aws_password: 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/aws_password - from package: libaws-bin

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

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