setterm: 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/setterm - from package: util-linux-ng

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

On Debian possible default full paths are:

/usr/bin/setterm - from package: util-linux

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

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