feat: add rsync pastebin

posts/2023-07-01-pastebin.md

@@ -258,6 +258,27 @@ Run:
 instaloader +login.txt +args.txt +targets.txt
 ```
 
+## [rsync](https://github.com/WayneD/rsync)
+
+```sh
+# Result is dst/src
+rsync -azP src dst
+
+# Result is dst/* with * is from src
+rsync -azP src/ dst
+```
+
+Commonly flags:
+
+- `-z`: compress
+- `-P`: enable both `--partial`, `--progress` to easily resume after interupt
+- `-n`: dry run
+
+Be careful flags (need dry run if not sure):
+
+- `-u`: skip if files in **dst** is already newer than in **src**
+- `--delete`: delete files in **dst** if not exist in **src**
+
 ## [F2](https://github.com/ayoisaiah/f2)
 
 Rename: