| #!/usr/bin/env bash | |
| # | |
| # Usage: dev_signed_cert.sh HOSTNAME | |
| # | |
| # Creates a CA cert and then generates an SSL certificate signed by that CA for the | |
| # given hostname. | |
| # | |
| # After running this, add the generated dev_cert_ca.cert.pem to the trusted root | |
| # authorities in your browser / client system. | |
| # |
| package com.sahajamit.selenium.ws; | |
| import org.json.JSONObject; | |
| import org.openqa.selenium.WebDriver; | |
| import org.openqa.selenium.chrome.ChromeDriver; | |
| import org.openqa.selenium.logging.LogEntries; | |
| import org.openqa.selenium.logging.LogType; | |
| import org.openqa.selenium.logging.LoggingPreferences; | |
| import org.openqa.selenium.remote.CapabilityType; | |
| import org.openqa.selenium.remote.DesiredCapabilities; |
| # https://vt4help.service-now.com/kb_view_customer.do?sysparm_article=KB0010740#linux | |
| wget https://secure.nis.vt.edu/resources/downloads/pulse-8.2R5.i386.deb | |
| sudo dpkg –i pulse-8.2R5.i386.deb | |
| /usr/local/pulse/PulseClient.sh install_dependency_packages |
I believe Ubuntu 16.04 comes with PostgreSQL 9.5. Thats good for a start, but it is a matter of time before you have the need of a PostgreSQL 9.6 cluster. For me it was to import a PG backup from Heroku.
The procedure couldn't have been any easier and is described below. If you are interested in upgrading your old cluster to 9.6 afterwards, you may be interested in this.
| Below are the Big O performance of common functions of different Java Collections. | |
| List | Add | Remove | Get | Contains | Next | Data Structure | |
| ---------------------|------|--------|------|----------|------|--------------- | |
| ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array | |
| LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List | |
| CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array | |
| curl --include \ | |
| --no-buffer \ | |
| --header "Connection: Upgrade" \ | |
| --header "Upgrade: websocket" \ | |
| --header "Host: example.com:80" \ | |
| --header "Origin: http://example.com:80" \ | |
| --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \ | |
| --header "Sec-WebSocket-Version: 13" \ | |
| http://example.com:80/ |
| # see https://www.topbug.net/blog/2013/04/14/install-and-use-gnu-command-line-tools-in-mac-os-x/ | |
| # core | |
| brew install coreutils | |
| # key commands | |
| brew install binutils | |
| brew install diffutils | |
| brew install ed --default-names | |
| brew install findutils --with-default-names |
| 1. Install nodejs. https://nodejs.org/en/ | |
| 2. Check npm (node package manager) is installed via command prompt: | |
| $ npm | |
| 3. Install gulp: | |
| $ npm install gulp --global | |
| 4. In relevant project folder, create 'gulpfile.js': |
| <body style="width:500px; height:500px;"> | |
| <video controls></video> | |
| <script src="index.js"></script> | |
| </body> |
| package com.alkhodiry.mb.rest.filters; | |
| import java.io.IOException; | |
| import javax.servlet.FilterChain; | |
| import javax.servlet.ServletException; | |
| import javax.servlet.http.HttpServletRequest; | |
| import javax.servlet.http.HttpServletResponse; | |
| import org.apache.commons.logging.Log; |