Category: How-to
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Building an audience: A lesson from the younger me
When it comes to building an audience as a solo-entrepreneur, the younger me was much smarter, much more in tuned with himself. These days, I operate 95% of my life from the left side of my brain, analyzing and taking a data driven, logical approach. While necessary in many respects, I need to make more…
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Squeezing the most out of your study sessions (midterm and final exam preparation)
Why publish my studying techniques? This semester, I manage to pull off an A not only for the midterm and final exams, but for the class as a whole. My intention of revealing my grade is not to boast (that’s poor taste), but to give some credibility to the techniques and strategies below, techniques and…
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Testing your gRPC services using grpc_cli
This post may be helpful for you if you are building gRPC services and want a convenient way to test your service using a command line tool. Similar to using cURL when testing HTTP(s) services, I wanted an easy way to test the gRPC services that I’m building. Originally, I had originally planned to whip…
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How to clean your cleaning tools (notes)
How do you take care of the tools that you use for cleaning? This is a question I’ve been curious about over the last couple days since currently going through a cleaning phase. To up my cleaning skills, I’ve been searching online for tutorials and discovered an amazing YouTube channel called Clean My Space that…
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How to convert .heic images to .jpeg using command line on MacBook
My wife’s apple iPhone X saves images she captured with her camera as .heic format1 , a relatively new file format that compresses high quality images and I needed a way to convert these type of files to .jpeg (which apparently dates back to 1992) so that they can be uploaded to my blog and…
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How to obtain the length of the memory statistics array when calling virDomainMemoryStats
Up to ‘nr_stats’ elements of ‘stats’ will be populated with memory statistics from the domain. Only statistics supported by the domain, the driver, and this version of libvirt will be returned. What does the above API description even mean by nr_stats? How do you determine the number of elements that need to be populated? For…
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How to build the libvrt documentation from source
If just download the libvert application development guide, click here. How to build the documentation The libvrt developer documentation link is broken (i.e. HTTP 404). But I need the development guide for my advanced OS course so I downloaded the repository and built the documentation from source. If you want to do the same…
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How to launch and ssh to a KVM instance
This posts assumes that you’ve already synced the OS images on to your virtual box. If you haven’t, check out this blog post. While launching a new virtual machine for project1, I kept on running into variants of the following error: vagrant@ubuntu-bionic:~$ sudo uvt-kvm ssh aos_vm1 ubuntu@192.168.122.183: Permission denied (publickey). To get this to work,…
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Syncing releases with uvt-simplestreams-libvrt
If you are executing uvt-simplestreams-libvrt you’ll need to execute the command with sudo and exercise patience (i.e. be okay with waiting 3 minutes while program runs without outputting any informational message to the standard output) No logging to standard output/error I had to exercise some patience when executing the command uvt-simplestreams-libvrt sync, the command that…