dump3d: 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 Debian possible default full paths are:

/usr/bin/dump3d - from package: survex

You may install the required package with command apt-get install {package}

Error in other languages:
dump3d: bevel nie gevind nie
dump3d: comandă negăsită
dump3d: comando não encontrado
dump3d: commande introuvable
dump3d: command not found
dump3d: käsku ei ole
dump3d: không tìm thấy lệnh
dump3d: komanda nerasta
dump3d: Kommando nicht gefunden.
dump3d: kommandot finns inte
dump3d: komut yok
dump3d: nie znaleziono polecenia
dump3d: níor aimsíodh an t-ordú
dump3d: no se encontró la orden
dump3d: no s'ha trobat l'ordre
dump3d: opdracht niet gevonden
dump3d: parancs nem található
dump3d: perintah tidak ditemukan
dump3d: príkaz nenájdený
dump3d: příkaz nenalezen
dump3d: команда не найдена
dump3d: командата не е открита
dump3d: 命令找不到
dump3d: コマンドが見つかりません