ifp: 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/ifp - from package: ifp-line-libifp

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

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