aulast: 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 CentOS possible default full paths are:

/usr/bin/aulast - from package: audit

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/aulast - from package: auditd

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

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