How to convert a byte[] to io.Reader in Go?

ByEric Ma Mar 24, 2018Mar 24, 2018

How to convert a byte[] to io.Reader in Go directly?

You can use the NewReader() func from the bytes package of Go to convert bytes to io.Reader.

For example,

reader := bytes.NewReader(thebytes)

Linux

Making dnf/yum Not Update Certain Packages

ByEric Ma Jul 13, 2013Aug 23, 2020

We may not want to update some packages such the kernel on a stable server while updating the system. If we run “dnf update” or “yum update”, we may get suggested by dnf/yum to install all the packages with updates. In this post, how to make dnf/yum not update certain packages such the kernel when…

Web

7 Common On Page SEO Mistakes You Are Making and You Should Not

Byirfanahmedkhan Aug 12, 2017Jun 26, 2018

With Google algorithm becoming more intelligent with each passing day, the margin for errors has significantly reduced over the past decade. Back in the day, you might get away with keyword stuffing but today, the same offense will strike off your website from Google search engine results. No one wants that, right. To save you…

How to set process with lowest priority?

ByWeiwei Jia Mar 24, 2018Jan 7, 2020

In system, sometimes, we need backstage threads with very very low priority since it cannot preempt any normal process asks for CPU. SCHED_IDLE class satisfies this requirement which has the priority lower than “nice=19” of CFS. Following code does this. 241 void set_idle_priority(void) { 242 struct sched_param param; 243 param.sched_priority = 0; 244 int s…

QA | Tutorial

How to generate a password in Shell on Linux?

ByQ A Mar 24, 2018Nov 21, 2019

Admins usually need to generate some passwords for others, such as when creating a new user in a Linux system. How to generate a password in Shell on Linux? Several possible and short methods. Here, we generate a password of length 8. Using pwgen: $ pwgen 8 1 dao3PaW9 Password based on base64 (note that…

Filter away non-printable ASCII characters on Linux?

ByEric Ma Mar 24, 2018Mar 24, 2018

Sometimes the commands’ output have some non-printable ASCII characters. How to filter away these non-printable ASCII characters on Linux? You can consider the problem as “how to leave only printable ascii characters?”. The printable characters in ASCII table are: Octal 011: Tab Octal 012: Line Feed Octal 015: Carriage Return Octal 040 to 176: printable…

Tutorial | Web

Reference: Special HTML Characters

ByDavid Yang Apr 20, 2017Dec 6, 2019

HTML supports many characters/symbols such as mathematical symbols, and currency symbols. They are not present on a normal keyboard. And some of these characters may have special meanings for formatting text. To add such characters / symbols to an HTML text, you can use an HTML entity name or an entity number in decimal or…

One Comment

Ravi says:

Feb 21, 2025 at 12:07 am

Eric’s passion for high-performance and scalable distributed systems is clear! Looking forward to insights from his expertise and perspective.

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