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Let's say I have a file at /source.txt, and I want to copy it to /a/b/c.txt. /a and /a/b may or may not exist.
Is there a way to copy the file and have it create the necessary parent directories if necessary?
Ideally this would be one command. In particular, I'd like to avoid parsing the file/directory parts of destination path and then manually calling FileUtils.mkdir_p and FileUtils.cp.
Pure Ruby is preferred, though a Rails-dependent solution is acceptable.
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Using Ruby's Mkdir Method To Create A New Directory If you want to create a new folder with Ruby you can use the Dir. mkdir method. If given a relative path, this directory is created under the current path ( Dir. pwd ).
Ruby has a method for this case. It is File::expand_path . Converts a pathname to an absolute pathname. Relative paths are referenced from the current working directory of the process unless dir_string is given, in which case it will be used as the starting point.
Typically it's up to you to make sure that the target directory path exists, so I doubt if any built-in command does what you're looking for.
But using FileUtils.mkdir_p(dir) could be very straightforward, especially by using File.dirname() to parse the path. You could even wrap it in a utility routine, e.g.:
require 'fileutils' def copy_with_path(src, dst) FileUtils.mkdir_p(File.dirname(dst)) FileUtils.cp(src, dst) end If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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