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Android

Helpful tips and tricks for Android.

Nova Launcher

Nova Launcher is an awesome UI supplement/replacement for stock Android UI.

Remove Swipe Indicator

To disable the swipe indicator, perform the following:

• Select Nova Settings
• Select App & widget drawers

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Linux

Helpful tips and tricks for Linux.

How-To

Quickies

• NetworkManager
  • Setup bridge
    • nmcli connection add type bridge autoconnect yes con-name [bridge name] ifname [bridge interface name]
    • nmcli con add type bridge-slave ifname [ethernet name] master [bridge hame]
• Example

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My Virtual Machines

cloud-host-01

• redhat-server: Offload work development such as JBoss.

cloud-host-02

As needed

cloud-host-03

As needed

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My Hardware

My hardware at home.

Routers

den-ap

Serves as administrative server.

Tech spec:

• Debian Buster as a chroot'd environment proved extremely challenging. It is a pure 100% Entware solution:
• Netgear WNDRv4

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My Network

I have quite a few routers acting as client bridges around my home.

admin-ap

• LG AV System

cloud-ap

• pi-01
• pi-02
• cloud-host-02

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ELK

I'm a huge fan of Splunk and wanted similar logging functionality at home. Therefore, all baremetal/VMs/chroot'd environments send rsyslog's to admin-ap via /etc/rsyslog.d/50-default.conf:

*.* @192.168.168.2:514

rsyslogd on admin-ap

This setup is required so that all clients send their logs to one server who forwards to Logstash server v5.6.16.

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Java

Helpful tips and tricks for Java.

Quickies

• Disable XSD validation in web service calls: ((BindingProvider) port).getRequestContext().put("set-jaxb-validation-event-handler", false);
• Import jks file
  • keytool -genkey -alias [name] -keyalg RSA -keystore [jks file]

Adopt A JDK

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Debian

Tips and Tricks for Debian.

Install

List Installed Packages

Installed packages can be listed as follows:

• apt list --installed
• dpkg-query -l

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Raspbian

Helpful tips and tricks for Raspbian.

Upgrading to Buster

To upgrade your existing Raspbian OS from Stretch to Buster, perform the following:

1. apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 04EE7237B7D453EC 648ACFD622F3D138
2. grep -rl stretch /etc/apt/ | sudo xargs sed -i 's/stretch/buster/g'
3. apt update -y && apt dist-upgrade -y
4. reboot

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Maven

Helpful tips and tricks for Maven.

Quickies

• Execute a java app: mvn exec:java -Dexec.mainClass=[fully qualified name of class]
• Update properties: mvn -U versions:update-properties
• PKIX path building failed: mvn -Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true ...
• Proxies
  • http: -Dhttp.proxyHost=<host> -Dhttp.proxyPort=<port>
  • https: -Dhttps.proxyHost=<host> -Dhttps.proxyPort=<port>