Ftp ACL (Access Control Lists ) – restricted FTP access

Posted on December 31, 2014June 20, 2015 by coder

What is ACL ?

When you enable it , only selected ips have access to FTP server as a client. it is for security of FTP. if some one stole your FTP.

How to ? It is depends on your FTP provider. But if you have own linux server.

access-list 101 permit tcp any any eq 21  
!--- The above line permits TCP traffic from any source, such as the FTP client,
      
!--- FTP server destination at the FTP control port 21. 

access-list 101 permit tcp any eq 20 any
!--- The above line permits TCP traffic from any source, such as the FTP server,
    
!--- FTP client at FTP data port 20.

Example Document :

HP_ACCESS_CONTROL_Ch3_ACL

Reconstitute the Archive

Posted on December 30, 2014June 20, 2015 by coder

cat *tar.gz* | tar -xvpzf - -C /

split a file

Posted on December 30, 2014June 20, 2015 by coder

split -d -b 1200m /backup.tar.gz /name/backup.tar.gz.

Using tar command

Posted on December 30, 2014July 28, 2015 by coder

Create Archive 

tar czf ~/backup.tgz *

or 

tar cvf  backup.tar  /dirname

Create Archive

tar czf ~/backup.tgz *

tar cvf backup.tar /dirname

untar  Archive,  Extraction

tar -xvf  tar.file

untar Archive, Extraction

tar -xvf tar.file

using tar command for Partition backup

# mounting disks 
mount  /dev/sda1 /mnt/root

cd /mnt/root
tar cpjf /root.tar.bz2 .

# mounting disks

mount /dev/sda1 /mnt/root

cd /mnt/root

tar cpjf /root.tar.bz2 .

Context Parameter with remote port

Posted on December 29, 2014June 4, 2015 by coder

  Properties props = new Properties();
 props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.enterprise.naming.SerialInitContextFactory");
 props.setProperty("org.omg.CORBA.ORBInitialHost", "localhost");
 // glassfish default port value will be 3700, -  
props.setProperty("org.omg.CORBA.ORBInitialPort", "3700");
InitialContext ctx = new InitialContext(props);

 CalcRemote bean = (CalcRemote) ctx.lookup("java:global/TestEAR/TEjb/Calc!    com.CalcRemote");

Properties props = new Properties();

props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.enterprise.naming.SerialInitContextFactory");

props.setProperty("org.omg.CORBA.ORBInitialHost", "localhost");

// glassfish default port value will be 3700, -

props.setProperty("org.omg.CORBA.ORBInitialPort", "3700");

InitialContext ctx = new InitialContext(props);

CalcRemote bean = (CalcRemote) ctx.lookup("java:global/TestEAR/TEjb/Calc! com.CalcRemote");

Please check the port with linux Terminal

$ netstat -tunap

1	$ netstat -tunap

Context parameters

Posted on December 29, 2014June 4, 2015 by coder

public class Main {

    public static void main(String[] args) throws Exception {        
        InitialContext ctx = new InitialContext();      
        CalculatorRemote bean = (CalculatorRemote) ctx.lookup("java:global/TestEAR/TEjb/Calc!com.CalcRemote");
        bean.sayHello("java.someload.com");
    }
}

How to compile java over terminal, command line , Run java file

Posted on December 29, 2014June 4, 2015 by coder

1. You need to check, java version with this command

$ java -version

1	$ java -version

2. Compile the code

$ javac ...... ...

1	$ javac ...... ...

3. Run The compiled

$ java -jar compiled.jar

1	$ java -jar compiled.jar

javac -cp /path/to/jar/file  Myprogram.java
java -cp .:/path/to/jar/file Myprogram

javac -cp src/external/myfile.jar me.java
java -cp .:src/external/myfile.jar me

javac -cp /path/to/jar/file Myprogram.java

java -cp .:/path/to/jar/file Myprogram

javac -cp src/external/myfile.jar me.java

java -cp .:src/external/myfile.jar me

// Java Files
java -Djava.library.path="libs/natives/" 
     -cp libs/jars/lwjgl.jar:libs/jars/lwjgl_util.jar DisplayTest


// External jar files 
1) Use the CLASSPATH enviroment variable, as in:
  CLASSPATH=.:/path/to/lwjgl/lwjgl.jar:/path/to/lwjgl/lwjgl_util.jar 
  export CLASSPATH

// Run java app
java -Djava.library.path="libs/natives" DisplayTest

// Java Files

java -Djava.library.path="libs/natives/"

-cp libs/jars/lwjgl.jar:libs/jars/lwjgl_util.jar DisplayTest

// External jar files

1) Use the CLASSPATH enviroment variable, as in:

CLASSPATH=.:/path/to/lwjgl/lwjgl.jar:/path/to/lwjgl/lwjgl_util.jar

export CLASSPATH

// Run java app

java -Djava.library.path="libs/natives" DisplayTest

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