bping: 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/bping - from package: ion

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

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