lft: 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/lft - from package: lft

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

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