ivfix: 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/ivfix - from package: inventor-clients

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

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