From 3253837e6aacf40045da0ff0500f62bb0ad982d8 Mon Sep 17 00:00:00 2001
From: vincent <vincent@ducamps.win>
Date: Mon, 19 Apr 2021 13:31:57 +0200
Subject: [PATCH] update git

---
 IT/git/Git.md | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/IT/git/Git.md b/IT/git/Git.md
index 2ede974..661911c 100644
--- a/IT/git/Git.md
+++ b/IT/git/Git.md
@@ -23,8 +23,22 @@ this will ask if you want to add each modification with this option:
 ## delete a file from complete history
 
 be carefull can't push repo last time use
+need to be in a repo with no modification
 
-`git filter-branch --tree-filter 'rm -f passwords.txt' HEAD`
+```
+git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch $file" HEAD 
+rm -rf .git/refs/original/ && git reflog expire --all &&  git gc --aggressive --prune
+```
+
+## create a repo from other repo subfoler
+
+- clone the first repo
+- go in this directory
+- launch
+```
+git filter-branch --prune-empty --subdirectory-filter "subdirectory/path" master
+```
+- push in your new git repo
 
 ## changing email adress