如何一步从另一个目录复制文件名并为其添加前缀？

Question

我想将多个文件从一个目录复制并重命名到另一个目录。特别是，我想要这样的东西：

/tmp/tmp.XXX/aaa.original.txt
/tmp/tmp.XXX/bb5.original.txt
/tmp/tmp.XXX/x2x.original.txt

复制到

/root/hello/dump-aaa.txt
/root/hello/dump-bb5.txt
/root/hello/dump-x2x.txt

我尝试过一些类似的方法，但不起作用：

• cp /tmp/tmp.XXX/*.original.txt /root/hello/*.txt
• find /tmp/tmp.XXX/ -name '*.original.txt' | xargs -i cp /root/hello/dump-{}.txt
• for f in /tmp/tmp.XXX/*.original.txt; do cp -- "$f" "/root/hello/dump-$f.txt"; done

通常上述代码的结果是错误:

cp: cannot create regular file '/root/hello/dump-/tmp/tmp.XXX/aaa.original.txt.txt': No such file or directory

Answer 1

bash解决方案：

for f in /tmp/tmp.XXX/*.original.txt; do 
    bn="${f##*/}"   # extracting file basename
    cp "$f" "/root/hello/dump-${bn%%.*}.txt"
done