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First utils

localectl list-keymaps
loadkeys fr
# setfont ter-132b
kdbrate -d 500 -r 10

INTERNET

Script execution

Shebang

List env variables

env
printenv

Shell variable VS Environment variable

Shell

@ArthurDelannoyazerty
ArthurDelannoyazerty / earth_grid.py
Last active July 7, 2025 15:41
Generate a earth grid and display them in a folium intercative HTML page
import folium
import s2geometry as s2
from folium.plugins import Draw
def get_grid_coords(min_lat, max_lat, min_lng, max_lng, level, max_cells=0):
"""Generate S2 cells covering a specified region at a given level."""
region = s2.S2LatLngRect(
s2.S2LatLng.FromDegrees(min_lat, min_lng),
s2.S2LatLng.FromDegrees(max_lat, max_lng)
@ArthurDelannoyazerty
ArthurDelannoyazerty / geometries_to_html.py
Last active July 7, 2025 14:55
Display geojson/geometris on a earth map and save it as html interactive page
import folium
from pathlib import Path
from folium.plugins import Draw
def display_geometries(list_geometries:list, output_filepath:Path, inverse_lat_lon:bool=True):
"""
Save the geometries on a map on a html page with an Earth background.
Args:
list_geometries (list[dict]): List of geometry dicts to plot.
output_filepath (Path): Path to save the output html file.
# IDE
# .vscode/      # commented to share info with others

# MacOS
*.DS_Store

# Virtual env
.venv/
venv/
@ArthurDelannoyazerty
ArthurDelannoyazerty / f_strings.md
Last active July 1, 2025 16:29
Python f strings examples

Center text

heading = "Centered string"
print( f'{heading:=^30}' )      #| = is for the char to print | ^ Is to center the text | 30 is the total length of the final string

'=======Centered string========'

Align text

@ArthurDelannoyazerty
ArthurDelannoyazerty / interface_sql.py
Last active July 1, 2025 12:56
Communicate easily with a sqp database
import psycopg2 # pip install psycopg2-binary
from typing import Optional
class InterfaceSQL:
def __init__(self, database:str, host:str, port:str, user:str, password:str):
conn = psycopg2.connect(
database=database,
host=host,

SSH

Create ssh public & private key (Linux & Windows)

ssh-keygen
  1. You will be asked the location to store the ssh keys (default : ~/.ssh/id_rsa)
  2. You will be asked the ssh passphrase 2 times
  3. Then the keys will be generated (public: id_rsa.pub | private: id_rsa)