Is it possible to read a file's modification date with Ruby?

Question

Is it possible to read a file's modification date with Ruby? I have successfully opened a text file and captured the contents of the file with

File.open("test.txt", "r").each do |line|"

but it would be very useful to read the modification date of the file.

Answer 1

Use mtime:

File.mtime("testfile")
=> 2014-04-13 16:00:23 -0300