ww

#!/bin/bash
# Usage: ww -f "window class filter" -c "run if not found"
# Usage: ww -fa "window title filter" -c "run if not found"

## Find and contribute to a more updated version https://github.com/academo/ww-run-raise

POSITIONAL=()
while [[ $# -gt 0 ]]; do
  key="$1"

  case $key in
  -c | --command)
    COMMAND="$2"
    shift # past argument
    shift # past value
    ;;
  -f | --filter)
    FILTERBY="$2"
    shift # past argument
    shift # past value
    ;;
  -fa | --filter-alternative)
    FILTERALT="$2"
    shift # past argument
    shift # past value
    ;;
  *)                   # unknown option
    POSITIONAL+=("$1") # save it in an array for later
    shift              # past argument
    ;;
  esac
done

set -- "${POSITIONAL[@]}" # restore positional parameters

SCRIPT_CLASS_NAME=$(
  cat <<EOF
function kwinactivateclient(targetApp) {
  var clients = workspace.clientList();
  for (var i=0; i<clients.length; i++) {
    client = clients[i];
    if (client.resourceClass == targetApp){
      workspace.activeClient = client;
      break;
    }
  }
}
kwinactivateclient('REPLACE_ME');
EOF
)

SCRIPT_CAPTION=$(
  cat <<EOF
function kwinactivateclient(targetApp) {
  var clients = workspace.clientList();
  for (var i=0; i<clients.length; i++) {
    client = clients[i];
    if (client.caption == targetApp){
      workspace.activeClient = client;
      break;
    }
  }
}
kwinactivateclient('REPLACE_ME');
EOF
)

CURRENT_SCRIPT_NAME=$(basename $0)

# ensure the script file exists
function ensure_script {
  if [ ! -f SCRIPT_PATH ]; then
    if [ ! -d "$SCRIPT_FOLDER" ]; then
      mkdir -p "$SCRIPT_FOLDER"
    fi
    if [ "$1" == "class" ]; then
      SCRIPT_CONTENT=${SCRIPT_CLASS_NAME/REPLACE_ME/$2}
    else
      SCRIPT_CONTENT=${SCRIPT_CAPTION/REPLACE_ME/$2}
    fi
    echo "$SCRIPT_CONTENT" >"$SCRIPT_PATH"
  fi
}

if [ -z "$FILTERBY" ] && [ -z "$FILTERALT" ]; then
  echo You need to specify a window filter. Either by class -f or by title -fa
  exit 1
fi

IS_RUNNING=$(pgrep -o -a -f "$COMMAND" | grep -v "$CURRENT_SCRIPT_NAME")

if [ -n "$IS_RUNNING" ] || [ -n "$FILTERALT" ]; then
  SCRIPT_FOLDER="$HOME/.wwscripts/"
  SCRIPT_NAME=$(echo "$FILTERBY$FILTERALT" | md5sum | head -c 32)
  SCRIPT_PATH="$SCRIPT_FOLDER$SCRIPT_NAME"
  if [ -n "$FILTERBY" ]; then
    ensure_script class $FILTERBY
  else
    ensure_script caption $FILTERALT
  fi
  #SCRIPT_NAME="ww$RANDOM"
  SCRIPT_NAME=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
  # install the script
  ID=$(dbus-send --session --dest=org.kde.KWin --print-reply=literal /Scripting org.kde.kwin.Scripting.loadScript "string:$SCRIPT_PATH" "string:$SCRIPT_NAME" | awk '{print $2}')
  # run it
  dbus-send --session --dest=org.kde.KWin --print-reply=literal "/$ID" org.kde.kwin.Scripting.run
  dbus-send --session --dest=org.kde.KWin --print-reply=literal "/$ID" org.kde.kwin.Script.run
  # stop it
  dbus-send --session --dest=org.kde.KWin --print-reply=literal "/$ID" org.kde.kwin.Scripting.stop
  dbus-send --session --dest=org.kde.KWin --print-reply=literal "/$ID" org.kde.kwin.Script.stop
  # uninstall it
  dbus-send --session --dest=org.kde.KWin --print-reply=literal /Scripting org.kde.kwin.Scripting.unloadScript "string:$SCRIPT_NAME"
elif [ -n "$COMMAND" ]; then
  $COMMAND &
fi

Maybe they changed it in KDE, I too do not know.