bluetoothd: 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 CentOS possible default full paths are:

/usr/sbin/bluetoothd - from package: bluez

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/bluetoothd - from package: bluez

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

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