Lossless file command ?

[Laurent PETIT]

Hello, 

Is there an alternate to the file command that would prevent overriding a file on a server (and then fail) if it detects that the file has been manually changed since the last play?

This could be helpful in a mixed environment where some people still have access to the server and may change some configuration without remembering to do the changes in Ansible config files.

I since that at least palletops has this feature, I guess it is doing so by keeping a hash somewhere on the server.

Regards,

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Laurent Petit

[Michael DeHaan]

The file command doesn't replace contents of files.

If you are thinking of copy, that parameter is force=no.

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[Laurent PETIT]

Yes, I meant the copy command. 

Does the force flag detect whether the remote file has been modified externally ? I thought it was just a flag working in a binary way: copy the file the first time, and do not copy again if present (with no check on the content). Which is not the behavior I was describing. 

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[Brian Coca]

I use xattr command to keep md5sum of the files I copy, then compare it on the current file, this lets me detect when it was changed externally.

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Brian Coca
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[Laurent PETIT]

Thanks for the answer Brian. 

So there's no built-in support. I can live with that, just wanted to check I hadn't overlooked the obvious. 

Cheers

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[Michael DeHaan]

The copy command does use the md5sum utility when possible to minimize copying.

This is not always possible under sudo.

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