Author Archives: paradox

Enabling command line arguments in NRPE 2.15

In their infinate wisdom when NRPE was updated we again lost command line arguments. If you are like me and run Nagios commands with arguments from the main server you will need to re-enable this on new servers you install … Continue reading

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MySQL Change root Password

How do I change MySQL root password under Linux, FreeBSD, OpenBSD and UNIX-like like operating system over the ssh session? Setting up MySQL password is one of the essential tasks. By default, root user is MySQL admin account user. Please … Continue reading

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Tcpdump usage examples

In most cases you will need root permission to be able to capture packets on an interface. Using tcpdump (with root) to capture the packets and saving them to a file to analyze with Wireshark (using a regular account) is … Continue reading

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FreeBSD File System Quotas

17.11. Disk Quotas Disk quotas can be used to limit the amount of disk space or the number of files a user or members of a group may allocate on a per-file system basis. This prevents one user or group of … Continue reading

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What is Cortana?

Cortana is your clever new personal assistant. Cortana will help you find things on your PC, manage your calendar, track packages, find files, chat with you, and tell jokes. The more you use Cortana, the more personalized your experience will … Continue reading

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What Is Siri?

Siri is a personal assistant that resides on your iPhone 4S. Siri responds to the words you speak rather than requests you type. Just as you can talk to your iPhone 4S to perform a range of tasks (employing speech-to-text … Continue reading

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Do I Really Need to Care About My Privacy Online?

Everyone knows it’s bad if someone steals your password or credit card information, but a lot of people are a lot more apathetic about what they put on Facebook, their personal blog, or anywhere else. Your personal data is worth … Continue reading

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Will I Get Caught If I Download a Movie on BitTorrent?

If I had a nickel for every time someone asked me about getting “caught” downloading stuff with BitTorrent, I’d be swimming through money like Scrooge McDuck. But seriously: yes, the media companies are always on the prowl, looking for people … Continue reading

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How Can I Tell if an Email Is Spam?

Some spam is obvious (“I lost 30 pounds and made $24356 in five hours by taking this special pill!”), but other messages are more subtle. A lot of spam relies oh “phishing,” in which a spammer will try to make … Continue reading

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Do I Really Need to “Eject” USB Drives?

Ever wonder why your computer warns you about ejecting those USB drives before you remove them? It’s because computers use something called write caching to improve performance: if you copy something to your drive, it’ll tell you it’s completed the … Continue reading

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