proftmb: 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/proftmb - from package: proftmb

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

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