bpcounter: 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/bpcounter - from package: ion

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

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