SSL Certificate Using Let's Encrypt for Ubuntu

Automated creation, renewing of certificates is provided by software called certbot.

To view a list of the certificates Certbot knows about, run the certificates subcommand:

$> certbot certificates

Deleting certificates

$> certbot delete --cert-name example.com

Install Certificates Using Apache

Git Management

Technologies: 

Associating your local repo to a repo in third party Git repository, say Bitbucket.

Step 1: Switch to your repository's directory

cd /path/to/your/repo

Step 2: Connect your existing repository to Bitbucket

Server Certification

Technologies: 

Checking Passphrase for private key:  openssl rsa -check -in keyfilename
Changing Passphrase: openssl rsa -des3 -in keyfilename -out newkeyfilename

Installing or trusting certificates:
Extensions .crt, .pem and .cer are interchangeable, just change the file name extension, they have the same form. Try this:

sudo cp mycert.cer /usr/share/ca-certificates/mycert.pem
sudo dpkg-reconfigure ca-certificates
sudo update-ca-certificates

Getting the RSA public and private key from conf file.

Actions in Views Bulk Operations

Views Bulk Operations come handy when doing bulk operations over a selected list. This is great because it combines the power of views to filter the selection and specific actions to do on each selected entity. For Ex: Updating some field in the record, deleting selected entity and so on.

Views also provide an easier way to define your own set of custom functions to perform on each selected row of entities.

First, we need to define an action :