diff --git a/ClassRoster.md b/ClassRoster.md
index 0769fe6..6639c62 100644
--- a/ClassRoster.md
+++ b/ClassRoster.md
@@ -1,2 +1,3 @@
 # Class Roster
 - Michael Hilton (mhilton)
+- Seonghan Jo (seonghaj)
\ No newline at end of file
diff --git a/all_commands.txt b/all_commands.txt
new file mode 100644
index 0000000..06dc340
--- /dev/null
+++ b/all_commands.txt
@@ -0,0 +1,26 @@
+git clone https://github.com/cmu-crafting-software/Homework01.git
+cd Homework01/
+git branch seonghaj
+git checkout seonghaj
+git status
+git add ClassRoster.md 
+git commit -m "HW1_Seonghan"
+git push
+git push --set-upstream origin seonghaj
+git status
+git add .
+git commit -m "Creat student fact file"
+git branch new_seonghaj
+git checkout new_seonghaj
+git status
+git add student_facts.txt 
+git commit -m "wrote a fun fact about me"
+git checkout seonghaj
+git status
+git add student_facts.txt 
+git commit -m "append new sentence"
+git merge new_seonghaj
+#edit the conflicts
+git status
+git add .
+git commit -m "resolved conflicts"
\ No newline at end of file
diff --git a/student_facts.txt b/student_facts.txt
new file mode 100644
index 0000000..b300b92
--- /dev/null
+++ b/student_facts.txt
@@ -0,0 +1,3 @@
+2021 college of Engineering
+python-crafting software
+I played league of legend with my friends.
\ No newline at end of file