iog: 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/iog - from package: iog

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

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