webdruid: 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
/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 Debian possible default full paths are:

/usr/bin/webdruid - from package: webdruid

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