Posts tagged: linux

just has been by go to tool for saving commands in a way that I can replay them and have team members replay them without relying on the shell history of any given machine. This is my go to default step, it lets you pick a just command to run with a fuzzy picker.

ProblemType: Bug Distr…

This Thread saved my son’s ubuntu 24.04 install. His was failing to start with the following error.

Gdm: GdmSession: no session desktop files installed, aborting...

https://twitter.com/_WaylonWalker/status/1785825677079441482

...

TIL how to display the list of nfs mounts on your network.

showmount -e

You can even look for mounts of other machines on your network.

With the liscense changes to redis there are several new forks out there. One that I am particularly interested in is redka.

curl https://i.jpillora.com/nalgeon/redka | bash chmod +x redka ./redka database.db

We now have redis running on port 6379 that we can connect to with a redis client. And we have a sqlite database that we can inspect.

❯ sqlite3 database.db "SELECT name FROM sqlite_master;" rkey rkey_key_idx rkey_etime_idx rkey_on_type_update rstring rstring_pk_idx vstring rhash rhash_pk_idx rhash_key_id_idx vhash

We can look at the values in the vstring table.

The main system that I am concerned about is my arch BTW machine. I found a great article from the official archlinux site covering it.

For my machine I am concerned with this line.

The xz packages prior to version 5.6.1-2 (specifically 5.6.0-1 and 5.6.1-1) contain this backdoor.

I checked my xz package with AUR.">paru, and I am good.

AUR.">paru has some nice features that I rarely use, and hav to look up when I need them. Here are two commands to help with dependency management.

❯ paru -Qii nodejs Name : nodejs Version : 21.7.2-1 Description : Evented I/O for V8 javascript Architecture : x86_64 URL : https://nodejs.org/ Licenses : MIT Groups : None Provides : None Depends On : icu libuv libnghttp2 libnghttp3 libngtcp2 openssl zlib brotli c-ares Optional Deps : npm: nodejs package manager [installed] Required By : node-gyp nodejs-nopt npm semver Optional For : None Conflicts With : None Replaces : None Installed Size : 46.86 MiB Packager : Felix Yan <[email protected]> Build Date : Thu 04 Apr 2024 05:11:09 AM CDT Install Date : Mon 15 Apr 2024 07:27:02 AM CDT Install Reason : Installed as a dependency for another package Install Script : No Validated By : Signature Backup Files : None Extended Data : pkgtype=pkg

You can...

Check your system to see if you are vulnerable to the xz backdoor.

I found this line most pertanent to me.

The xz packages prior to version 5.6.1-2 (specifically 5.6.0-1 and 5.6.1-1) contain this backdoor.

Also it appears that arch is not vulnerable as it does not directly link openssh to liblzma, so the known attack vecotor is not possible. read to the end of the linked article for more.

I recently updated ollama, and it now installs a systemd service that I was not expecting. Seems like a great option, but I hadn’t expeted this and I was able to kill it previously. It was using up gpu, and I do other things on my machine with a gpu. I tried pkill, kill, and everything, it was still coming back.

No matter what it comes back

# stop it systemctl stop ollama.service # disable it if you want systemctl disable ollama.service # confirm its status systemctl status ollama.service

You can confirm this with the following command.

# checking running processes ps aux | grep ollama pgrep ollama # checking gpu processes gpustat --show-cmd --show-pid

Next time you want to start you can do it as before with ollama serve.

podman comes with a nice command for generating systemd service files (units).

Bat is my favorite pager, its the one for me that seems to just work more than the rest. colors, syntax highlighting, line numbers search, it just feels the most natural.

A very straightforward guide to moving your docker data, such as container storage to a different location. In my case I wanted it off of my boot drive.

I ran into some dns issues while running podman on arch, aparantly I had missed an optional dependency of aardvark-dns for container to container dns resolution.

I kept running into limits in the number of subuid and subgid’s I had on my system by default. As always thank the arch wiki guide for having the most comprehensive yet consice guide to setup podman.

What I needed to do to fix the error.

testdisk is an amazing command line utility (interactive tui) that just saved me a hard drive that was filled with data, but every machine that I plugged it into told me that it was completely unpartitioned.

A fantastic overview of the systemd cli.

Hacky solution to get zpool import tank to work on boot right away. This has been an issue that has plagued my system for months and no matter what dependencies I add in it never works, but adding a sleep as ExecStartPre did the trick.

sed can be a tricky beast, I often stumble when trying to pipe into it. Next time I need to use sed, I should reference this article by Nick Janetakis. He makes it looks much easier than my experience has been, and it appears to behave like a vim :%s/ substitution does, or a g/ g command.

On void linux. Under `/etc/containers/` there is a file called `registries.conf`. It is complemented by `man 5 containers-registries.conf`. Change (for me lines 11-12) which say [registries.search] registries = [] to

[registries.search] registries = ['docker.io']

(drawn from https://www.projectatomic.io/blog/2018/05/podman-tls/)