rhino: 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 CentOS possible default full paths are:

/sbin/rhino - from package: nut
/usr/bin/rhino - from package: rhino

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/rhino - from package: rhino

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

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