To move blocks of folders within a specific range in bash script - bash

Question

I have to handle something like 2775 folders, each of which contains some files. Each folder is named as conf+n, where n is a number that ranges from 1 to 2775 (e.g. conf1, ...conf250,...conf2775). I created some parent folders, named A10, A20...A100, A200,...A1000,A2000 etc. The problem is the following: I would like to move the first 100 folders, so conf1-conf100 to A100, conf101-con200 to A200 etc.
The problem is that the total number of folders (2775) is not fixed, since I would like my script to adapt for different ranges of folders.
In my trial script I create 250 conf# folders as well as 25 A# folders, but I got stucked in the process of moving the conf1-conf10 to A10, conf11-conf20 to A20 etc. I tried to create a iterative for loop for that, but it failed.
#!/bin/bash
for d in ./test_abc/
do (cd "$d" &&
for ((i=1;i<=250;i++))
do
mkdir $i
done);
done
while true; do
if [ "250" -le "500" ];
then
pfldrs=$((250 / 10))
echo -en '\n'
echo -e "\x1B[31m CREATING BLOCKS ...\x1B[0m \x1B[32m $op \x1B[0m"
echo -en '\n'
for d in ./test_abc/
do (cd "$d" &&
for ((k=1;k<=$pfldrs;k++))
do
m=$(($k*10))
mkdir A$m
done);
done
break
fi
done
I expect the A10 folder to contain folders conf1-con10, folderA20 to contain folders conf11-conf20, etc.
Thanks in advance for the help!

Answer 1

I just made a simple script, But I think there are better ideas.
move.sh
#!/bin/bash
source_dir=$1
target_dir=$2
interval=$3
total_dir=$(basename $(find $source_dir -type d -name "conf*" | sort -Vr | head -1) | sed "s/conf//g")
echo "total $total_dir interval $interval"
target=0
for i in $(seq 1 $total_dir); do
if [ $i -gt $target ]; then
target=$(($target + $interval))
mkdir $target_dir/A$target
fi
mv $source_dir/conf$i $target_dir/A$target/
done
run
./move.sh ${source_dir where conf* dirs are exist} ${target_dir where A* dirs will be created} ${interval}
ex) ./move.sh ./conf_dir ./move_dir 10