hoteldruid-launcher: 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/hoteldruid-launcher - from package: hoteldruid

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

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