datavudeja

How to write special characters in a variety of documentation forms.
Examples are Arrow keys, copyright, trademark, degrees (temperature or latitude/longitude)

• MarkDown
• GitHub
• Microsoft Word
• HTML

• Unicode
• Fonts

datavudeja

UUID and GUID

IT techs that use imaging/deployment and/or DHCP/PXE will often be working with a computer's GUID, UUID, or MAC address. For example, you have received a shipment of new desktops and are preloading your Windows Active Directory with the new computer names in the desired OU. You will then be ready to boot them and have the new computers network PXE and start installing your company base image. The packaging gives you the UUID but you need to provide the GUID to the computer proerties in AD.

Some tools to help convert back and forth between the different formats.

Example:
WFLGNVLAB01
UUID: 457A9480-E7BE-11E2-9C6A-8851FB69DFA3
GUID: 80947A45-BEE7-E211-9C6A-8851FB69DFA3

datavudeja

Error Code	Dec Error Code	Error String	Description
0x00000000	-4294967296	Success
0x0000007B	-4294967173	Error_Invalid_Name	The filename, directory incorrect

calc.exe
Menu, Programmer
[Hex] 0x7B
[Dec] 123

datavudeja

PUSHD %~dp0
SET DateString=%DATE:~10,4%%DATE:~4,2%%DATE:~7,2%

datavudeja

REISUB - the gentle Linux restart

According to Lifehacker a frozen Linux system that's not responding to the Ctrl-Alt-Delete three-finger-salute can be restarted more safely than by pushing the power button, which is usually the next step.

Holding down Alt and SysRq (which is the Print Screen key) while slowly typing REISUB will get you safely restarted. REISUO will do a shutdown rather than a restart.

Sounds like either an April Fools joke or some very strange magic akin to the old BIOS beeps we used to use to diagnose PC faults so bad that nothing would boot. Wikipedia comes to the rescue with an in-depth listing of all the SysRq keys.

R: Switch the keyboard from raw mode to XLATE mode
E: Send the SIGTERM signal to all processes except init

datavudeja

:again
  if "%~1" == "" GOTO done
    ffmpeg.exe -i "%~1" -t 00:00:15 "%~n1_clip%~x1"
  SHIFT
GOTO again
:done

datavudeja

@echo off

net session >nul 2>&1
if %errorlevel% neq 0 (
    echo Requesting administrative privileges...
    powershell -Command "Start-Process '%~f0' -Verb RunAs"
    exit /b
)

wsl sudo fstrim --all; echo "Exit status: $?";

datavudeja

import pandas as pd
import hashlib
from datetime import datetime

def detect_dataframe_changes(source_df: pd.DataFrame, target_df: pd.DataFrame, primary_key: str, ignored_columns: list):
    """
    Detects inserted, updated, and deleted rows between two DataFrames.

    Args:
        source_df (pd.DataFrame): The source DataFrame.

datavudeja

import pandas as pd
import ray
from ray.data import Dataset
from ray.data.context import DataContext, ShuffleStrategy
from typing import List
import time
from ray.data.aggregate import Count, Mean, Min, Max, Quantile, Std, Unique, AggregateFnV2
from ray.data.block import BlockAccessor, Block
from typing import List, Tuple, Optional
from ray.data import Dataset

datavudeja

from hashlib import md5
import pandas as pd
from typing import Optional, Iterable

def get_md5_from_series(input_iterable: Iterable) -> str:
    """
    Create a MD5 hash from an Iterable, typically a row from a Pandas ``DataFrame``, but can be any
    Iterable object instance such as a list, tuple or Pandas ``Series``.
    
    Args: