bluetooth-sendto: 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/bin/bluetooth-sendto - from package: gnome-bluetooth

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

On Debian possible default full paths are:

/usr/bin/bluetooth-sendto - from package: gnome-bluetooth

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

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