keyczart: 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/keyczart - from package: python-keyczar

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