azr3: 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/azr3 - from package: azr3-jack

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

Error in other languages:
azr3: bevel nie gevind nie
azr3: comandă negăsită
azr3: comando não encontrado
azr3: commande introuvable
azr3: command not found
azr3: käsku ei ole
azr3: không tìm thấy lệnh
azr3: komanda nerasta
azr3: Kommando nicht gefunden.
azr3: kommandot finns inte
azr3: komut yok
azr3: nie znaleziono polecenia
azr3: níor aimsíodh an t-ordú
azr3: no se encontró la orden
azr3: no s'ha trobat l'ordre
azr3: opdracht niet gevonden
azr3: parancs nem található
azr3: perintah tidak ditemukan
azr3: príkaz nenájdený
azr3: příkaz nenalezen
azr3: команда не найдена
azr3: командата не е открита
azr3: 命令找不到
azr3: コマンドが見つかりません