在目录中移动多个文件可能有重复的文件名 [英] Moving multiple files in directory that might have duplicate file names

问题描述

谁能帮助我？

我想从我的USB映像复制到我的电脑上存档，我决定做一个bash脚本，使这个工作更容易。我想复制文件（即IMG_0101.JPG），如果已经有处理档案的名称（其中还会有，因为我擦我的相机，每次我用它）的文件应命名为IMG_0101.JPG.JPG这样的文件我不丢失文件。

  #method，然后
MV IMG_0101.JPG IMG_0101.JPG.JPG
否则MV IMG_0101路径/要/目的
 

解决方案

 在$源文件/ *;做
    的newfile =$ DEST/文件$
    而[-e$ newfile中];做
        的newfile = $ newfile.JPG
    DONE
    CP$文件，$的newfile
DONE
 

有一个竞争条件在这里（如果另一个进程可以用第一个完成和 CP ），但是这是相当的理论。

这不会是很难拿出一个不太原始更名的政策;也许替换 .JPG 在与越来越数字后缀结尾加上 .JPG ？

can anyone help me with this?

I am trying to copy images from my USB to an archive on my computer, I have decided to make a BASH script to make this job easier. I want to copy files(ie IMG_0101.JPG) and if there is already a file with that name in the archive (Which there will be as I wipe my camera everytime I use it) the file should be named IMG_0101.JPG.JPG so that I don't lose the file.

#method, then
mv IMG_0101.JPG IMG_0101.JPG.JPG
else mv IMG_0101 path/to/destination 

解决方案

for file in "$source"/*; do
    newfile="$dest"/"$file"
    while [ -e "$newfile" ]; do
        newfile=$newfile.JPG
    done
    cp "$file" "$newfile"
done

There is a race condition here (if another process could create a file by the same name between the first done and the cp) but that's fairly theoretical.

It would not be hard to come up with a less primitive renaming policy; perhaps replace .JPG at the end with an increasing numeric suffix plus .JPG?

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