ocp: 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/ocp - from package: opencubicplayer

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

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