VSCode Task to remove dead branches from localhost or remote

tasks.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Git Prune",
            "type": "shell",
            "command": "git fetch --prune && git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}' | xargs git branch -d",
            "problemMatcher": []
        }
    ]
}