Re: Sorting directories by size

[Kerin Millar]

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.

> 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