Problems copying a file with cp -p filename in Linux

Posted on 2007-03-30
Last Modified: 2013-12-06
On the system are 2 users which want to preserve the file modification times of a file when copying this file from a develop system to the production system. Both systems are Linux.
Both users are member of the same group.
umask for the users is 0012
When I use cp -p file /mnt/remotemachine/remotedir/file
It gives an error :
cp: setting permissions for `/mnt/': Operation not permitted
Question by:howart
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LVL 14

Expert Comment

ID: 18822550
you are trying to copy a file through a samba share which is mounted to your /mnt some directory.

if you use NFS to share the directory and copy and paste files with permissions (assuming the uid and gid are same across machines) then it should work.

Author Comment

ID: 18822642
when the user is owner of the file on the remote system it works.

Author Comment

ID: 18822647
it is a NFS share and it doesn't work!
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LVL 34

Expert Comment

by:Duncan Roe
ID: 18827020
Only the owner of a file is allowed to change permissions. This applies to local filesystems & NFS.
However I am uncertain whether non_owner can change timestamps. Instead of using -p, try --preserve=timestamps to answer that.
Another approach: if the user has write access to the directory, he can delete the file and recreate it. Then all attributes may be preserved, including owner.
LVL 34

Accepted Solution

Duncan Roe earned 500 total points
ID: 18827037
--remove-destination will remove the targety file before copying. This option and --preserve require a recent cp (since file-utils 4.1)

Author Comment

ID: 18834848
yep works.
Any ideas how i can achieve the same with Midnight Commander?

LVL 34

Expert Comment

by:Duncan Roe
ID: 18835113
Sorry, no.

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