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How to list the pid which is listening a specific port on Mac

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By rokin - October 14, 2016

lsof -n -i TCP:xxxx | grep LISTEN

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Postgres import/export table from/to CSV file

By rokin - January 08, 2018

copy tablename to '/csv.txt' delimiter ',' csv header; copy (select * from tablename) to '/csv.txt' delimiter ',' csv header; copy tablename from '/csv.txt' delimiter ',' csv header;

Math in Vim search and replace

By Unknown - November 17, 2017

In Vim, you can use function or math in search and replace. 7100,111,222,0 7100,333,444,1 7100,555,666,2 :%s/$\d*$$/\=2-submatch(1)/g 7100,111,222,2 7100,333,444,1 7100,555,666,0

CEF Python

By rokin - April 07, 2017

Introduction CEF Python is a BSD-licensed open source project founded by Czarek Tomczak in 2012 and is based on Google Chromium and the CEF Framework projects. The Chromium project focuses mainly on Google Chrome application development, while CEF focuses on facilitating embedded browser use cases in third-party applications. Lots of applications use CEF control, there are more than 100 million CEF instances installed around the world. Examples of embedding Chrome browser are available for many popular GUI toolkits including: wxPython, PyGTK, PyQt, PySide, Kivy, Panda3D and PyGame/PyOpenGL. There are many use cases for CEF. You can embed a web browser control based on Chromium with great HTML 5 support. You can use it to create a HTML 5 based GUI in an application, this can act as a replacement for standard GUI toolkits such as wxWidgets, Qt or GTK. In such case to communicate between Python<>Javascript use javascript bind...