pickle-cnf.py: 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/sbin/pickle-cnf.py - from package: pyca

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

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