findfiles: 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/findfiles - from package: pythoncard-tools

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