For error:
Error: listen EADDRINUSE :::3042
We just need to kill whatever that’s on the port. Probably the last exit wasn’t clean. Do:
$ lsof -i :3042 // to find out the PID number $ kill -9 PID // kill the process with its PID
Category Archives: Tools
Gitbox Files Difference Comparison
On mac, the key “D” opens the FileMerge compare automatically.
Subscribe to Non-RSS Page
This is handy for following pages that don’t provide RSS access: Turn the page into RSS.
Cleaning Up Book Records Under Kindle Documents Folder
With the amount of documents that go in and out of my kindle, the documents folder is constantly left in a rumpled state–the book record *.sdr files scatter all over the place. I wonder why the kindle system can’t just delete the record file when the book is deleted?
Finally I decided that I’ve had enough of deleting and wrote a ruby script to deal with the mess.
Charles Won’t Work with Chrome
For one thing, Charles can’t be turned on before VPN. So closing VPN after turning on Charles won’t work either. Sometimes Charles doesn’t work with VPN at all.
The Best Way to Learn a New Language
First, if you already have another language under your belt, search “X Language for Y Language Developers”. If not, no worries, simply find out these things about the new language: