How to backtrack in Git

Git에서 수정사항을 되돌리는 방법에 대한 정리글입니다.

---

 

< head commit >

To see the most recently made commit.

 

• The Commit you are currently on is the HEAD commit.(in many case, the most recently made commit) 

 

ex)

$ git show HEAD
commit cc09c926c4db753354b5b66755dfaa25fecfbca8
Author: codecademy <ccuser@codecademy.com>
Date:   Mon Oct 18 02:44:16 2021 +0000

    Complete the ghosts line

diff --git a/scene-5.txt b/scene-5.txt
index b12dd97..5dd5d4e 100644
--- a/scene-5.txt
+++ b/scene-5.txt
@@ -12,3 +12,7 @@ Hamlet:
 I will.
 
 
+Ghost: 
+My hour is almost come,
+When I to sulphurous and tormenting flames
+Must render up myself.
\ No newline at end of file

 

---

< git checkout >

To restore the file in your working directory to look exactly as it did when you last made a commit.

 

$ git checkout HEAD <filename>

 

 

---

< git reset 1 >

To unstage the file from the staging area.

 

$ git reset HEAD <filename>

• It does not discard the file changes from the working directory, it just removes them from the staging area.

 

+.  If we want to go back by undoing the commit history

$ git reset HEAD^
$ git reset HEAD^1
$ git reset HEAD~1

 

---

< git reset 2 >

To Resets the HEAD to a previous commit in your commit history.

 

$ git reset <commit_SHA>

• This command works by using the first 7 characters of the SHA of a previous commit. For example,
  if the SHA of the previous commit is 5d692065cf51a2f50ea8e7b19b5a7ae512f633ba, use : 
  

  $ git reset 5d69206​