pepper: 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/pepper - from package: pepper

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

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