ubiformat: 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/ubiformat - from package: mtd-utils

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

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