dxf2vrml: 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/dxf2vrml - from package: dime

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

Error in other languages:
dxf2vrml: bevel nie gevind nie
dxf2vrml: comandă negăsită
dxf2vrml: comando não encontrado
dxf2vrml: commande introuvable
dxf2vrml: command not found
dxf2vrml: käsku ei ole
dxf2vrml: không tìm thấy lệnh
dxf2vrml: komanda nerasta
dxf2vrml: Kommando nicht gefunden.
dxf2vrml: kommandot finns inte
dxf2vrml: komut yok
dxf2vrml: nie znaleziono polecenia
dxf2vrml: níor aimsíodh an t-ordú
dxf2vrml: no se encontró la orden
dxf2vrml: no s'ha trobat l'ordre
dxf2vrml: opdracht niet gevonden
dxf2vrml: parancs nem található
dxf2vrml: perintah tidak ditemukan
dxf2vrml: príkaz nenájdený
dxf2vrml: příkaz nenalezen
dxf2vrml: команда не найдена
dxf2vrml: командата не е открита
dxf2vrml: 命令找不到
dxf2vrml: コマンドが見つかりません