Machine time, operation, rewrite , log

gistfile1.sh

#/bin/bash

# Go back in time and apply some tests to
# obtain enough data to check project evolutions (QA, Perf, etc)

# i in range of desired days i.e: 0-70
for i in {0..70}
do
        # Change directory to targeted project
        cd ~/some/project/using/git
        
        # The date before
        OLD_DATE=$(date -d "-$i week" +"%Y-%m-%d")
        
        # The target commit to switch to
        COMMIT=$(git log -1 --before=$(date -d "-$i week" +"%Y-%m-%d") | grep commit | tr -d 'commit ' | cut -c 1-6)
        git checkout $COMMIT
        
        # Apply some operation
        run-script-against-project
        
        # Reset changes, 
        git reset --hard
        git branch
        git checkout master
        echo '======'$OLD_DATE'======'
done