euform-describe-stack-events: 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 CentOS possible default full paths are:

/usr/bin/euform-describe-stack-events - from package: euca2ools

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/euform-describe-stack-events - from package: euca2ools

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