acctdump: 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/bin/acctdump - from package: chiark-utils-bin

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

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