In aix unix how to copy files/dirs without overwritting the old files

Posted on 2012-08-29
Medium Priority
Last Modified: 2012-09-11
I have 100 files/dirs in server A and 10 of those are in Server B. How can i copy over those 100 files/dirs without overwriting the 10 that already exist in Server B?

In essence need to copy just the 90 files/dirs of the 100 from server A to server B.
Question by:assistunix
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Expert Comment

ID: 38347080
use the -n switch to cp
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Assisted Solution

netcmh earned 400 total points
ID: 38347092
AIX should have it, if not try

cp –help

-n, –no-clobber do not overwrite an existing file (overrides a previous -i option)

Alternatively,  you can use rsync

rsync -r –ignore-existing bar/. foo/.
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Expert Comment

ID: 38347097
cp -i ... ...

will ask before overwriting, giving the opportunity to say "No".

If this is not an option "rsync" could be the tool of choice. It's available at http://www.perzl.org/aix
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LVL 21

Expert Comment

ID: 38347102
Just remembered something simple.

You could use the yes command

yes n | cp -R -h -i /dir1/* /dir2
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Accepted Solution

Tintin earned 1200 total points
ID: 38348082
The requirement is to copy files over the network, so cp won't work unless it's a NFS mounted directory or similar.

rsync is the best tool to use, eg:

rsync -av -ignore-existing /some/dir user@serverB:/dest/dir

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Author Comment

ID: 38366826
Thank you all for your responses- I tried using rsync, however syntax seems to be wrong for it, as it gives an error. Could you assist.

# rsync -av -ignore-existing /home/bin root@test:/home/bin

rsync: Failed to exec -existing: No such file or directory (2)
rsync error: error in IPC code (code 14) at pipe.c(84) [sender=3.0.6]
rsync: writefd_unbuffered failed to write 4 bytes to socket [sender]: Broken pipe (32)
rsync error: error in IPC code (code 14) at io.c(1525) [sender=3.0.6]
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Assisted Solution

woolmilkporc earned 400 total points
ID: 38366901

with two dashes!

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