freehdl-config: 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/freehdl-config - from package: freehdl

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

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