Delete completed Microsoft To Do tasks in all task lists

delete-completed-todos.ps1

Write-Output "Getting Microsoft To Do task lists ..."
$lists = m365 todo list list -o json | ConvertFrom-Json

Write-Output "Iterating Microsoft To Do task lists ..."
$lists | ForEach-Object { 
    $listId = $_.Id
    
    Write-Output "Getting completed tasks from '$($_.displayName)' task list ..."
    $tasks = m365 todo task list --listId $listId -o json --query '[?status==`completed`]' | ConvertFrom-Json
    Write-Output "$($tasks.Count) completed tasks found ..."

    $tasks | ForEach-Object {
        Write-Output "Removing '$($_.Title)' task ..."
        m365 todo task remove --listId $listId --id $_.Id --confirm
    }
}

Write-Output "Done"

delete-completed-todos.sh

#!/usr/bin/env bash
# -*- coding: utf-8 -*- 

echo "Getting Microsoft To Do task lists ..."
strListIds=`m365 todo list list --query '[].id'`
arrListIds=($strListIds)

echo "Iterating Microsoft To Do task lists ..."
for strlistId in "${arrListIds[@]}"; do
    echo "Getting completed tasks from '${strlistId}' task list ..."
    strTaskIds=$(m365 todo task list --listId "${strlistId}" --query '[?status==`completed`].id')
    arrTaskIds=($strTaskIds)
    strCount=${#arrTaskIds[@]}
    echo "${strCount} completed tasks found ..."    
    for strTaskId in "${arrTaskIds[@]}"; do
        echo "Removing '${strTaskId}' task ..."
        m365 todo task remove --listId "${strlistId}" --id "$strTaskId" --confirm
    done
done

echo "Done"