aelock: 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/aelock - from package: aegis

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

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