solar

# by ifconfig
ifconfig eth1:0 10.1.53.1
ifconfig eth1:0 down

# by iproute2
ip addr add 10.1.53.1 dev eth1
ip addr show
ip addr del 10.1.53.1 dev eth1

solar

#!/bin/sh

curl -sL 'https://github.com/downloads/libevent/libevent/libevent-2.0.20-stable.tar.gz' | tar zx
cd libevent-2.0.20-stable/
./configure --prefix=/usr/local/libevent/2.0.20-stable
make
sudo make install
sudo alternatives --install /usr/local/lib64/libevent libevent /usr/local/libevent/2.0.20-stable/lib 20018 \
  --slave /usr/local/include/libevent libevent-include /usr/local/libevent/2.0.20-stable/include \
  --slave /usr/local/bin/event_rpcgen.py event_rpcgen /usr/local/libevent/2.0.20-stable/bin/event_rpcgen.py

solar

# install boost-1.49.0
cd ~/src
curl -L "http://downloads.sourceforge.net/project/boost/boost/1.49.0/boost_1_49_0.tar.gz?r=http%3A%2F%2Fwww.boost.org%2Fusers%2Fhistory%2Fversion_1_49_0.html&ts=1331091084&use_mirror=jaist" | tar zxv
cd boost_1_49_0
./bootstrap.sh
./b2
sudo ./b2 --prefix=/usr/local/boost_1_49_0 install

solar

How to develop Android application with Scala.

1. install sbt

https://github.com/harrah/xsbt/wiki/Getting-Started-Setup

2. install giter8 using conscript

https://github.com/n8han/conscript
https://github.com/n8han/giter8

solar

package org.sazabi.lib.preference;

import android.content.Context;

import android.content.res.TypedArray;

import android.graphics.drawable.Drawable;

import android.preference.Preference;

solar

SimpleDateFormat format = new SimpleDateFormat("E MMM d kk:mm:ss Z yyyy", Locale.US);
Date datetime = format.parse("Thu Jun 10 01:32:13 +0000 2010");

solar

// grayscale color filter

float r = 0.298912F;
float g = 0.586611F;
float b = 0.114478F;

ColorMatrixFilter filter = new ColorMatrixFilter(
        new ColorMatrix(new float[] {
            r, g, b, 0, 0,
            r, g, b, 0, 0,