openvrml-player: 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/openvrml-player - from package: openvrml-lookat

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

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