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  • What Are the Secrets Behind Google’s Success Story?
    Posted on Saturday September 07, 2019
    Google has created an image that tells us its core values are centered around innovation. There are very few companies that can boast a similar level of influence as Google. Nevertheless, we should not only focus on Google’s achievements today but also learn from their journey to the top. We can break down Google’s core […] The post What Are the Secrets Behind Google’s Success Story? appeared first on SysTutorials. Continue Reading »
  • The cultural impact of cloud technology
    Posted on Wednesday September 04, 2019
    Cloud technology is one of the latest forms of technology. A cloud is a place where exactly the data is stored. Also, the cloud is the place where the data is managed and processed. Cloud ensures that the data managed on a cluster or the network of servers. All of these servers are available remotely […] The post The cultural impact of cloud technology appeared first on SysTutorials. Continue Reading »
  • What is the Future of Big Data Analytics and Hadoop?
    Posted on Thursday July 18, 2019
    Big Data has taken a lead in the IT industry and has played a significant role in the Business growth and decision-making processes that gives you an edge over the competitors. This is equally applicable to the organizations as well as professionals existing in the analytics domain. Big Data Analytics bring an ocean of opportunities […] The post What is the Future of Big Data Analytics and Hadoop? appeared first on SysTutorials. Continue Reading »
  • How to Change Windows User Name on Windows 10 Using Computer Management
    Posted on Sunday July 14, 2019
    The Windows user name can be changed according to the user’s needs and requirement. The Windows 10 Windows Settings tool interface keeps changing after updates. It is a little hard to find out the tool to do the user name changing. One way to change Windows user name is to do it through the Computer […] The post How to Change Windows User Name on Windows 10 Using Computer Management appeared first on SysTutorials. Continue Reading »
  • How to Statically Link OCaml Programs
    Posted on Saturday June 08, 2019
    Static linking is preferred for some cases although it has its own various problems. Static building/linking is not always possible for some languages on some platform. For OCaml, the answer to this question is yes. In this post, we will introduce 2 methods to statically linking OCaml: static linking with runtime glibc required and static […] The post How to Statically Link OCaml Programs appeared first on SysTutorials. Continue Reading »
  • 5 necessary PC hardware that a programmer needs to upgrade
    Posted on Thursday May 30, 2019
    The world of technology has evolved drastically over the last few decades. Almost every aspect of our lives is dominated by technology. At the heart of technology lies computer programming. Computer programming is what dictates the success of the technology. I mean think about it, your smartphone, PC, ETC they all rely on programming. This […] The post 5 necessary PC hardware that a programmer needs to upgrade appeared first on SysTutorials. Continue Reading »
  • New Linux Kernel 5.0: Features and Improvements
    Posted on Saturday April 13, 2019
    Linux is the most used and well-known open-source operating system for computers, mobile devices, servers, and mainframes, etc. Linux has so many awesome features to serve its users like Live CD/USB. And it is fast, easy and free to use by computers around the world. The kernel is referred to as the essential component of […] The post New Linux Kernel 5.0: Features and Improvements appeared first on SysTutorials. Continue Reading »
  • How to limit shared AWS EC2 accounts’ access to view and start all VMs yet stop only certain VMs
    Posted on Sunday March 10, 2019
    If a team with many accounts share and manages the virtual machines under that same AWS accounts, it is a common practice to limit AWS EC2 accounts’ access to view or start all VMs yet stop only certain VMs. For example, one account has 50 VMs tagged "prod" while 25 VMs tagged "dev". The developers […] The post How to limit shared AWS EC2 accounts’ access to view and start all VMs yet stop only certain VMs appeared first on SysTutorials. Continue Reading »
  • What can we expect in Java update 2019?
    Posted on Friday March 08, 2019
    Java is the most regularly used programming language for the creation of web applications. This high-level programming language develops by the Sun Micro-system. This language was designed for use in the world of internet and known for fastest, secure, and most reliable language of the computing platform. One interesting fact is that Java programmers are […] The post What can we expect in Java update 2019? appeared first on SysTutorials. Continue Reading »
  • How to enlarge root partition and filesystem size of cloud Linux VM at runtime without rebooting Linux
    Posted on Saturday December 29, 2018
    It is common that the root disk space is not enough when running a Virtual Machine in the cloud such as Amazon Web Service (AWS). The cloud storage usually provides tools or facilities to enlarge a virtual disk size. However, to make the Linux recognize and and use the enlarged disks without rebooting the OS, […] The post How to enlarge root partition and filesystem size of cloud Linux VM at runtime without rebooting Linux appeared first on SysTutorials. Continue Reading »
  • Do big data stream processing in the stream way
    Posted on Tuesday November 27, 2018
    Reading: Years in Big Data. Months with Apache Flink. 5 Early Observations With Stream Processing: https://data-artisans.com/blog/early-observations-apache-flink. The article suggest adopting the right solution, Flink, for big data processing. Flink is interesting and built for stream processing. The broader view and take away may be to solve problems using the right solution. We saw many painful […] The post Do big data stream processing in the stream way appeared first on SysTutorials. Continue Reading »
  • How to set up Insync to synchronize Google Drive and Google Docs files in Ubuntu 18.04 Linux
    Posted on Sunday November 25, 2018
    Google Drive is a nice cloud storage service. It provides a suite of nice online document spreadsheet and slide editors Google Docs, Google Sheets and Google Slides. The collaborative editing and full history tracking features of Google Docs are excellent. Google Drive gives 16GB free storage which is pretty much larger compared to other free […] The post How to set up Insync to synchronize Google Drive and Google Docs files in Ubuntu 18.04 Linux appeared first on SysTutorials. Continue Reading »
  • Thunderbird Addons to Make Thunderbird Easier to Use
    Posted on Sunday July 08, 2018
    Thunderbird is powerful and feature rich. But different users have different needs and it is not feasible to include all features into the base software, where a plugin system shines. Thunderbird, similar to Firefox from Mozilla, supports addons/plugins and has a large ecosystems. Here, we will introduce several addons to Thunderbird that make Thunderbird easier […] The post Thunderbird Addons to Make Thunderbird Easier to Use appeared first on SysTutorials. Continue Reading »
  • Handling Sparse Files on Linux
    Posted on Thursday April 05, 2018
    Sparse files are common in Linux/Unix and are also supported by Windows (e.g. NTFS) and macOSes (e.g. HFS+). Sparse files uses storage efficiently when the files have a lot of holes (contiguous ranges of bytes having the value of zero) by storing only metadata for the holes instead of using real disk blocks. They are […] The post Handling Sparse Files on Linux appeared first on SysTutorials. Continue Reading »
  • How to Add a File Based Swap for Linux
    Posted on Tuesday April 03, 2018
    We may want to add some swap space for a Linux box while only find that all disk space is partitioned and mounted. Some partition has large available free space. For such cases, we may not want to change the partition allocation. The solution may be to add a file based swap for Linux as […] The post How to Add a File Based Swap for Linux appeared first on SysTutorials. Continue Reading »
  • How to resize a virtual disk of KVM
    Posted on Saturday March 24, 2018
    I test it for qcow2 format. Other formats are TBA. qemu-img resize kvm1.qcow2 +20G cp kvm1.qcow2 kvm1-orig.qcow2 virt-resize --expand /dev/sda1 kvm1-orig.qcow2 kvm1.qcow2 Reference: https://fatmin.com/2016/12/20/how-to-resize-a-qcow2-image-and-filesystem-with-virt-resize/ I test it for qcow2 format. Other formats are TBA. qemu-img resize kvm1.qcow2 +20G cp kvm1.qcow2 kvm1-orig.qcow2 virt-resize --expand /dev/sda1 kvm1-orig.qcow2 kvm1.qcow2 Reference: https://fatmin.com/2016/12/20/how-to-resize-a-qcow2-image-and-filesystem-with-virt-resize/ Answered by harryxiyou. The post How to resize a virtual disk of KVM appeared first on SysTutorials. Continue Reading »
  • How to not use concrete types in lambda function parameters in C++11?
    Posted on Saturday March 24, 2018
    C++11 requires that lambda function parameters be declared with concrete types. This is sometimes annoying. auto is really nice, especially when the type is complex like std::vector<std::string>::iterator is quite long to type. I know C++14 allows auto in lambda functions. But how to not use concrete types in lambda function parameters in C++11? In C++11, […] The post How to not use concrete types in lambda function parameters in C++11? appeared first on SysTutorials. Continue Reading »
  • How to make Vim indent C++11 lambdas correctly?
    Posted on Saturday March 24, 2018
    Vim seems not indent C++11 lambas very well. How to make Vim indent C++11 lambdas correctly? For this following program, Vim indents it as #include <iostream> #include <string> #include <vector> #include <algorithm> int main () { std::vector<std::string> strs({"one", "two"}); std::vector<std::string> newstrs; std::transform(strs.begin(), strs.end(), std::back_inserter(newstrs), [](const std::string& s) -> std::string { if (s == "one") { […] The post How to make Vim indent C++11 lambdas correctly? appeared first on SysTutorials. Continue Reading »
  • How to hide my private IP in Email header in Thunderbird?
    Posted on Saturday March 24, 2018
    It seems Thunderbird sends out my private/lan IP to the SMTP server. For example, in an Email sent out by Thunderbird, the header contains Received: from [192.168.1.2] (example.com [1.2.3.4]) by mail.example.com (Postfix) with ESMTPSA id 92CD297DEA; It is fine that the SMTP server records the public IP (1.2.3.4) as it is what it sees. But […] The post How to hide my private IP in Email header in Thunderbird? appeared first on SysTutorials. Continue Reading »
  • How to operator[] access element in a const map in C++?
    Posted on Saturday March 24, 2018
    How to operator[] access element in a const map in C++? For example, the compiler will report error on this piece of code: #include <iostream> #include <string> #include <map> std::int64_t count(const std::map<std::string, std::int64_t>& map) { return map["one"] + map["two"]; } int main () { std::map<std::string, std::int64_t> map = { {"one", 1}, {"two", 2} }; std::cout […] The post How to operator[] access element in a const map in C++? appeared first on SysTutorials. Continue Reading »
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