aereport: 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/aereport - from package: aegis

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

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