Linux on Cesar Gimenes

Deploying Applications Using curl

crg@crg.eti.br (Cesar Gimenes) — Sat, 09 Mar 2024 11:45:51 -0300

Small teams face several challenges when distributing binaries these days. If you simply put an application up for download on a website, search tools will immediately flag your site as suspicious content. Browsers show the user a scary warning, and there is no way to remove it, even with a signed binary. The warning only goes away once enough users have downloaded your binary without reporting problems.

Letting the user download the binary from some already well-known site, even GitHub, isn’t ideal, especially for closed-source applications.

Make Your Linux Less Secure and Slightly Faster

crg@crg.eti.br (Cesar Gimenes) — Sun, 26 Jun 2022 17:07:57 -0300

First, of course, don’t hold me responsible for what you do to your system — the responsibility is entirely yours.

There are several processing strategies that, despite producing a substantial performance gain, ended up introducing security flaws. What I did was take two machines from my cluster and configure the Linux kernel not to disable those features.

In my case, since I use Debian, I edited the file /etc/default/grub and added mitigations=off at the end of the GRUB_CMDLINE_LINUX_DEFAULT variable.

auto-cpufreq: dynamically adjusting CPU frequency

crg@crg.eti.br (Cesar Gimenes) — Thu, 03 Jun 2021 21:24:42 -0300

auto-cpufreq optimizes CPU frequency and reacts quite fast. It’s great for stretching battery life on a Linux laptop.

In my case, I use it to keep my small home server at a milder temperature, and in practice I haven’t noticed any real impact. There’s a bit of latency when the machine is “cold” and I suddenly start some heavy process, like opening an SSH+mosh+zsh session.

Installation

git clone https://github.com/AdnanHodzic/auto-cpufreq.git
cd auto-cpufreq
sudo ./auto-cpufreq-installer

Track CPU core frequency and temperature with the following command