unafs: 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/unafs - from package: john

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

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