piond: 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/piond - from package: libpion-dev

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

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