ocproxy: 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/ocproxy - from package: ocproxy

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