cloudy: 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/cloudy - from package: cloudy

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

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