euwatch-delete-alarms: 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 CentOS possible default full paths are:

/usr/bin/euwatch-delete-alarms - from package: euca2ools

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

On Debian possible default full paths are:

/usr/bin/euwatch-delete-alarms - from package: euca2ools

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

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