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How to Save Grep Output to File in Linux

Sometimes you may need to write grep output to file. Here is how to save grep output to file in Linux.

Sometimes you may need to force users to download file from your website. Here is how to force download file in PHP.

Sometimes you may need to force users to download files from your website. Here is how to force download file in NGINX.

Sometimes you may need to host multiples sites on a single Apache server. Here is how to configure multiple virtual hosts in Apache.

Very often you may need to cleanup disk space in Linux to make your system run faster. Here is how to free up disk space on your system.

Often you may need to add response header in NGINX. Here is how to set response headers in NGINX.

Sometimes you may need to redirect URLs to their parent folders on your website. Here is how to redirect to parent folder in Apache.

Sometimes you may need to redirect URL to another subdirectory of your website. Here is how to rewrite URL to subdirectory in Apache.