Mattia Campagnano

Mattia Campagnano

Wednesday, June 22, 2016

Inverted Caps Lock on virtual machines? No problem!

Problem 

I'm using a VMware Fusion virtual machine for an Oracle online college class.
Sometimes, a weird issue occurs, while using SQL.

When entering my commands, my CAPS LOCK key gets suddenly inverted.

In other terms, while keeping CAPS LOCK pressed, commands are typed in lowercase, and vice versa.

I like my keywords and my commands to be all caps and the values in lowercase.

That makes it easier for me to understand what I wanted to achieve with those commands when looking at them at a later time.

I think consistency helps, in this case.
I get forced to use my keyboard by reversing its functionalities.

Monday, June 20, 2016

OS X - Slow Wi-Fi? Hit it with your best shot

Problem 

Poor Wi-Fi performance?

Does you connection drop or look sluggish?

No fear, there's an easy quick for this.

Your problem could be caused by channel congestion.

If your Wi-Fi is setup on a channel already used by numerous wireless devices in your area, you may experience a poor performance and, at times, your connection might drop.

In layman's terms, a channel congestion is like having to go through a backed up highway over the rush hour. Too many cars (in our case, devices) out there.

OS X offers a quick and dirty fix for this problem, without needing to install any third-party tools.

Solution

Friday, June 10, 2016

Mattia’s Dummie’s Corner - Understanding UNIX/Linux file permissions

In a UNIX/Linux operating system, file permissions represent a critical topic, but this concept can be very hard for beginners to understand, especially if they're used to Windows.

Thankfully, my Linux instructor did a great job with me, so now I can share this knowledge with you guys.

For this post, we're going to analyze the output of the ls command, which lists the contents of a directory.

For you to display file permissions, you need to use the ls -l command (the so-called long form of the ls command).

This is, IMHO, maybe the most important Linux command .

After a while, you'll get so used to it that you're never gonna use the simple ls anymore (that's my case, at least).

How to read a file listing

Thursday, June 9, 2016

What to do when OS X Recovery Partition won’t boot

Problem 

Today, while I was working on my Mac, I dropped a couple of books from my desk on the power chord (I use a surge suppressor), which caused it to die.

As usual, I unplugged the power chord for a while and then pressed down the power button for about 30 seconds to discharge any remainder statics.

Then re-plugged the power chord and restarted my Mac.

I wanted to repair any errors caused by this unexpected event, so I booted from Recovery Partition for accessing Disk Utility.

But, this time, a surprise was waiting for me.

OS X got stuck and a stop signal was suddenly shown.


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