apparmor_status: 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/apparmor_status - from package: apparmor

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

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