Deleting all files matching a regular expression in chef

问题

I would like my chef recipe to delete all files that match a certain regex. What would be the way to go about this?

回答1:

You could use an execute resource in your recipe:

execute "Deleting files ... " do
    command "find . -regex 'REGEX' -delete"
    cwd "/path/to/folder"
    action :run
end

The command expects a target system having the find command.

回答2:

Depending on your use case, the previous answers may work. However, using bash's native delete functionality is not cross-platform. Additionally, depending on the level of control you need over the resources, you may want to use a more Ruby-like approach:

Dir["/path/to/folder/{YOUR_REGEX}"].each do |path|
  file ::File.expand_path(path) do
    action :delete
  end
end

This will create a unique entry in the resource collection for each file that matches the regex. It is also idempotent (meaning it won't run if the files are already deleted) and cross-platform (it will work on Windows too).

回答3:

A scenario where you'd want to do this is cleaning up files installed/setup from a previous version of a recipe.

I found this cookbook that provides several useful recipes for these cleanup purposes: https://github.com/nvwls/zap

zap_directory '/etc/sysctl.d' do
   pattern '*.conf'
end

zap_crontab 'root' do
  pattern 'test \#*'
end

zap_users '/etc/passwd' do
    # only zap users whose uid is greater than 500
    filter { |u| u.uid > 500 }
end

来源：https://stackoverflow.com/questions/24431500/deleting-all-files-matching-a-regular-expression-in-chef