khiemdoan

Count connections

select
    client_addr,
    application_name,
    count(pid)
from pg_stat_activity
group by client_addr, application_name
order by count(pid) desc;

khiemdoan

#!/bin/bash
    
CHAT_ID=<chat_id>
BOT_TOKEN=<bot_token>

# this 3 checks (if) are not necessary but should be convenient
if [ "$1" == "-h" ]; then
  echo "Usage: `basename $0` \"text message\""
  exit 0
fi

khiemdoan

# /etc/netplan/00-installer-config.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    eno1:
      dhcp4: false
      dhcp6: false
     addresses:

khiemdoan

__author__ = 'Khiem Doan'
__github__ = 'https://github.com/khiemdoan'
__email__ = '[email protected]'

from datetime import datetime, timedelta
from typing import Self

from aredis_om import EmbeddedJsonModel as RedisEmbeddedJsonModel
from aredis_om import HashModel as RedisHashModel

khiemdoan

With Ubuntu server:

sudo apt install open-vm-tools

With Ubuntu desktop

sudo apt install open-vm-tools open-vm-tools-desktop

khiemdoan

Restore postgres database

pg_restore --verbose --clean --no-acl --no-owner --host=localhost --dbname=db_name --username=username latest.dump

khiemdoan

Fedora Setup

Update packages

sudo dnf update

Enable linger

khiemdoan

Fonts

Download and use Meslo LG M Regular Nerd Font

Meslo.zip

Setup font for Visual Studio Code

"terminal.integrated.fontFamily": "'MesloLGM Nerd Font', 'MesloLGM NF', monospace"

khiemdoan

Python

• loguru - Loguru is a library which aims to bring enjoyable logging in Python.
• more-itertools - More routines for operating on iterables, beyond itertools.
• pydantic - Data validation using Python type hints.
• msgspec - A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML.
• SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper.
• Advanced Alchemy - Advanced Alchemy is a carefully crafted, thoroughly tested, optimized companion library for SQLAlchemy, offering useful and easy-to-use features for your database projects.
• SQLModel - SQLModel, SQL databases in Python, designed for simplicity, compatibility, and robustness.
• [Tortoise ORM](https

khiemdoan

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>ANSIBlackColor</key>
    <data>
    YnBsaXN0MDDUAQIDBAUGBwpYJHZlcnNpb25ZJGFyY2hpdmVyVCR0b3BYJG9iamVjdHMS
    AAGGoF8QD05TS2V5ZWRBcmNoaXZlctEICVRyb290gAGjCwwTVSRudWxs0w0ODxARElVO
    U1JHQlxOU0NvbG9yU3BhY2VWJGNsYXNzTxAoMC4wMzkzODA3MzY2NSAwLjE2MDExNjQ2
    MzkgMC4xOTgzMzI3NTY4ABABgALSFBUWF1okY2xhc3NuYW1lWCRjbGFzc2VzV05TQ29s