nepsilon

How to change your commit messages in Git?

At some point you’ll find yourself in a situation where you need edit a commit message. That commit might already be pushed or not, be the most recent or burried below 10 other commits, but fear not, git has your back 🙂.

Not pushed + most recent commit:

git commit --amend

This will open your $EDITOR and let you change the message. Continue with your usual git push origin master.

nepsilon

Speed is a feature: 10 tips for faster browser networking

1. Minimize TCP connections

Ensure the web server uses Keep-Alive headers.

2. Reduce DNS look-ups

DNS look-ups are the first thing blocking your HTTP requests.

peterdemartini

find `pwd` -type d -maxdepth 3 -name 'node_modules' | xargs -n 1 tmutil addexclusion

nepsilon

How to split a file into smaller chunks?

You may want to upload a 100GB file over an unstable network, or feed your scripts smaller inputs to load in RAM. In both cases, just splitting your file into smaller chunks is an easy solution.

Great news is Unix/Linux systems have the split utility already installed. And using it is simple as pie:

Cut a binary file into chunks of X bytes:

split -b X bigfile.avi

nepsilon

How to update a GitHub forked repository?

So you hit "Fork" and now you have this repo copy on your Github account. Here is what to do to keep it up-to-date with the original repo.

1. Add the original repo as remote, here called upstream:

git remote add upstream https://github.com/author/repo.git

2. Fetch all the branches of that upstream remote:

rap2hpoutre

// ...

let webpack = require("webpack");
mix.webpackConfig({
    plugins: [
      // Choose the language you want to keep (Ex: "fr")
      new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, /fr/) 
    ]
});

nepsilon

3 Vim tips with external commands

Vim has this ! special character that will run any shell command without having to close it. Here are 3 ways I often use it:

1. Format a JSON blob:

:%!python -m json.tool

2. Count number of characters in a file:

nepsilon

How to rename a branch in Git?

Rename your local foo branch with bar:

git branch -m foo bar

Remember this will add the new branch with you push, but it won’t delete the old foo remote branch.

Add -f --mirror to rename the branch on the remote:

nepsilon

How to secure your site with HTTPS?

With HTTP everything is visible when traveling on the Internet. By generating an SSL certificate and configuring your webserver you can force browsers to use HTTPS. Here is how to proceed:

# 1. Install letsencrypt
sudo pip install letsencrypt

nepsilon

How to track large files (database, PSD, bin) in Git?

Sometimes you have PSD or a small-ish SQLite file you’d like to track with Git. The problem is Git is bad at tracking changes in big binary files by default. With Git Large File Storage (LFS) you can replace these large files with text pointers while storing the file contents on a remote server. Both GitHub and BitBucket support it. Here is how to get started:

1. Install Git LFS extension (Mac here):

brew install git-lfs