Android GPS Example Code

안드로이드에서 GPS 를 이용해서 좌표를 구하는 간단한 예제이다.

http://www.fun25.co.kr/blog/android-simple-gps-example


아래는 Email을 전송하는 예제이다.
https://www.mkyong.com/android/how-to-send-email-in-android/

Install Chrome browser on Ubuntu 16.04

You can read the solution "How to install chrome browser" as following site


http://askubuntu.com/questions/510056/how-to-install-google-chrome

Search YUM package name

Sometimes, I can't know package name of YUM.
For example, Assume there is no ifconfig command on CentOS.

   # ifconfig
    command not found

Then, run yum command like this...

   # yum provides  ifconfig
    ....
    ....
   net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
   Repo        : base
   Matched from:
   Filename    : /sbin/ifconfig

And then, run yum command like this...

   # yum install net-tools  

Install Chrome Browser on CentOS 7 / Redhat

Read following site


http://www.tecmint.com/install-google-chrome-on-redhat-centos-fedora-linux/

UEFI 외장하드디스크에 Windows 10 설치하기 (on USB HDD)

아래 블로그에 USB HDD에 Windows 10을 설치하는 방법이 기술되어 있다.

http://blog.naver.com/PostView.nhn?blogId=baljern&logNo=220529120477&parentCategoryNo=&categoryNo=327&viewDate=&isShowPopularPosts=true&from=search

C shell program example

Following example shows looping


#!/bin/csh

set j = $1
while ( $j <= 100 )
    echo "Welcome $j times"
    @ j++     
## 또는 @ j += 3
end



Example Shell Code :  Sleep for XX minutes

#!/bin/csh ## ## How to use ## example: sleep_minute.sh 10 (minutes) ## set ma_value = $1 echo "I'm going to sleep for ${ma_value} minutes " set j = 1 while ( ${j} <= ${ma_value} ) date echo "${j} minutes are passed" @ j++ sleep 60 end

Example : Kill process which name is "my_proc"

kill -KILL `ps -ef | grep mamm | grep -v grep | awk -F' ' '{ print $2}'`



Example : Count file number in a folder

#!/bin/csh 
set grouplist = "ABC HSS IBC IMGC SLF MRF MSS TAS"
#set CUR_DATE=`date -d "-2 min" +%Y-%m-%d-%H:%M:00`
set STD_DATE=`date  +$1-00:00:00`
set INC_DATE=`date  -d "+1 days" +$STD_DATE`

echo "$STD_DATE, $INC_DATE"

if ($#argv < 2) then
    echo "./xxx.sh day, stat_type(1MIN/5MIN/1HOUR)"
    echo "ex) ./xxx.sh 2016-03-22 5MIN"
    exit
endif

set ARG_DAY = $1
set ARG_TYPE = $2

echo "$ARG_DAY, $ARG_TYPE"

foreach gname ( $grouplist )
    printf "\n[ $gname ]\n"
    set syslist = `grep $gname /home/ina/etc/ini/ASE/svc_system.ini | grep "=" |  grep -v "#" | awk  -F "=" '{print $2}'|  awk -F "+" '{ for(i=1; i<=NF; i++) print $i }' ` ;
    foreach sname ( $syslist )
        printf "$sname  :   "
        #set count_result = `ls -al $gname/$sname/5MIN/*$CUR_DATE* | awk '{print $8}' | awk -F\. '{print $3}' | awk -F\- '{print $1"-"$2"-"$3}' | sort | uniq -c`
        set count_result = `ls -al $gname/$sname/$ARG_TYPE/*$ARG_DAY* | wc -l`
        printf "$count_result\n"

        if ($ARG_TYPE == "1MIN") then
            if ($count_result != "1440") then
                echo "1M : [$sname] : $count_result"
            endif
        else if ($ARG_TYPE == "5MIN") then
            if ($count_result != "288") then
                echo "5M : [$sname] : $count_result"
                ## for(i=0; i<288; i++) 
                set STAT_DATE=`date -d "+5 min" +$1-%H:%M:00`
                set FILE_CHK = ls -al $gname/$sname/$ARG_TYPE/*$ARG_DAY* | awk '{print $8}' | awk -F\. '{print $4}' | grep $STAT_DATE
                if($FILE_CHK == NULL) then
                echo "Not Exist : $sname.5MIN.$STAT_DATE"
            endif
        else if ($ARG_TYPE == "1HOUR") then
            if ($count_result != "24") then
                echo "1H : [$sname] : $count_result"
            endif
        endif
### 1M = 1440, 5M = 288, 1H = 24 ###

    end
end

endif




-------------------------------------------------------

if (0) then
  echo "false case"
  exit
endif
  echo "true case"

Make a new disk on Linux(or CentOS) with VMware, VirtualBox

1)  Make a virtual disk on VMware configuration GUI.

2)  Boot up CentOS (Linux)

3)  View physical disk list
      fdisk -l

4)  Create a logical partition
      fdisk  /dev/sdb
      (and then  make a new partition  '/dev/sdb1')

5)  Make a new filesystem
     mkfs  /dev/sdb1

6)  Mount the new filesystem to special symbol '/home/andrew'
     mount  /dev/sdb1  /DISK.B

JFreechart JDBC Bar Chart Example

Java and JFreechart with JDBC (which is MySQL java driver)

1) Download following JAR files

• jfreechart-x.y.z.jar   (with jcommon-x.y.z.jar)
• ojdbc6.jar
• jdbc driver for MySQL Version x.y

2) Create sample DB  table

/* Create Chart table */
create table chart_Data
(
category varchar2(20),
marks number
)
/* Insert data - Need COMMIT */
insert into chart_data values ('English',67)
insert into chart_data values ('Physics',67)
insert into chart_data values ('Chemistry',67)
insert into chart_data values ('Biology',67)
insert into chart_data values ('C',67)
/* Randomize mark values - Needs COMMIT */
update chart_data set marks=TRUNC(DBMS_RANDOM.value(40,99))

3) Make a JAVA code like a following.

================================================================
import java.sql.*;
import java.io.*;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.ChartUtilities;


public class BarChartJDBCExample {

    public static void main(String[] args) throws Exception{

        Class.forName("com.mysql.jdbc.Driver");
        Connection conn = DriverManager.getConnection("jdbc:mysql://10.10.2.11:3306/andrew_db", "andrew", "andrew");
        DefaultCategoryDataset my_bar_chart_dataset = new DefaultCategoryDataset();
        Statement stmt = conn.createStatement();
        try {
            ResultSet query_set = stmt.executeQuery("select * from MSS_RAW_MSG_5M_TBL where STAT_TIME > '2016-04-09';");
            while (query_set.next()) {
                String stat_time = query_set.getString("STAT_TIME");
                int call_setup = query_set.getInt("CALL_SETUP");
                int call_term  = query_set.getInt("CALL_TERM");
                int regi       = query_set.getInt("REGI");
                my_bar_chart_dataset.addValue(call_setup, "CALL_SETUP", stat_time);
                my_bar_chart_dataset.addValue(call_term, "CALL_TERM", stat_time);
                my_bar_chart_dataset.addValue(regi, "REGISTER", stat_time);
            }

            JFreeChart BarChartObject = ChartFactory.createLineChart("INA System", "Date", "TPS", my_bar_chart_dataset, PlotOrientation.VERTICAL, true, true, false);

            query_set.close();

            stmt.close();

            conn.close();

            int width  = 1920; /* Width of the image */

            int height = 1080; /* Height of the image */

            File BarChart = new File("output_chart.png");

            ChartUtilities.saveChartAsPNG(BarChart, BarChartObject, width, height);

        }

        catch (Exception i)

        {

            System.out.println(i);

        }

    }

}

==================================================================


I referred following blog.

< Java Chart Example >
http://thinktibits.blogspot.kr/p/java-chart-example-programs.html

http://thinktibits.blogspot.kr/2013/01/JFreeChart-XYDataset-Line-Chart-Java-Example.html

http://thinktibits.blogspot.kr/2013/01/JFreeChart-SVG-XY-Line-Chart-Graph-Java-Example.html




< Bar Chart >
http://thinktibits.blogspot.kr/2012/11/jfreechart-java-jdbc-bar-chart-example.html


< Pie Chart >
http://thinktibits.blogspot.kr/2012/11/jfreechart-jdbc-pie-chart-java-example.html

Install iftop on CentOS or RedHat (RHEL)

Visit following web site and check what is latest version of iftop

   http://pkgs.repoforge.org/iftop/


Get iftop package.
  wget http://pkgs.repoforge.org/iftop/iftop-1.0-0.pre3.el7.rf.x86_64.rpm

Install iftop by rpm tools
  rpm -ivh iftop-1.0-0.pre3.el7.rf.x86_64.rpm

Routing Protocol Hierarchy (라우팅 프로토콜 체계)

Routing Protocol

  - IGP (AS 내부에서 라우팅 프로토콜을 관리하기 위함)

     + RIP

     + OSPF

     + ISIS

     + EIGRP

  - EGP (AS와 AS간 라우팅 프로토콜을 관리하기 위함)

     + BGP

Install R on RedHat (RHEL 6.6)

View following site and download source code (R-3.2.3.tar.gz)

   https://cran.r-project.org/


[ Command Line ]

   wget  https://cran.r-project.org/src/base/R-3/R-3.2.3.tar.gz
   tar  xvf  R-3.2.3.tar.gz
   vi  INSTALL
   ./configure
   make
   make  check
   make  info
   make  pdf
   make  install
   make  install-info




[ To do before R-installing ]

Install texi2any program before building the R program
   http://ftp.gnu.org/gnu/texinfo/
   wget  http://ftp.gnu.org/gnu/texinfo/texinfo-6.0.tar.xz

Install texlive program before building thr R program
   yum  install  texlive*

Check if ncurses library is installed before R installing.
   yum  install  ncurses-devel

Sydney news paper

http://m.smh.com.au/money/saving/kickstart-2016-with-a-financial-health-check-20160107-gm15ke.html