fiu-run: 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/fiu-run - from package: fiu-utils

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

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