Sorting directories by size

[hancooper]

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, August 24, 2021 2:05 PM, Kerin Millar <kfm@plushkava.net> wrote:

> On 24/08/2021 14:46, hancooper wrote:
>
> > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > On Tuesday, August 24, 2021 1:35 PM, hancooper hancooper@protonmail.com 
> > wrote:
> >
> > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > > On Tuesday, August 24, 2021 12:52 PM, Alex fxmbsw7 Ratchev 
> > > fxmbsw7@gmail.com wrote:
> > >
> > > > i guess you didnt set $dir
> > > > On Tue, Aug 24, 2021, 14:12 hancooper hancooper@protonmail.com wrote:
> > > >
> > > > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > > > > On Tuesday, August 24, 2021 3:31 AM, Kerin Millar kfm@plushkava.net
> > > > > wrote:
> > > > >
> > > > > > On Tue, 24 Aug 2021 02:21:28 +0000
> > > > > > hancooper via help-bash@gnu.org wrote:
> > > > > >
> > > > > > > I have a directory stored in `dir`. I want to store the names of
> > > > > > > directories at a particular level
> > > > > >
> > > > > > > and sort them by size.
> > > > > > > I have started with listing the directory names in `dlc` and 
> > > > > > > computing
> > > > > > > the total number of
> > > > > >
> > > > > > > directories present. But still have to sort `dlc` by size, the 
> > > > > > > with
> > > > > > > the biggest first.
> > > > > >
> > > > > > > My initial plan is to use a command such as `du -h | sort -h`.
> > > > > > > daggr=( -mindepth "$depth" -maxdepth "$depth" )
> > > > > > > dlc=$( find "$dir" "${daggr[@]}" -type d | tr "\n" " " )
> > > > > > > ndr=$( echo "$dlc;" | grep -o " " | wc -l )
> > > > > >
> > > > > > The last two of these three commands should be jettisoned. Further, 
> > > > > > you
> > > > > > ought to be using an array to store the directory names. As you 
> > > > > > appear to
> > > > > > be using GNU, consider the following.
> > > > > > daggr=(-mindepth "$depth" -maxdepth "$depth")
> > > > > > mapfile -td '' dlc < <(find "$dir" "${daggr[@]}" -type d -exec du 
> > > > > > -0 {}
> > > > >
> > > > > -   | sort -zrn | cut -z -f2-)
> > > > >
> > > > > > ndr=${#dlc[@]}
> > > > > > This relies on the fact that GNU du(1), given the -0 option, 
> > > > > > employs an
> > > > > > output format of "%d\t%s\0", <size>, <pathname>.
> > > > > >
> > > > > > Kerin Millar
> > > > >
> > > > > I agree with your assessment. Have seen that I get the following errer
> > > > > find: ‘’: No such file or directory
> > >
> > > I would like to have the capability to print the directories with their 
> > > size,
> > > in the form of a table (size dir).
> >
> > Have used the following
> > sdr=$( find "$src" "${daggr[@]}" -type d -exec du {} + \
> > | sort -zrn )
> > echo "$sdr"
>
> That's not what I wrote. The above is broken in multiple ways. Not
> least, because du(1) no longer uses NUL as a line delimiter.

Have used what you wrote. But am also trying to do a print for users
as well.  Have removed the `-0` to keep the results in the form of a
table.

> > I am suspicious of the sorted results because I get
> > bash: warning: command substitution: ignored null byte in input
> > 17844 
> > ./01cuneus/articles/detailed/advoc/privasec--2018/privasec--2018--files
> > 18636 ./01cuneus/articles/detailed/advoc/privasec--2018
> > 40812 ./01cuneus/articles/detailed/advoc/eucd
> > 59452 ./01cuneus/articles/detailed/advoc
> > 4 
> > ./01cuneus/articles/detailed/infocs/geoinforma/2018--gsdcoll--esc/gsdcoll--esc--files
> > 34584 ./01cuneus/articles/detailed/infocs/geoinforma/2018--gsdcoll--esc
> > 35460 ./01cuneus/articles/detailed/infocs/geoinforma
> > 272 ./01cuneus/articles/detailed/infocs/informatic--files/tempora
> > 8348 ./01cuneus/articles/detailed/infocs/informatic--files
> > 132 ./01cuneus/articles/detailed/infocs/ntwrk--survl
> > 43944 ./01cuneus/articles/detailed/infocs
> > 4 ./01cuneus/articles/short/advoc/opendm/2019/q2
> > 8 ./01cuneus/articles/short/advoc/opendm/2019
> > 12 ./01cuneus/articles/short/advoc/opendm
>
> As above.
>
> > Finally, the display of the sorted list should show the size in
> > human readable form.
>
> So you're happy for the output lines of du(1) to be stored by an array,
> as opposed to just the pathnames? Very well.
>
> mapfile -td '' dlc < <(find "$dir" "${daggr[@]}" -type d -exec du -h0 {}
>
> -   | sort -zrh)
>
>     --
>     Kerin Millar
>

For the actual functionality I use only the array with the directory names.
But for display, I want the ability to show a table of sorted (size dirname).
With the size being printed in human readable form.  For the display part,
I do not need to store the information in an array.