Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096
Author: Josef Jezek
# Install Inkscape on Ubuntu
sudo apt-get install inkscape
# 计算排列组合 | |
module LotMath | |
extend self | |
# 阶乘 | |
def F(n) | |
return 1 if n == 0 | |
(1..n).inject(:*) | |
end |
# | |
# Recurring Job using Delayed::Job | |
# | |
# Setup Your job the "plain-old" DJ (perform) way, include this module | |
# and Your handler will re-schedule itself every time it succeeds. | |
# | |
# Sample : | |
# | |
# class MyJob | |
# include Delayed::ScheduledJob |