ivview: 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/ivview - from package: inventor-clients

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

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