Remote

Matthias Schmidt

@xhr@infosec.exchange

mastodon 4.8.0-alpha.3+glitch

OpenBSD user ● DragonFly BSD committer (retired) ● InfoSec and CCC for > 25y ● C3FOC ● Pronouns: he/him

finger m@f.xosc.org for more information

Posts are deleted after 2 years!

981 Followers

193 Following

15 Posts

Joined August 01, 2025

Website:

https://xosc.org

Code:

https://github.com/thexhr

$HOME:

Karlsruhe, DE, EU

Previous account:

https://cybervillains.com/@_xhr_

Matthias Schmidt @xhr@infosec.exchange

· 14mo ago

Wow, after 25 years of #Unix / #linux experience, I learned that you can filter output in #less.

Press ampersand (&) and enter a regex to show only lines matching the regex.

Press ampersand (&) and then exclamation mark (!) to apply an inverse filter.

infosec.exchange

Infosec Exchange

596

353

Matthias Schmidt @xhr@infosec.exchange

· 8mo ago

I wrote a small article on how to backup Unix servers using tar and age. Nothing fancy, just the script and concept I use for all my servers. https://xosc.org/backup-server.html #openbsd #freebsd #netbsd #linux

xosc.org

Matthias Schmidt @xhr@infosec.exchange

· 2mo ago

Replying to

@treibholz@mastodon.online I've seen a lot in 30y of Unix usage, but a 27k LOC shell script is new to me. Reminds me of the good old QBASIC times where the whole code was also in a single file.

Matthias Schmidt @xhr@infosec.exchange

· 4mo ago

Another fun day with #netcup :

"In order to ensure the continued stability of your system, it was urgently necessary to move your server XXXXXX to another host
system.

We have done this to protect your data and to ensure the regular operation of your server. The migration has just been completed with the
restart of your server.

We generally recommend removing snapshots if they are not needed. In general, this allows us to move your server live, so that no restart is
necessary. In exceptional cases, however, it may be necessary for us to perform a reboot nevertheless, then we will of course inform you
beforehand, as in this case.

Usually we also try to inform you about such a migration process with a necessary reboot in advance. Unfortunately, this was not possible in
the current case due to the urgency.

Thank you for your understanding."

Usually you get this advertisements if someone had fun on the machine with a guest-to-host exploit.

Any recommendations for a VPS hosting provider where I can run #OpenBSD? I already have two VMs at @OpenBSDAms@mastodon.bsd.cafe , so another one would be good :)