Adding rsync tutorial

tutorial/rsync.org

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+#+options: toc:nil num:nil author:nil
+
+** Copy multiple files, directories or disk using "rsync"
+
+The command accepts arguments:
+
+- "-r" recursive
+- "-v" verbose
+- "-a" archive (keeps info about files)
+
+First use the source, then the destination
+
+#+begin_src sh
+   rsync -rav /home/user/Documents /run/media/user/disk/backup/
+#+end_src
+
+~rsync~ can be also used with selective copyng based on file type
+
+#+begin_src sh
+  rsync /home/user/Desktop/*.jpg /home/user/Desktop/backupdata/
+#+end_src
+