rastep: 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/rastep - from package: raster3d

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

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