which line of configuration got changed

[Alicelinux]

we noticed that one config file in /etc/ got changed, but this configuration files got more than 20 lines, we don't know which portion is changed, and we don't have the old file to do comparision, in red hat linux, do we have some command to check file change history with detail? thanks

 

[atanere]

in red hat linux

You might benefit greatly from this e-book (PDF): Red Hat Linux System Administrator's Guide

Good luck!

 

[Alicelinux]

I have read the book, but there is no command for that, anyone knows?

 

[Rob]

Hello Alicelinux - unfortunately, unless you have some kind of version control installed, and don't have a backup of the file, you won't be able to see which lines changed.

What is the file that has changed? Is this a default file that you can check against a new installation of RHEL?

Rob