uuidcdef: 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/uuidcdef - from package: uuidcdef

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

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