ohdomainlist: 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/ohdomainlist - from package: openhpi32

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

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