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|    alt.os.linux    |    Getting to be as bloated as Windows!    |    107,822 messages    |
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|    Message 106,354 of 107,822    |
|    J.O. Aho to alex    |
|    Re: patch a file with the patch command    |
|    05 Aug 24 12:43:14    |
      From: user@example.net              On 05/08/2024 09.35, alex wrote:       > Hello everyone.       >       > I'll show you my file structure right away       >       > ├── middle       > │ ├── orig       > │ └── revised       > └── orig       >       > I access the middle directory (the working dir)       >       > $ cd middle       >       > Let's examine the contents of the files       >       > $ cat orig       > ORIG       >       > $ cat ../orig       > ORIG       >       > $ cat revised       > REVISED       >       > Note that the contents of the orig and ../orig files are identical (the       > two files are identical), but that shouldn't be a big deal.       >       > Let's create the patches       >       > $ diff -u orig revised > patch-middle       > $ diff -u ../orig revised > patch-up       >       > Let's check the created files (the patches)       >       > $ cat patch-middle       > --- orig 2024-08-02 14:22:59.933683396 +0200       > +++ revised 2024-08-02 10:17:25.108469758 +0200       > @@ -1 +1 @@       > -ORIG       > +REVISED       >       > $ cat patch-up       > --- ../orig 2024-08-02 14:22:59.937683379 +0200       > +++ revised 2024-08-02 10:17:25.108469758 +0200       > @@ -1 +1 @@       > -ORIG       > +REVISED       >       > It looks ok.       >       > Note that for both files (orig and ../orig) the same revision file       > (revised) was used, but, again, this should not be a big deal.       >       > Applying the patches       >       > $ patch < patch-middle       > patching file orig       >       > $ patch < patch-up       > patching file orig       > Reversed (or previously applied) patch detected! Assume -R? [n]       > Apply anyway? [n] y       > Hunk #1 FAILED at 1.       > 1 out of 1 hunk FAILED -- saving rejects to file orig.rej       >       > As you can see with the patch-middle file everything works.       > While with the patch-up file there is something wrong (Hunk #1 FAILED at       > 1).       >       > Why?              You are trying to "move" the ../orig to revised, the revised file       already exists, so not allowed.              This not how you are supposed to do it, a proper way is to do              ├── src        ├── orgcopy        | ├── orig        ├── revisedcopy        ├── orig              cd src       diff -Nurb orgcopy revisedcopy > from_org_to_revised.patch       cd orgcopy       patch -p1 < ../from_org_to_revised.patch              say you made this change              ├── src        ├── orgcopy        | ├── orig        ├── revisedcopy        ├── revised              cd src       diff -Nurb orgcopy revisedcopy > from_org_to_revised.patch       cd orgcopy       patch -p1 < ../from_org_to_revised.patch              you would end up with                     ├── src        ├── orgcopy        | ├── revised        ├── revisedcopy        ├── revised              --        //Aho              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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