jack_property: 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/jack_property - from package: jackd1

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

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