друзья! Сегодня расскажу про одну из моих любимых утилит — strace. Она помогает понять, что именно делает (или не делает) ваш процесс. Представьте: процесс висит. Никаких логов. CPU не грузит. Что делать? ✅ Запускаем strace: sudo strace -p <PID> Где <PID> — идентификатор зависшего процесса. 📌 Вы сразу увидите системные вызовы, которые дел

👍3🔥1

25 Jun 2026, 07:58 UTC625 views10 reactionsread 7 August 2026

🛡 Сегодня расскажу, как быстро проверить безопасность конфигурации SSH-сервера Открытый SSH — это ворота на сервер. И если конфигурация слабая, то защита — как дверь из картона. Проверим, насколько хорошо у вас настроен sshd. ✅ Вот простой чеклист, что стоит сделать: # 1. Отключить root-доступ PermitRootLogin no # 2. Включить только ключевую авторизацию PasswordAuthentication no # 3. Установить ограничение по I

👍64

23 Jun 2026, 07:25 UTC504 views5 reactionsread 7 August 2026

🔧 Сегодня покажу вам простой способ ограничить ресурсы для процессов с помощью cgroups v2 Иногда на сервере какой-нибудь процесс начинает «жрать» всё подряд — CPU, память, I/O. Чтобы таких ситуаций избежать, можно использовать cgroups v2. 📦 Пример: ограничим использование CPU и памяти для скрипта # Создаём директорию cgroup CGROUP=/sys/fs/cgroup/mylimit mkdir $CGROUP # Ограничим память до 200M echo $((200*1024*1

👍41

18 Jun 2026, 08:58 UTC554 views5 reactionsread 7 August 2026

👋 Привет, коллеги! Сегодня хочу поделиться тем, что стоит автоматизировать на сервере в первую очередь. Это база, которая поможет вам сэкономить кучу времени и спать спокойно 😴 🔧 Что обязательно автоматизировать: 1. Резервное копирование (бэкапы) > Без бэкапов нет продакшена. Это аксиома. - Автоматизируйте регулярные бэкапы баз данных, конфигов, важных каталогов. - Используйте rsnapshot, borg, restic, duplicity.

👍4🔥1

10 Jun 2026, 06:39 UTC578 views5 reactionsread 7 August 2026

💡 Как я ускоряю поиск по логам в Linux Сегодня покажу вам приём, который не раз спасал мне нервы при анализе логов. Представим, что нужно найти ошибки в большом лог-файле, например /var/log/nginx/access.log. Обычно все начинают с: cat access.log | grep "500" Но это медленно. Лучше так: grep "500" access.log Ещё лучше — использовать less и внутри него grep-подобный поиск: less +F access.log А затем нажат

👍5

Showing the 12 most recent of 20 posts we hold for @linux_odmin. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Citation-graph rank

Citation-graph rank — 871,924 of 1,151,006entries in the measured graph. A weighted position computed from the forward and mention edges below — republished posts weigh more than named mentions — and recomputed periodically, over the whole graph. Published only as this ordinal position, never as a score: a position is a fact, and a score printed beside one channel’s name would read as a verdict this register does not make. The two counts beneath stay separate for the same reason mentions are never summed with forwards anywhere else on this page — a named-by count costs nothing to manufacture. The top 100 by this measure, or how it is computed.

Mentions

Named by 4 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.

Names

Channels on the register whose handles appear in this channel's posts.

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 10 August 2026 — this entry's latest reading, not the date you are reading this.

“Linux: Системный администратор” (@linux_odmin), 1,932 subscribers as measured 10 August 2026. Telegram Register, tgregister.com/channel/linux_odmin.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.