File Formats

 Every file in a computer is not identified just by its extension. It has certain leading bytes called "file signatures" and "hidden" data called metadata. Which determines the file type.

a) File signatures:

File signatures (also known as File Magic Numbers) are bytes within a file used to identify the format of the file. Generally they’re 2-4 bytes long, found at the beginning of a file.

https://www.garykessler.net/library/file_sigs.html - garykessler signature repository helps in finding file type by using hexadecimal editors like xxd, hexdump. Here, from output look for FF D8 which determines as jpg file from garykessler website.

$ xxd file_name.jpg | head

Also, Linux utility "file" command can easily determine file type.

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Catch All email setup for your domain

 Catch all email catches all emails sent to your domain that not exists.

1) Existing domain integrate with zoho.com

Any existing domain, can be integrated with zoho.com and get 5 business emails for free for personal use. You can delete and create with different user names as required.

2) Namecheap

Buy cheap domain on "www.namecheap.com" and click "manage" your specific domain. Then look for "redirect email" and provide your personal or so email (Example: bypramod@gmail.com) and save.

You are all done, should be able to recieve any email that was sent to your "...@yourdomain.com".

Note: It might take an hour for processing.

3) Ionos

Buy cheap domain on "www.ionos.com" and in dashboard look for "create your email address" there put "*" and create.

Then from the options select "Email forwarding" and provide corresponding details.

You are all done, should be able to recieve any email that was sent to your "...@yourdomain.com".

Note: It might take an hour for processing.

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