wol-dhcpdconf: 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/wol-dhcpdconf - from package: wol

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

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