fiaif-scan: 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/fiaif-scan - from package: fiaif

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

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