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Ubuntu backup

Summary the things that I should backup

1. hexo

2. nginx

3. code server settings?

4. OF backup

5. fail2ban

6. autorun services, check

Ubuntu initialization

Step 1. Update and upgrade the system

Step 2. Change the default password

Step 3. install R and conda

Step 4. install tinytex in R

Step 5. install code server

Step 6. nginx setup

Step 7. fail2ban setup

Step 8. OF setup

Step 9. hexo setup