pilprint.py: command not found

Have You tried accessing the binary with the full path?

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/pilprint.py - from package: python-pil

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