add page

changeGitHistroy.md

@@ -0,0 +1,33 @@
+# How to change the History of a git repo
+
+This is usefull if you want to permanently delete something form a git repo
+(attackers can clone the repo and revert commits which deleted files). This
+Methode rewirtes the git History
+
+Step1:
+clone repo again (you might break stuff)
+
+Step2:
+install git-filter-repo
+```
+sudo pacman -S git-filter-repo
+```
+
+Step3:
+use git-filter-repo to delete files
+
+```
+git filter-repo --invert-paths --path <path to the file or directory>
+```
+
+Step4:
+add origin again
+```
+git remote add origin <link to repo>
+```
+
+Step5:
+force push
+```
+git push origin --force --all
+```