dwww-build-menu: 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/sbin/dwww-build-menu - from package: dwww

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