Example: JavaScript batch process to clear user homes using the Alfresco Enhanced Script Environment and its batch processing capabilities. See https://github.com/AFaust/alfresco-enhanced-script-environment and https://github.com/AFaust/alfresco-enhanced-script-environment/wiki/Batch-Processing

clearUserHomesBatch.js

// character codes for 'a' to 'z'
var charCode = 97, max = 122;
    
// userProvider provides batches of users based on first name initial character
function userProvider()
{
    var results = [], initial;
    while(results.length === 0 && charCode <= max)
    {
        initial = String.fromCharCode(charCode++);
        results = people.getPeople('firstName:' + initial + '*');
    }
  
    return results;
}

// userHomeClearer removes all content from the user home of a person
function userHomeClearer(person)
{
    var userHomeRef, userHome, children, idx, max;
  
    // we know people only returns NodeRefs, not ScriptNode
    person = search.findNode(person.toString());
    userHomeRef = person.properties.homeFolder;
    userHome = userHomeRef !== undefined && userHomeRef !== null ? search.findNode(userHomeRef.toString()) : null;
    if(userHome !== null)
    {
        children = userHome.children;
        for(idx = 0, max = children.length; idx < max; idx++)
        {
            children[idx].remove();
        }
    }
}

// execute in up to 4 threads (if allowed by Repository) and process each person in individual batch run
executeBatch(userProvider, userHomeClearer, 4, 1);