undertaker-tracecontrol-prepare-ubuntu: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/undertaker-tracecontrol-prepare-ubuntu - from package: undertaker

You may install the required package with command apt-get install {package}

Error in other languages:
undertaker-tracecontrol-prepare-ubuntu: bevel nie gevind nie
undertaker-tracecontrol-prepare-ubuntu: comandă negăsită
undertaker-tracecontrol-prepare-ubuntu: comando não encontrado
undertaker-tracecontrol-prepare-ubuntu: commande introuvable
undertaker-tracecontrol-prepare-ubuntu: command not found
undertaker-tracecontrol-prepare-ubuntu: käsku ei ole
undertaker-tracecontrol-prepare-ubuntu: không tìm thấy lệnh
undertaker-tracecontrol-prepare-ubuntu: komanda nerasta
undertaker-tracecontrol-prepare-ubuntu: Kommando nicht gefunden.
undertaker-tracecontrol-prepare-ubuntu: kommandot finns inte
undertaker-tracecontrol-prepare-ubuntu: komut yok
undertaker-tracecontrol-prepare-ubuntu: nie znaleziono polecenia
undertaker-tracecontrol-prepare-ubuntu: níor aimsíodh an t-ordú
undertaker-tracecontrol-prepare-ubuntu: no se encontró la orden
undertaker-tracecontrol-prepare-ubuntu: no s'ha trobat l'ordre
undertaker-tracecontrol-prepare-ubuntu: opdracht niet gevonden
undertaker-tracecontrol-prepare-ubuntu: parancs nem található
undertaker-tracecontrol-prepare-ubuntu: perintah tidak ditemukan
undertaker-tracecontrol-prepare-ubuntu: príkaz nenájdený
undertaker-tracecontrol-prepare-ubuntu: příkaz nenalezen
undertaker-tracecontrol-prepare-ubuntu: команда не найдена
undertaker-tracecontrol-prepare-ubuntu: командата не е открита
undertaker-tracecontrol-prepare-ubuntu: 命令找不到
undertaker-tracecontrol-prepare-ubuntu: コマンドが見つかりません