Subj : Re: Syntax
To : All
From : Nelgin
Date : Sun Mar 13 2022 04:36 pm
On Sun, 13 Mar 2022 14:17:45 -0400
"DesotoFireflite" <desotofireflite@VERT/VALHALLA> wrote:
> Re: Re: Syntax
> By: Nelgin to All on Sun Mar 13 2022 01:12 am
>
> Ne> On Mon, 7 Mar 2022 13:14:24 -0500
> Ne> "DesotoFireflite" <desotofireflite@VERT/VALHALLA> wrote:
> >> Re: Syntax
> >> By: Digital Man to DesotoFireflite on Mon Mar 07 2022 08:58 am
>
> > DM>> Re: Syntax
> > DM>> By: DesotoFireflite to All on Mon Mar 07 2022 08:41 am
>
> > >>> I want to be able to add to the top of a file, but I can only
> > >>> find out how to add to the bottom of a file. Currently I am
> > >>> using:
>
> > >>> fopen file 0_CREAT|0_WRONLY|O_APPEND
> > >>> "C:\SBBS\XTRN\INFO\INFO.LST"
>
>
> > >>> and that appends to the bottom of the list, but I want to show
> > >>> the newest to oldest, not oldest to newest.
>
> > >>> I'm assuming I just leave off the O_APPEND, but is there a
> > >>> correct way.
>
> > DM>> Leaving off O_APPEND will *overwrite* the portions of the file
> > DM>> you write to. There is no standard method for "inserting" data
> > DM>> into a file. You would have to read the file contents and
> > DM>> re-write them with the "inserted" data first, then the old
> > DM>> data.
> DM>
>
> >> Ok, Thanks, that was what I was afraid off... Looks like I have
> >> some work to do. <BFG>
>
> Ne> What are you trying to achieve? If part of the file changes,
> Ne> could you use an include to read in the bit that changes, and
> Ne> then just write your included file?
>
> It's just a graffiti wall I'm working on, but I wrote it to put the
> new info at the bottom, but now I've changed my mind and wan't the
> newest additions at the top. Thanks for the suggestion. I'm gonna
> play with it in a few days as soon as time let's me. I got side
> tracked working on another project. Again, Thanks
Use the tac command :)
$ echo "feck
> drink
> girls
> arse"|tac
arse
girls
drink
feck
Seriously, a couple of ways to do it but you can probably modify the
answer given to this question easily enough.
https://stackoverflow.com/questions/17560511/reading-a-file-line-by-line-backwards
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