git is a great way to track changes to text files.
Problem: I overwrote one of my scripts and I was able to track down the change and recover my lost code.
git whatchanged
I looked for recent commits that involved the overwritten file.
git diff c4d6ee5cdf4f170e27731999cac63191134e06c6
Replace c4d6ee5cdf4f170e27731999cac63191134e06c6 with the unique identifer
for the commit.
The diff shows patch style changes included in the commit. I found my lost code.
Problem: One optional folder in a repo is adding a large amount of size to an otherwise very small repository. Solution: Remove the folder and its history from the repo.
This is also userful if you accidentally add a password or sensitive information to a public repo.
Based on Mohsen, Mathias Bynens, knocte, and Lázaro Clapp from https://stackoverflow.com/questions/10067848
Note: Backup the folder into another repository first.
git clone http://github.com/technologyclassroom/dice-mechanic-sim
cd dice-mechanic-sim
git remote set-url origin git@github.com:TechnologyClassroom/dice-mechanic-sim.git
git rm -fr data
git add .
git commit -m "Remove data packs"
git push origin master
This deleted the folder, but the size of the repo stayed the same near 25mb. These commands pruned the history destructively:
git filter-branch --tree-filter 'rm -rf data' --prune-empty HEAD
git for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git update-ref -d
git commit -m 'Removing data from git history'
git gc
git push origin master --force
Now the repo is under 1mb.