jdmichaud

Create a systemd service

Create a unit file in /etc/systemd/system named foo.service. Then:

sudo systemctl start foo

If the file is modified:

sudo systemctl daemon-reload

jdmichaud

// cc -I/usr/include/hidapi/ -ggdb3 mouse.c -lhidapi-hidraw -o mouse
#include <stdio.h> // printf
#include <wchar.h> // wchar_t

#include <hidapi.h>
#include <string.h>

#define MAX_STR 255

int main(int argc, char* argv[])

jdmichaud

Program linkers link object file together to create either:

• An executable file
• A shared library

Dynamic linkers link the executing program to a shared library at runtime.

Basic data types

Defined symbols are static objects within the source code that are defined for the entirety of the program (function or global and static variables).

jdmichaud

The the glic version used by an executable:

objdump -T /usr/bin/ls | grep GLIBC | sed 's/.*GLIBC_\([.0-9]*\).*/\1/g' | sort -Vu | tail -1

jdmichaud

Documentation

https://docs.conan.io/2/tutorial/consuming_packages/build_simple_cmake_project.html

Install using the binary

https://docs.conan.io/2/installation.html#use-a-system-installer-or-create-a-self-contained-executable

curl -OL https://github.com/conan-io/conan/releases/download/2.5.0/conan-2.5.0-linux-x86_64.tgz
tar zxf conan-2.5.0-linux-x86_64.tgz

jdmichaud

Start a stream on udp:

ffmpeg \
  -re \
  -i /path/to.movie.avi \
  -vf subtitles=/path/to/subtitles.srt \
  -f mpegts \
  -codec:v mpeg1video \
  -b:v 1000k \
 -bf 0 \

jdmichaud

Config

Create an alias

$ cat >> ~/.ssh/config
Host <ALIAS_NAME>
  HostName 1.2.3.4
  User jd

Authentication

jdmichaud

from https://www.yingtongli.me/blog/2018/07/30/kobo-rego.html

- Do not connect the device to the WiFi.
- Plug the USB cable to your computer
- In a termina, open the mass storage device that appear.
```bash
cd .kobo
sqlite3 KoboReader.sqlite
```
Then:

jdmichaud

const std = @import("std");

const stdout = std.io.getStdOut().writer();

const Type = enum(u3) {
  COEUR   = 0b000,
  CARREAU = 0b001,
  PIQUE   = 0b010,
  TREFLE  = 0b011,
  ATOUT   = 0b100,

jdmichaud

# Mingle ls/xargs/extension substitution
ls somepath/*.txt | xargs -n1 -i bash -c 'echo cp "$1" "${1%.txt}.dat"' - '{}'

# - `-n1` will make xargs take only one parameter at a time instead of the whole list of files.
# - Using a bash command allows to pass {} (which is a xargs args) to the shell and perform substitution on it
# source:
#  https://stackoverflow.com/a/965072/2603925
#  https://stackoverflow.com/a/45895212/2603925
#  https://stackoverflow.com/a/64924231/2603925