can I get only the total of the current directory?

[tessus]

I'm often in a directory and want to see the total bytes within that dir, but dua lists every single file in the directory (and subdirs in case there are any).

To clarify my question (since my original post was too vague):

I want the total size of all files in the current dir (ignoring all subdirs recursively).

Is there a way to only see the total: xx.yy GiB total. I am asking because I was missing this option in du and hoped there was a way to do this with dua.

[Byron]

dua | tail -1 should do the trick.

[tessus]

Thanks, I am familiar with standard Unix behavior, but I hoped there was an option/argument (like du -d0 or du -s). The reason why I thought about an option was that with tail it still has to print all the output (to stdout, tail just discards everything but the last line). But maybe it's not such a big perf impact. I don't know the specifics of the code path, thus maybe it's really just the printing that is wasted.

Besides above reason, dua |tail -1 would still calculate everything (including the sub dirs). Maybe my question was not specfic enough, in which case I apologize.

I wanted only the total size of all files in the current dir (ignoring all subdirs recursively). I am asking because I was missing this option in du and hoped there was a way to do this with dua.

P.S.: I am unmarking this as the answer for now, because my question was misunderstood. I'll update the first post accordingly.

[Byron]

Right, thanks a lot for the clarification.
Indeed, there is no such mode, and for the non-interactive version it should be easy to add, without adding too much complexity.

It seems to be quite a niche application and I am not sure it belongs in dua proper, it's just a read-dir call with a sum after all.
Nowadays one could probably vibe a simple program for that in a minute, or add that feature to dua just like that.

[tessus]

for the non-interactive version it should be easy to add, without adding too much complexity.

I was thinking about the non-interactive version for this from the beginning.

It seems to be quite a niche application and I am not sure it belongs in dua proper, it's just a read-dir call with a sum after all.
Nowadays one could probably vibe a simple program for that in a minute, or add that feature to dua just like that.

This is probably true. I don't need it every single time I use dua, but when I do, I really miss that functionality. And yes, I could probably write a bash script to do that, but since dua is a tool for calculating usage, I thought it wouldn't hurt to have that in there either.

[tessus]

I really would love to see this in dua, but if you don't add it, here is a shell script I whipped up. Who knows, maybe someone finds it useful.

#!/usr/bin/env bash

# Calculate the size of files in current directory
# (without traversing into subdirectories)

if [[ -z $1 ]]; then
	DIR=.
else
	if [ -d "$1" ]; then
		DIR="$1"
	else
		echo "Error: not a directory"
		exit 1
	fi
fi

if [[ "$(uname -s)" == "Darwin" ]]; then
	OPT=-f%z
else
	OPT=-c%s
fi

OIFS="$IFS"
IFS=$(echo -en "\n\b")

DIR_SIZE_BYTES=$(
for i in `find $DIR -maxdepth 1 -type f`
do
	stat $OPT "$i"
done |paste -sd+ - |bc
)
IFS="$OIFS"

[[ -z $DIR_SIZE_BYTES ]] && DIR_SIZE_BYTES=0
DIR_SIZE=$DIR_SIZE_BYTES

UNITS='B KB MB GB TB PB EB'
N=0

while :
do
	let N++

	DIR_SIZE_INT=$(echo "$DIR_SIZE /1" |bc)
	[ $DIR_SIZE_INT -lt 1024 ] && break

	DIR_SIZE=$(echo "scale=2; $DIR_SIZE /1024" |bc)
done

UNIT=$(echo $UNITS |cut -d " " -f$N)
echo "$DIR_SIZE $UNIT"