rungetty: 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:

/sbin/rungetty - from package: rungetty

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

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