aepromptcmd: command not found

Have You tried accessing the binary with the full path?

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/aepromptcmd - from package: aegis

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