lpf: 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/lpf - from package: lpr

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

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