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Make a file immutable on Linux using extended file attributes.

#Linux
Explains how to make a file undeletable or immutable on Linux using extended file attributes. Even a root user will not be able to delete a file with the immutable attribute set.
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Implementing a fixed width sidebar with fluid content column using Bootstrap -
http://www.digitalinternals.com/design/bootstrap-fixed-width-sidebar/555/
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How to truncate the end of a file on #Linux / #Unix.

Learn how to truncate or remove a specific number of bytes from the end of a file on Unix / Linux by using dd or truncate.
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Automated FTP file transfers using a shell script
Explains how to use a shell script to do FTP upload/download and how to detect for file transfer errors. Also explains how to use lftp command to do file...
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Download partial file over HTTP using curl #unix #linux
Explains how to partially download a file or a section of file using curl. Also explains how to resume a broken download on Unix / Linux.
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Is stderr redirect not working? Find out why
Explains stderr redirection pitfalls and common errors. For redirections to work, order is important and they are evaluated from left to right.
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Make a file immutable on Linux using extended file attributes.

#Linux
Explains how to make a file undeletable or immutable on Linux using extended file attributes. Even a root user will not be able to delete a file with the immutable attribute set.
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Decrypt WhatsApp .crypt12 files #whatsapp #crypt12
Decrypt WhatsApp crypt12 database files with a simple Java program.
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How to strip header bytes from a binary file using dd or tail
Learn how to strip or remove a specific number of bytes from the header or beginning of a file on Unix / Linux by using dd or tail.
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How to reparent or move a running process to screen #linux #screen
Explains how to move/detach/reparent a running process to another screen terminal on Linux using reptyr and retty.
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Convert number in decimal representation to hex in bash shell #bash #linux #unix
Explains how to convert a number in decimal representation to hex format.
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A way to verify if an email address is valid
Explains how to verify if an email address is valid without sending any test emails. Use SMTP commands to verify email by checking the SMTP response.
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