uacctd: 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/uacctd - from package: pmacct

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

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