I want to do the following.

I want to copy from a remote FTP server every day certain files. This FTP directory is mounted. Every day a directory is created and within that directory I need 3 files of the 5


I want to copy every day the files with certain extensions to dir999

cp */*.img /dir999 

But will that copy every day all files again ? as its a lot i only want to do the changes.

  • Hi, i want this automated, so that i can do it in a crontab and every day download only the new files from the new directories that were created. – mamoman May 30 '17 at 6:57
  • Sounds like you are looking for rsync. There are dozens of questions like this here so you might want to examine them for a suitable duplicate rather than posting a new question. – tripleee May 30 '17 at 8:23

Many implementations of cp like FreeBSD, GNU and MacOS have an option -n to skip existing files. So with

cp -n */*.img /dir999

you will only copy new files. Note that changed files won't get updated in the destination directory. If you want this, you'd need a different solution.

  • stupid me, yes that is what i needed. Thank you. – mamoman May 30 '17 at 8:30
  • @mamoman there are no stupid people here :-) If this answer works for you please remember to accept it with the tick mark in the corner. – roaima May 30 '17 at 9:07

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