povray: command not found

Have You tried accessing the binary with the full path?

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/povray - from package: povray
/var/lib/wims/public_html/bin/povray - from package: wims

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