UNIX

UNIX Frequently Asked Questions, Help, Hacks, Tips and more

How to patch Meltdown and Spectre vulnerabilities on FreeBSD

in Categories , last updated April 20, 2018

All supported versions of FreeBSD affected by Meltdown (CVE-2017-5754), Spectre variant 1 (CVE-2017-5753), and Spectre variant 2 (CVE-2017-5715). How do I patch Meltdown and Spectre vulnerabilities on FreeBSD (speculative execution vulnerabilities) server powered by 64 bit Intel CPU?

Secure memcached server to avoid DDoS amplification attacks

in Categories , , last updated March 5, 2018

I am worried that my Memcached server used for DDoS amplification attacks. How do I secure Memcached server on Linux or Unix-like system to avoid an attacker to exploit my Memcached services as an amplification vector, causing unexpected volumes of traffic to be sent to targeted networks?
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How to access/view Python help when using vim

in Categories , , , last updated January 31, 2018

I am a new Vim text editor user. I am writing Python code. Is there is a way to see Python documentation within vim and without visiting the Internet? Say my cursor is under the print Python keyword, and I press F1. I want to look at the help for the print keyword. How do I show python help() inside vim? How do I call pydoc3/pydoc to seek help without leaving vim?
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