Code

Initialize Jetson Nano Environment

If we use Jetson Nano's default image to start our project, we may have some follow steps to make our work easier.

Go Proxy Configurations

To speed up our dependencies updating for golang, or prepare some patterns for our special libraries, we probably consider to use a proxy to speed it up.

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By Yu, 4 years3 months ago

The short-circuiting in bash

Bash script writing is a import approach to configure the linux system. Suppose we wish to add a user if not exists, the command may seems as follow:

TARGET_USER=alice
if (! id -u $TARGET_USER > /dev/null 2>&1 ); then
    echo "creating user $TARGET_USER"
    # adduser $TARGET_USER
fi

However, it is kind of too long. In this case short-circuiting is a alternative solution. (more…)

By Yu, 4 years3 months ago

A simple workflow to create a clean python library based on Anaconda

The open-source Anaconda Distribution is an easy way to perform Python/R data science and machine learning on Linux, Windows, and Mac OS X. We could easily prepare an isolated and constant environment on anywhere based on a configure file.

Considering the various kind of strange errors due to the different versions of python and python libraries, this management tool makes our life much more comfortable in deploying and cooperating.

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By Yu, 4 years3 months ago

How to keep the Ubuntu laptop on working

We may edit the configure file "/etc/systemd/logind.conf" and change one line from

#HandleLidSwitch=suspend

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By Yu, 4 years3 months ago

Code

Deploy a HDFS environment

This post will introduce some basic progress & configuration of deploying a HDFS cluster, and some error diagnosis.

Please see this post for a topic collection of distributed computing.

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By Yu, 4 years3 months ago

Code

Gracefully shutdown a http server in golang

To gracefully shutdown a http server requires a few steps.

The http library's serving function will block over there when getting started, until we call http.Server.Close(). As for us, we can invoke the starting function in a goroutine, and call close in another one.

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By Yu, 4 years3 months ago