Quick Start C++ in Linux Mint/Ubuntu/Debian Hello World

1) Install C and C++ Compilers in Mint 

      sudo aptitude install build-essential 

2) Compile the first Program sudo gedit first.c add the following lines save and exit the file

            #include int main() { printf("Hello world\n"); return 0; } 

3) Firstly compile the code using the following command 

     cc -c first.c 
 that would produce an object file you may need to add to the library.

 4) then create an executable using the following command 

 cc -o first first.c

 5) Now run this executable using the following command

 ./first

Fix Broken Packages

Debian, fix broken package installations sudo apt-get -f install Running a .DEB file sudo dpkg -i skype-ubuntu_2.2.0.35-1_amd64.deb

Remove Services From Running In Ubuntu StartUp Scripts

sudo update-rc.d -f apache2 remove

Installing XAMPP IN UBUNTU

After downloading the file give the below command

1. sudo chown root:byorn xampp-linux-1.7.3a.tar.gz

2. sudo tar xvfz xampp-linux-1.7.3a.tar.gz -C /opt/

3. cd /opt/lampp
sudo ./lampp start

Groovy, Blob to String

sql.eachRow "select * from table1",
{
///println it.id

String result = ""
blobTest = (oracle.sql.BLOB)it.mydoc

byte_stream_test = blobTest.getBinaryStream()
byte_stream_test.eachLine {charset->

result += charset+"\n" }
println result;


}

Staring Oracle in Ubuntu. - Problem and work around resolution.

1) /etc/init.d/./oralcle-xe.sh start


2) error:
Copyright (c) 1991, 2005, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=lexi)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
byorn@lexi:/etc/init.d$ sudo ./oracle-xe restart
Shutting down Oracle Database 10g Express Edition Instance.
Stopping Oracle Net Listener

3) Now:
sudo /etc/init.d/./oralcle-xe.sh restart

4) success:
ler(s) for this service...
The command completed successfully


Any body have any idea about this?

DB Connectivity With Groovy

import java.sql.Connection
import java.sql.DriverManager
import javax.sql.DataSource
import groovy.sql.Sql
import oracle.jdbc.driver.OracleTypes

driver = oracle.jdbc.driver.OracleDriver
Connection conn = DriverManager.getConnection(
'jdbc:oracle:thin:rcms/password@localhost:1521:xe');

/*
*
* Here we call a procedural block with a closure.
* ${Sql.INTEGER} and ${Sql.VARCHAR} are out parameters
* which are passed to the closure.
*
*/
Sql sql = new Sql(conn);

//define a closure
myclosure = {println it.cusid + " " + it.cusname }

sql.eachRow("select * from tbl_customer", myclosure);