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Re: How do I trace changes in configuration files?

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Den 2019-05-01 kl. 13:29, skrev Dan Purgert:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Erik Josefsson wrote:
>> I'm trying to learn how to set up my two Teres laptops so that they are
>> identical.
>>
>> [...]
>>
>> I have tried to document my personal preferences before, but I have
>> always ended up with unreadable handwritten notes.
>>
>> This time I thought I should do it in a more systematic way by somehow
>> capture the difference between the default install and the result of my
>> (often irrational) efforts to make my machines look and feel like I want
>> it to.
>>
>> So, is there a way to trace/record/capture changes in all configuration
>> files?
>>
> There are as many as people reading this channel :)
>
> Probably the simplest (and, to some extent, most error prone) is to
> simply make copies, edit only the copies. For example:
>
>    cp orig.conf orig.conf.$(date +%y-%m-%d_%H%M%S)
>    vi orig.conf
>
> and then you'll end up with stuff like
>
>    orig.conf
>    orig.19-05-01_065356
>    orig.19-05-01_104022
>    (etc)
>
> Then just use 'diff' against any two files to see what changed between
> them.


Thanks Dan, I'll start with that method and maybe later I'll try Jonas' 
proposal with etckeeper and git.

But first, in which top level directories could files that change be 
located?

There are quite a few to choose from: bin, boot, dev, etc, home, lib, 
lib64, lost+found, media, mnt, opt, proc, root, run, sbin, srv, sys, 
tmp, usr and var.


>
> Or you can use a revision tool. I ran across "rcs" a few years ago, and
> while it's not something I always use, when I remember, it's pretty good
> at what it does.
>
> Either of these could be wrapped up in a little script --
>
>    #!/bin/bash
>    # 'rvi' - "revision-controlled" vi wrapper
>    # create a backup then edit the original file
>
>    cp -p "$1" "$1".$(date +%y-%m-%d_%H%M%S)
>    vi "$1"
>
>    ALTERNATE
>
>    #!/bin/bash
>    #'rvi' - revision control vi wrapper
>    # use the 'rcs' tool to checkout/checkin files
>
>    co -l "$1"
>    vi "$1"
>    ci -u "$1"
>
> Personally I like vi, but if you don't, replace it with whatever your
> editor of choice is.  The scripts probably have flaws that someone will
> point out soon (like calling it with no file, or multiple files, etc).
>
>> The idea is then to just replace the default configuration files with
>> the files where my preferences have been saved.
> As far as actually propagating changes, that gets a little more
> difficult -- but if all the config files are in $HOME/.config ... well,
> just use a cronjob to sync daily or something.


For now, I just want to see where (and if) my setup is stored (e.g. 
where does my wifi's SSID and passphrase end up? maybe in more than one 
place?).

Thanks for your help Dan!

//Erik

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Thread

How do I trace changes in configuration files? Erik Josefsson <erik.hjalmar.josefsson@gmail.com> - 2019-05-01 11:40 +0200
  Re: How do I trace changes in configuration files? Jonas Smedegaard <jonas@jones.dk> - 2019-05-01 13:00 +0200
  Re: How do I trace changes in configuration files? Dan Purgert <dan@djph.net> - 2019-05-01 13:40 +0200
    Re: How do I trace changes in configuration files? Erik Josefsson <erik.hjalmar.josefsson@gmail.com> - 2019-05-01 18:50 +0200
      Re: How do I trace changes in configuration files? Dan Purgert <dan@djph.net> - 2019-05-01 19:30 +0200
      Re: How do I trace changes in configuration files? Joe <joe@jretrading.com> - 2019-05-01 23:20 +0200
        Re: How do I trace changes in configuration files? Jude DaShiell <jdashiel@panix.com> - 2019-05-02 00:10 +0200
      Re: How do I trace changes in configuration files? David Wright <deblis@lionunicorn.co.uk> - 2019-05-02 05:30 +0200
        Re: How do I trace changes in configuration files? Dan Purgert <dan@djph.net> - 2019-05-02 13:10 +0200
        Re: How do I trace changes in configuration files? Lee <ler762@gmail.com> - 2019-05-02 18:20 +0200
          Re: How do I trace changes in configuration files? David Wright <deblis@lionunicorn.co.uk> - 2019-05-02 22:20 +0200
            Re: How do I trace changes in configuration files? Lee <ler762@gmail.com> - 2019-05-02 23:00 +0200
  Re: How do I trace changes in configuration files? Andy Smith <andy@strugglers.net> - 2019-05-02 12:10 +0200

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