Batch Rename a file based of part of name of second file - bash

Question

I want to batch rename some file based of Part of Name of other files
let me explain my question with a example, I think its better in this way
I have some file with these name in a folder
sc_gen_08-bigfile4-0-data.txt
signal_1_1-bigfile8.1-0-data.txt
and these file in other folder
sc_gen_08-acaaf2d4180b743b7b642e8c875a9765-1-data.txt
signal_1_1-dacaaf280b743b7b642e8c875a9765-4-data.txt
I want to batch rename first files to name of second files, how can I do this? also file in both first and second folder have common in name
name(common in file in both folder)-[only this part is diffrent in each file]-data.txt
Thanks (sorry if its not a good question for everyone, but its a question for me)

Answer 1

Let's name the original folder as "folder1" and the other folder as "folder2". Then would you please try the following:
#!/bin/bash
folder1="folder1" # the original folder name
folder2="folder2" # the other folder name
declare -A map # create an associative array
for f in "$folder2"/*-data.txt; do # find files in the "other folder"
f=${f##*/} # remove directory name
common=${f%%-*} # extract the common substring
map[$common]=$f # associate common name with full filename
done
for f in "$folder1"/*-data.txt; do # find files in the original folder
f=${f##*/} # remove directory name
common=${f%%-*} # extract the common substring
mv -- "$folder1/$f" "$folder1/${map[$common]}"
# rename the file based on the value in map
done

Answer 2

If your files are all called as you mentioned. I have created the next script.
It is located following the next structure.
root#vm:~/test# ll
folder1/
folder2/
script.sh
The script is the next:
#Declare folders
folder1=./folder1
folder2=./folder2
#Create new folder if it does not exist
if [ ! -d ./new ]; then
mkdir ./new;
fi
#Iterate over first directory
for file1 in folder1/*; do
#Iterate over second directory
for file2 in folder2/*; do
#Compare begining of each file, if they match, they will be copied.
if [[ $(basename $file1 | cut -f1 -d-) == $(basename $file2 | cut -f1 -d-) ]]; then
echo $(basename $file1) $(basename $file2) "Match"
cp folder1/$(basename $file1) new/$(basename $file2)
fi
done
done
It creates a folder called new and will copy all your files there. If you want to delete them, use mv instead. But I didn't want to use mv in the first attempt just in case to get some undesired effect.