tmfs: 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/tmfs - from package: tmfs

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

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