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Find out how to prohibit entry to wp-content, wp-includes and all sub-folders

after looking out I did not discover a solution nonetheless confused of how do I disguise the
-> wp-content
–> uploads
–> themes
–> plugins
-> wp-includes in browser. What I would like is when viewer browse some like this: http://www.mysite.ext/wp-content they may see an error: You do not have permission to entry this web page.
Different mentioned that simply add index.html or index.php with .htaccess within the folder you need to disguise. However what if I’ve many subfolder inside wp-content I’ll do that each folder manually? Or there’s a means both in cpanel, or in .htaccess ? Suggestion please, thanks.