aewan: 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/aewan - from package: aewan

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