ausyscall: 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/ausyscall - from package: audit

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

On Debian possible default full paths are:

/usr/bin/ausyscall - from package: auditd

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

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