ftl_format: 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/ftl_format - from package: mtd-utils

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

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