clufindhostname: 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/sbin/clufindhostname - from package: rgmanager

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

On Debian possible default full paths are:

/usr/sbin/clufindhostname - from package: rgmanager

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

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