iptaccount: 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/iptaccount - from package: xtables-addons-common

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

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