如何删除零字节文件 [英] How to remove zero byte files

问题描述

我有以下目录结构:-

foo/dir1/
foo/dir2/
foo/dir3/
foo/dir1/a.rb
foo/dir1/b.rb
foo/dir1/c.rb
foo/dir1/d.rb
foo/dir2/e.rb
foo/dir2/f.rb
foo/dir2/g.rb
foo/dir2/h.rb

如何从某个文件夹中删除零字节文件(dir1、dir2下的一些文件是零字节).如何查找和删除此类文件?

How to remove zero byte files from a certain folder (some of the files under dir1, dir2 are zero bytes). How do I find and remove such files?

推荐答案

假设您有一个与 POSIX 2008 兼容的 find 版本以支持 + 符号:

Assuming you have a version of find compliant enough with POSIX 2008 to support the + notation:

find foo -size 0 -exec rm -f {} +

如果你不这样做，你可以使用一些变体:

If you don't, there are variants you can use:

find foo -size 0 -print0 | xargs -0 rm -f   # But you probably have + anyway
find foo -size 0 -exec rm -f {} \;          # Slow but reliable
find foo -size 0 -print | xargs rm -f       # Fails with spaces etc in file names

重复问题的已接受答案建议 -delete，当您使用的 find 支持它时，这很好(因为它避免了执行的开销rm 命令通过在 find) 中调用 unlink() :

And the accepted answer to the duplicate question suggests -delete, which is good when it is supported by the find you are using (because it avoids the overhead of executing the rm command by doing the unlink() call inside find):

find foo -size 0 -delete                    # Not POSIX standard

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