GNU bug report logs - #49428
RFE: for --time have option to only include contents, not dir itself.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: L A Walsh <coreutils <at> tlinx.org>
To: Coreutils <bug-coreutils <at> gnu.org>
Subject: RFE: for --time have option to only include contents, not dir itself.
Date: Mon, 05 Jul 2021 22:18:30 -0700

I did a re-install-in-place on windows that reset the
dirtimes on all the dirs to the date I did the re-inst.

As a partial recovery, I want to be able to reset the date
to the time of the last modified file in the dir.

I thought to use:

  du -s --time DIR

but it's not just showing (from manpage):

      --time show time of the last modification of any file in the 
directory,
             or any of its subdirectories

instead it is showing the above & the time on the dir itself.
Some people may want to include the dir time, but that's usually
obvious by the time on the directory.

Nevertheless, perhaps a "--contents" flag to not include
the size of the directory-inode itself might be useful?

Sadly --separate-dirs doesn't really separate out all
the dir-sizes either, but only subdirs.

*sigh*
tnx!

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: L A Walsh <coreutils <at> tlinx.org>
To: 49428 <at> debbugs.gnu.org, Coreutils <bug-coreutils <at> gnu.org>
Subject: Re: bug#49428: RFE: for --time have option to only include contents, 
 not dir itself.
Date: Mon, 05 Jul 2021 23:56:37 -0700

First stab at a script is really slow...

find dirs, then find all files in the dir:

There's gotta be a faster way...ug!

lastt=1
shopt -s lastpipe

find "$1" -depth -type d |
 while read dr;do
   t=$(find "$dr" -xdev -maxdepth 1 -mindepth 1 ! -name . -a ! -name .. 
-printf "%T@\n" |
       cut -d. -f1|sort -rn|head -1)
   if [[ ! $t ]]; then
     t=$lastt
   fi
   if [[ ! $t ]]; then
     echo "dir=$dr"; exit 1; fi
   #echo "touch -d \"@$t\" \"$dr\""
   touch -d "@$t" "$dr"
   lastt=$t
 done

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