在 bash 中使用通配符移动和备份多个目录

Question

The goal is to move multiple directories including its content to another directory while making in parallel a backup.

Input="/home/input/folder*/"
Output="/home/output/"
Backup="/home/backup/"

for folder in "$Input" ; do
    cp -rp "$folder" "$Backup" || { echo 'error backup'; exit; }
    cp -rp "$folder" "$Output" || { echo 'error move'; exit; }
    rm -rf "$folder"
done

I get following error message: cp: cannot stat '/home/input/folder*/': file or folder not found

Two questions:

• Why does the wildcard not work?
• Is there a more elegant way to do this task?

Answer 1

Compiling all your comments into an answer:

Input="/home/input/"folder*/
Output="/home/output/"
Backup="/home/backup/"

shopt -s nullglob

for folder in $Input ; do
    cp -rp "$folder" "$Backup" || { echo 'error backup'; exit; }
    cp -rp "$folder" "$Output" || { echo 'error move'; exit; }
    rm -rf "$folder"           || { echo 'error remove'; exit; }
done