poc-3119: 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-3119 - from package: poc-streamer

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

Error in other languages:
poc-3119: bevel nie gevind nie
poc-3119: comandă negăsită
poc-3119: comando não encontrado
poc-3119: commande introuvable
poc-3119: command not found
poc-3119: käsku ei ole
poc-3119: không tìm thấy lệnh
poc-3119: komanda nerasta
poc-3119: Kommando nicht gefunden.
poc-3119: kommandot finns inte
poc-3119: komut yok
poc-3119: nie znaleziono polecenia
poc-3119: níor aimsíodh an t-ordú
poc-3119: no se encontró la orden
poc-3119: no s'ha trobat l'ordre
poc-3119: opdracht niet gevonden
poc-3119: parancs nem található
poc-3119: perintah tidak ditemukan
poc-3119: príkaz nenájdený
poc-3119: příkaz nenalezen
poc-3119: команда не найдена
poc-3119: командата не е открита
poc-3119: 命令找不到
poc-3119: コマンドが見つかりません