add graph content

Reviewed-on: #1

GIT_ASSIGNMENT.md

@@ -128,6 +128,47 @@
 
 ---
 
+## 📜 Step 14: Viewing File History
+
+📖 _Checked the history of changes for a specific file using_ `git log filename`.
+
+![File history](filehistory.png)
+
+✅ Shows all commits that modified the file, with author, date, and commit messages.
+
+---
+
+## 🕵️ Step 15: Git Blame
+
+🔎 _Tracked who last modified each line of a file using_ `git blame filename`.
+
+![Git blame](blame.png)
+
+📌 Useful to identify responsibility for specific lines.
+
+---
+
+## 🔀 Step 16: Git Merge
+
+🔗 _Merged changes from one branch into another using_ `git merge branchname`.
+
+![Git merge](merge.png)
+
+📌 Helps integrate changes from different branches into the main branch.
+
+---
+
+## 🌐 Step 17: Git Log (All, Oneline Graph)
+
+📊 _Viewed a compact, visual history of all commits across branches using_  
+`git log --oneline --graph --all`.
+
+![Git graph all](graphall.png)
+
+📌 Great for visualizing the entire project history at a glance.
+
+---
+
 # ✨ Wrap-Up Notes
 
 1. ✅ **Git Version Check** – Confirmed installation.
@@ -141,7 +182,41 @@
 9. ✅ **Git Pull** – Synced changes from remote.
 10. ✅ **Git Remote** – Checked repository connections.
 11. ✅ **Git Ignore** – Excluded unnecessary files.
+12. ✅ **Git File History & Blame** – Tracked changes and contributors line by line.
+13. ✅ **Git Merge** – Combined branch histories.
+14. ✅ **Git Graph (all, oneline)** – Visualized all commits and branches.
 
 ---
 
-💡 _Git isn’t just a tool — it’s a time machine for your code!_ 🚀
+# ❓ Questions & Answers
+
+### 🔢 How many commits modified this file?
+
+**Ans:** `1`
+
+---
+
+### 🧩 What differences do you see when adding the `-p` option?
+
+**Ans:**
+
+- Without `-p` → Only commit metadata (hash, author, date, message).
+- With `-p` → Shows the actual diff (patch), i.e., the lines added (`+`) or removed (`-`) in each commit.
+
+---
+
+### 👤 Who changed each line of the file?
+
+**Ans:** `vipinraj01`
+
+---
+
+### 📏 How does `-L` help when the file is large?
+
+**Ans:** It limits the log output to specific lines, e.g., shows commit history only for **lines 20–40** of the file.
+
+---
+
+### 📧 What extra information does `-e` provide?
+
+**Ans:** It shows the **author’s email address** alongside their name, useful when multiple contributors have the same display name.

README.md

@@ -0,0 +1,7 @@
+<!-- @format -->
+
+Git is case-sensitive → it sees readme.md and README.md as different files.
+
+Windows/macOS are case-insensitive → they treat both names as the same file.
+
+So when you rename only the case, the OS says "nothing changed," and Git doesn’t record it.