fflas-ffpack-config: 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/fflas-ffpack-config - from package: fflas-ffpack

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

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