how to get files that has been created or updated after a particular file?

I have to get files those has been created or modified after a particular file. I know the name of that par开发者_Python百科ticular file.

What operating system?

1) Get the date that file was created

2) Then get the files that were created after that date

To do this portably, use a combination of File::list(...), File::lastModified() and File::listRoots() to walk the file-system. The execution could be time consuming, however. Some Unix operating systems have a daemon that can tell you about file modifications more efficiently; I assume the daemon taps into the file-system code.

As an alternative:

1) Get all the possibly relevant files.

2) Sort by creation date.

3) Get all files after your marker file.

Advantage: you only access the file system once.

Disadvantage: uses more memory.