====  Convertions and replacements on Linux command line using hex ====

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Here is some hex operations you can do with basic or built-in GNU Linux tools:

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Convert a given string to hex using **xxd**
<code bash>
echo -ne 'your.wanted.string!' | xxd  -p
</code>

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Replace a hex string on binary file using **GNU sed**:
<code bash>
sed -i -e 's/\x6e\x8e\xaf\x6e/your.replacement.string/g' /etc/ssl/certs/java/cacerts
</code>