rods: 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/rods - from package: raster3d

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

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