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Linux replace all instances of a file

Posted on 2013-11-06
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Last Modified: 2013-11-10
How would you go about overwriting every instance of a file on a server, while maintaining owner and permissions?

For example: Say I have a file named --> file1.php

I want to overwrite every copy on my server of file1.php with my new copy. However, since I am using WHM/cPanel... Those files will all be under different user accounts. So I want to still maintain the same owners, and file permissions of the original file.

Any ideas? Assume it would have to be a shell script that retrieved the permissions of a file before it overwrote it?

Thanks
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Question by:kelvan
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6 Comments
 
LVL 35

Expert Comment

by:Duncan Roe
ID: 39628604
Yes it'd be a shell script. The way it would work would be to replace the contents of each file using cat instead of cp
for i in $(locate file1.php) ; cat newfile > $i; done

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Assumes you have installed the slocate package (for locate). Otherwise you could use say $(find / -name file1.php)
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LVL 35

Expert Comment

by:Duncan Roe
ID: 39628609
You'd have to run it as root, so test all the component parts first (especially the find or locate)
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LVL 35

Expert Comment

by:Duncan Roe
ID: 39628790
Oops! Forgot the do
for i in $(locate file1.php) ; do cat newfile > $i; done

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LVL 1

Author Comment

by:kelvan
ID: 39637370
Yeah I actually went a different route with a script that created a script with chown ad chmod commands in it after overwriting the files.
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LVL 1

Author Comment

by:kelvan
ID: 39637438
I've requested that this question be closed as follows:

Accepted answer: 0 points for kelvan's comment #a39637370

for the following reason:

Because the prior answer did not retain permissions and owners
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LVL 35

Accepted Solution

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Duncan Roe earned 2000 total points
ID: 39637439
The prior solution did retain permissions and owners. That is the whole reason to use cat to overwrite existing files.
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