aubiotrack: 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/aubiotrack - from package: aubio-tools

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

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