* README
  This demo uses SSHJ(net.schmizz) to execute remote command and download file by sftp with sshv2.
  pls find instructions from comment in main/java/com/crscd/ssh/App.java
  
* Usage
** AuthKey prepair
   1. update /etc/ssh/ssd_config at remote hosts
   2. generate a rsa pub/pri key pair
   3. copy pub key into ~/.ssh/authorized_keys at remote hosts
** from shell:

   qigao@X64U:~/java_ssh_demo$ mvn compile
   qigao@X64U:~/java_ssh_demo$ mvn exec:java -Dexec.mainClass="com.crscd.ssh.App" -Dexec.args="[email protected]"

  result like below will be displayed:
  root     26853     1  0 11:27 ?        00:00:00 /usr/sbin/sshd
  root      2263  2261  0 16:13 ?        00:00:00 bash -c ps -ef|grep "/usr/sbin/sshd"
  root      2281  2263  0 16:13 ?        00:00:00 grep /usr/sbin/sshd

 also a file from /root/install.log from remote server will be downloaded at current directory.
** Test cases
   no test case is provide