aecat: 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/aecat - from package: aewan

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

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