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wildcard expression

Tar Extract a Single File(s) From a Large Tarball

Q. I've couple of large tarballs such as www.tar and images.tar. Is it possible to extract a single file or a list of files from a large tarball such as images.tar instead of extracting the entire tarball? How do I extract specific files under Linux / UNIX operating systems?
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Apache Web Server Prevent Directory / Folder Listing

Q. If there is no index.html or index.php, Apache displays all other files in a Directory. How do I force Apache web server not to display my directory / folder list?

A.This controlled by a module called mod_autoindex or mod_dir.

You can completely remove (or replace) automatic index generation as per your requirements. The IndexIgnore directive adds to the list of files to hide when listing a directory. File is a shell-style wildcard expression or full filename. Multiple IndexIgnore directives add to the list, rather than the replacing the list of ignored files. By default, the list contains . (the current directory). Open your httpd.conf or .htaccess file and append following directive to block auto indexing for all pdf and mp3 files:
IndexIgnore *.pdf *.mp3
To enforce or deny complete folder listing, use *:
IndexIgnore *
Save and close the file. Restart httpd if httpd.conf was updated:
# service httpd restart

Further readings:

=> Apache mod_autoindex help pages.