技术笔记

Golang generic example

Go 1.8 supports generics, this is a simple example to sum numbers and sort numbers.

Specify jdk version on bash

This is an example to specify jdk 1.8 on bash script.

When Jesus said I love you

When Jesus said to you and to me, I love you. He did not say, I love you only when you are good. When Jesus said I love you, He did not say…

Crontab job report operation not permitted error on mac

When I try to run a command to parse file on a usb disk, the command can run successfully from terminal, but the crontab job always failed…

Convert Swift Int64? to Kotlin KotlinLong?

In KMM shared module, if the parameter is Long?, then in swift, the parameter type will be KotlinLong?, in swift code, I use the Int64? as…

Remove untracted files by git

Sometimes, when switch to another branch on git, and will find some file was untracted, I usually delete the files one by one. It’s very…

Solve issue manpath: can’t set the locale; make sure $LC_* and $LANG are correct

When connect to centos from mac, it always report the follow error:

Require password with nginx

Nginx is a web server, we can also use it as a reverse proxy, and we can simply add basic authentication to the server.

Hard reset supervisor to continue ingest kafka data on Druid

Today, I move my druid and kafka service to another server, but after restart druid and kafka, I find that new data won’t be ingested to…

Sync data from linux to max

I used use the tool lsyncd to sync data between linux server, these days I want to sync data from linux to mac, and when start the lsyncd…

使用Podcasts App播放自定义URL

今天同事提到经常用Spotify来听播客，我以前也用过，但是因为我经常自定义RSS…

Temporary change dir on bash file

I have a project which has web code and server code, to build the project, I need to build the web module first, then build the server…