tfrt: 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/tfrt - from package: tcm

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

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