poc-fec: 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/poc-fec - from package: poc-streamer

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