To verify file integrity, people sharing files will often provide a hash. That way, when you receive the file, you can run the same function on the file and verify if it is the same as the one you intended to receive. There are various hashes out there, but this snippet will show you how to get SHA1 hash on a Mac. [Read more…]
After recently wiping my MacBook Pro and reinstalling macOS, I started getting this error every time I opened iTunes: “You do not have enough access privileges for this operation.”
Though the error is slightly vague, the gist of what’s happening was still pretty clear: there must be a permissions error of some sort. But finding and fixing that error was not as straight-forward as I would have hoped.
Find out what I did to fix the “You do not have enough access privileges for this operation” error in iTunes after the break. [Read more…]
Websense is one of the most well-known web filtering services in the world of IT. It is used by businesses, churches, and everything in between thanks to its robust set of features and its efficacy in managing internet access.
If you are an IT professional working for an organization that implements Websense, testing to see if your web traffic is actually being filtered or not can be a very useful troubleshooting tool.
Or if you are a delinquent internet user of such an organization, you might want to check if your traffic is being monitored before you visit NSFW websites.
Thankfully, both of these use cases can be addressed by this handy website. [Read more…]
I was setting up the firm’s virtual private network (VPN) and testing out a few different configurations when I realized that I couldn’t delete the profiles I’d loaded from the System Preferences app. Though they don’t make it easy, there is a way to delete a Mac VPN profile. Read on to learn how.
I was doing some work on an Invenio installation today, and I came across a warning that’s pretty common to Ubuntu: “The following packages have been kept back.” Here’s what happened, and here’s how to fix it.
Just a quick post here to get you out of a jam. I’ve been working with Invenio recently, and I ran into this error when working on a new server:
Error: No module named invenio.inveniocfg
It took a little while to figure out the solution, so to save you some time, I’ll show you how to fix it. [Read more…]
Sometimes when you’re working on your Ubuntu server (or desktop for that matter) you need to list all installed packages.
Here’s an easy way.
Another insightful comic from XKCD.
After installing Ubuntu with encrypted LVM, I decided to do go ahead and encrypt the external drives the server uses with cryptsetup LUKS command. But for some reason I kept getting this error:
Command failed with code 22: Invalid argument
I plan to write up a detailed guide on encrypting drives, but in the meantime I just wanted to post how to fix this error.
Security is a multi-faceted objective. If you care about protecting your data, you have to protect it from people as well as hardware failure. Thankfully, with Ubuntu you can meet both goals at the same time. This screenshot tutorial will show you exactly how to install Ubuntu Server 12.04 with encrypted LVM on RAID1.