poc-2250: 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/poc-2250 - from package: poc-streamer

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

Error in other languages:
poc-2250: bevel nie gevind nie
poc-2250: comandă negăsită
poc-2250: comando não encontrado
poc-2250: commande introuvable
poc-2250: command not found
poc-2250: käsku ei ole
poc-2250: không tìm thấy lệnh
poc-2250: komanda nerasta
poc-2250: Kommando nicht gefunden.
poc-2250: kommandot finns inte
poc-2250: komut yok
poc-2250: nie znaleziono polecenia
poc-2250: níor aimsíodh an t-ordú
poc-2250: no se encontró la orden
poc-2250: no s'ha trobat l'ordre
poc-2250: opdracht niet gevonden
poc-2250: parancs nem található
poc-2250: perintah tidak ditemukan
poc-2250: príkaz nenájdený
poc-2250: příkaz nenalezen
poc-2250: команда не найдена
poc-2250: командата не е открита
poc-2250: 命令找不到
poc-2250: コマンドが見つかりません