euca-generate-environment-config: 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/euca-generate-environment-config - from package: euca2ools

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

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