dighosts: 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/dighosts - from package: 3proxy

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

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