How to rename a file in Ruby?

问题

Here's my .rb file:

puts "Renaming files..."

folder_path = "/home/papuccino1/Desktop/Test"
Dir.glob(folder_path + "/*").sort.each do |f|
    filename = File.basename(f, File.extname(f))
    File.rename(f, filename.capitalize + File.extname(f))
end

puts "Renaming complete."

The files are moved from their initial directory to where the .rb file is located. I'd like to rename the files on the spot, without moving them.

Any suggestions on what to do?

回答1:

What about simply:

File.rename(f, folder_path + "/" + filename.capitalize + File.extname(f))

回答2:

Doesn't the folder_path have to be part of the filename?

puts "Renaming files..."

folder_path = "/home/papuccino1/Desktop/Test/"
Dir.glob(folder_path + "*").sort.each do |f|
  filename = File.basename(f, File.extname(f))
  File.rename(f, folder_path + filename.capitalize + File.extname(f))
end

puts "Renaming complete."

edit: it appears Mat is giving the same answer as I, only in a slightly different way.

回答3:

If you're running in the same location as the file you want to change

File.rename("test.txt", "hope.txt")

Though honestly, I sometimes I don't see the point in using ruby at all...no need probably so long as your filenames are simply interpreted in the shell:

`mv test.txt hope.txt`

回答4:

If you are on a linux file system you could try mv #{filename} newname

You can also use File.rename(old,new)

回答5:

Don't use this pattern unless you are ready to put proper quoting around filenames:

`mv test.txt hope.txt`

Indeed, suppose instead of "hope.txt" you have a file called "foo the bar.txt", the result will not be what you expect.

来源：https://stackoverflow.com/questions/5530479/how-to-rename-a-file-in-ruby