Does rsync completely overwrite files that have different timestamps?

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I've used a command similar to this to rsync files from macOS to Linux:



rsync -avz <ip-address>:/Backup/ Backup/


The folder Backup/ has been previously copied from the same machine using scp. I thought that rsync would only transfer the files that have changed, but it started to overwrite all files (probably, because of different timestamps), causing a lot of disk writes. I've tried the same command with --size-only and it finished almost instantly. Does rsync completely overwrite the files that have different timestamps (i.e. not checking the difference)? Does it depend on the size of the files?






linux osx rsync






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    up vote
    0
    down vote

    favorite












    I've used a command similar to this to rsync files from macOS to Linux:



    rsync -avz <ip-address>:/Backup/ Backup/


    The folder Backup/ has been previously copied from the same machine using scp. I thought that rsync would only transfer the files that have changed, but it started to overwrite all files (probably, because of different timestamps), causing a lot of disk writes. I've tried the same command with --size-only and it finished almost instantly. Does rsync completely overwrite the files that have different timestamps (i.e. not checking the difference)? Does it depend on the size of the files?






    linux osx rsync






    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I've used a command similar to this to rsync files from macOS to Linux:



      rsync -avz <ip-address>:/Backup/ Backup/


      The folder Backup/ has been previously copied from the same machine using scp. I thought that rsync would only transfer the files that have changed, but it started to overwrite all files (probably, because of different timestamps), causing a lot of disk writes. I've tried the same command with --size-only and it finished almost instantly. Does rsync completely overwrite the files that have different timestamps (i.e. not checking the difference)? Does it depend on the size of the files?






      linux osx rsync






      share













      I've used a command similar to this to rsync files from macOS to Linux:



      rsync -avz <ip-address>:/Backup/ Backup/


      The folder Backup/ has been previously copied from the same machine using scp. I thought that rsync would only transfer the files that have changed, but it started to overwrite all files (probably, because of different timestamps), causing a lot of disk writes. I've tried the same command with --size-only and it finished almost instantly. Does rsync completely overwrite the files that have different timestamps (i.e. not checking the difference)? Does it depend on the size of the files?






      linux osx rsync




      linux osx rsync





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      asked 1 min ago









      Eugene Yarmash

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