Solve the "Allow" button in System Preferences does not work issue

If it doesn't work using the mouse, then use the keyboard to enter the "Allow" button. Change to "All controls", see below pic.

Then, use Tab to navigate to "Allow" button, press "Space". Done.

Surface book tips

Screen brightness up: Fn + DEL
Screen brightness down: Fn + BACKSPACE

Git tips

Syncing a fork:
Sync a fork of a repository to keep it up-to-date with the upstream repository.

1. git fetch upstream
2. git checkout master
3. git merge upstream/master
4. git push origin master 
5. git checkout home (home is a branch)
6. git rebase master
7. git push origin home

ref: https://help.github.com/articles/syncing-a-fork/


Sync branch:
git fetch --prune

Update a PR:

1. git reset --hard  (optional)
   Did my changes in code I wanted to do
2. git add
3. git commit --amend
4. git push -f origin 

Cache the password in Git:
git config --global credential.helper cache

ref: https://help.github.com/articles/caching-your-github-password-in-git/#platform-linux

Create a new branch:
git checkout -b office master

Count:
git rev-list --count HEAD --since="March 20 2020"              
git rev-list --count HEAD --since="February 20 2020" --before="March 20 2020"

Create alias:
git config --global alias.co checkout
git config --global alias.st status

Move file to untracked file:
git rm welcome.html --cached

Finish and delete branch:

1. git branch -D fcrepo-xxxx
2. git push origin :fcrepo-xxxx

Pull a PR:

1. Get the PR changes into the test branch:> git fetch origin pull/1485/head:test
2. Create a test branch to merge the PR into locally. Assuming you're on the master branch:
   > git checkout test

Change the URI (URL) for a remote Git repository

git remote set-url origin NEWURL

Show remote URI 

git config --get remote.origin.url

Delete all commit history

1. Checkout
   git checkout --orphan latest_branch
2. Add all the files
   git add -A
3. Commit the changes
   git commit -am "commit message"
4. Delete the branch
   git branch -D master
5. Rename the current branch to master
   git branch -m master
6. Finally, force update your repository
   git push -f origin master

Show watchers and stargazers URI 

• https://github.com/[user]/[repo]/watchers
• https://github.com/[user]/[repo]/stargazers

Search the latest commit

• git log --graph --all --format=format:'%h - (%ai) %s — %cn %d' --abbrev-commit --date=relative -1
  
  Output: 6080b81 - (2017-11-14 21:41:39 +0000) run characterization on ingested file — Name  (branch name)

• 6080b81 is the commit #

Find branch name by commit #

• git branch --all --contains  6080b81

Sync a branch with master

1. git checkout test
2. git rebase master
3. git push origin +test

Your branch is based on 'origin/master', but the upstream is gone.

1. git remote add origin giturl
2. git push -u origin master

.gitignore template: https://github.com/github/gitignore

Remove previous gitignore files:

git clean -fX

Delete a branch
git branch -D dev
git push origin :dev

Rename a branch
git branch -m old_branch new_branch         # Rename branch locally 
git push origin :old_branch                 # Delete the old branch 
git push --set-upstream origin new_branch   # Push the new branch, set local branch to track the new remote

Squash commit:

$ git rebase -i HEAD~4
or
$ git rebase -i 97c9d7d
1 r 01cc5a08 Removes open div
2 s a2b6eecf Restores old fonts
3 s 603479ff Cleans left out div

$ git push origin branch-name --force

# Edit last commit message, before pushing, by using
$ git commit --amend

Cheatsheet: https://gist.github.com/davfre/8313299