Hello Drishti,
This is a great question. You are almost there!
There are a lot of ways to do this, but here is one method I've used before that uses only basic linux. It has three steps.
# set variables for input and output folder!
input=/full/file/path/to/beta/core-metrics-phylo
output=newoutputfolder
# Find the part of the name that changes and save it to a file.
cd $inputpath
ls *emperor.qzv > $output/filenames.txt
head $output/filenames.txt
# Loop through all filenames and export them.
while read i; do
echo exporting $i
qiime tools export ${i} --output-dir $output/${i}
done < $output/filenames.txt
Note that I use $i
twice; first to read in each file, second to write out each file to a new directory.
Let me know if this method works for you!
Colin