quotatool: 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/sbin/quotatool - from package: quotatool

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

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