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I have few big folders "cosmo_sim_9", "cosmo_sim_10".... in one of my external hard disk, and a old copy of this on another external hard disk. I want to Synchronize old directories with the new one(recursively), but without overwriting already existing files(for saving time). How can I do this this? My os is Fedora 20.
R S John
Posted 2014-08-21T22:05:37.430
Reputation: 113
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rsync is pretty much the default program to synchronize files between directories. Try a command along the lines of:
rsync -r --update --progress --dry-run
That will tell you what would be copied and what wouldn't. The --update command only copies files when the source is newer than the destination. If it looks correct, then take off the --dry-run option. If it's not right, check the man page for rsync to see what I did wrong.
Adam
Posted 2014-08-21T22:05:37.430
Reputation: 1 510
What operating system? – Adam – 2014-08-21T22:06:07.020
Sorry... I am using Fedora 20 – R S John – 2014-08-21T22:07:49.483
@RSJohn the dd command should do the trick. http://forums.fedoraforum.org/showthread.php?t=252973
– Ben Plont – 2014-08-21T22:17:17.453