How to find the most resent files in a directory with ruby
I had to find some files for processing and wanted to find the latest file by modification date. So here is what I came up with:
Dir.entries(".").sort_by { |f| File.file?(f) ? File.mtime(f) : Time.mktime(0) }.reverse[0..9]
Explanation:
Dir.entries(".")
grab the entries in the current directory
.sort_by
pass the entries into the block for sorting
File.file?(?) ?
the condition entry for finding out if the entry is a file
F.mtime(f) :
if the condition returns true, sort by modification time
Time.mktime(0)
if the condition is false, use the mktime(0)
.reverse[0..1]
reverse the list and show 0 to 1 entries
