drbl-gethostip: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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 Debian possible default full paths are:

/usr/share/drbl/bin/drbl-gethostip - from package: drbl

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