remctl: 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/remctl - from package: remctl

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

On Debian possible default full paths are:

/usr/bin/remctl - from package: remctl-client

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

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