I have an OpenStack installation in my laptop running in VirtualBox windows. I want to access it from my android client and send some computational queries and retrieve the response. I know all about hotspot and networking, Just tell me about the OpenStack setup part and how the client will connect to it i.e.…
Tag: java
Jlibfprint cross compilation
I’m trying to cross-compile the JNI Bridge Jlibfprint using buildroot. This is the source code. Here is the .mk file: Extract, Patch, Update, Configure, Autoreconfiguring, Patching libtool run without problem. Then it failed at Building stage with this: Then I added, these includes to the /JlibFprint_jn…
how to change springboot application start directory?
I run a springboot application as service on CENTOS7. The default start directory is “/”, now I want change to “/home/centos/fpcyproxy” where the configuration file is in. How to change it? logging file: content of the service configuration file: OS version: Java version: Answer If you…
Parse command `watch` with `InputStream`
I have this command: How I can to parse output from this command? When I get InputStream of this Process, I get an empty line every time. — I used to restart the command via Java, creating a new thread and all over again. Now, I decided to implement it with the help of watch. Snippet of code: Answer A
How to get PID of java.lang.Process in linux by JAVA
I think out two method to resolve this question but they can’t reach the expectation . I use the ‘Process’ to exec “ps -ef” I can through this method to get all lines and I can filter them by my running command.But If I have many same command process.This isn’t work. I use …
Send Commands remotely from Windows to Linux through Java
I searched everywhere but can’t find a solution that works. I have a Linux Debian machine in my network, which is running as a Mqtt Broker. I want to write a java programm to send sub and pub commands to the broker from another computer (Windows). Is there a way to send Linux commands from a Windows Com…
Does maven shade plugin automatically downcase the package names on Windows?
I have two local artifacts: one with com.org.abc, another with COM.org.xyz. I have created a shaded jar including these 2 and all the other needed dependencies. WHEN I CREATE A SHADED JAR ON LINUX, 2 SEPARATE FOLDERS ARE CREATED : com and COM. BUT ON WINDOWS ONLY SINGLE FOLDER IS CREATED. When I create a shad…
can FileOutputStream.flush() guarantee that other processes can read the file content consistently?
I have a java process A that calls FileOutputStream.flush() to flush the content, and have another process B to read the file content. In most cases, the process B reads the content fine. However, sometimes B reports getting incorrect content. My question is, if the writer process crashes right after calling …
Kafka – Broker: Group coordinator not available
I have the following structure: Created topic with replication factor 3 and partitions 3 by kafka-topics shell script. And use group localConsumers. it works fine when leader is ok. Consumers’ log But if leader is down – I get the error in consumer (systemctl stop kafka): Node 3 is unavailable. ok…
linux ulimit with java does not work properly
I run code on linux ubuntu 17.10 this code returns “unlimited” but whenever I run command from terminal I get 1024. Why those numbers are different? Answer You get the same result if you run the same command from the command line: This is because -c only looks at the argument immediately following…