自动设置ssh无密码登陆 (Auto Setup SSH login without password)

• 测试通过的平台有（不仅限）：CentOS/RHEL/Ubuntu/Xubuntu
• Test passed on(not limited to) CentOS/RHEL/Ubuntu/Xubuntu

How to use:

• ssh.passwordless.sh ip_address port_number username

Example 1: (default port number is "22", default username is "root")

• ssh.passwordless.sh 192.168.1.1

Example 2:

• ssh.passwordless.sh 192.168.1.1 2222 kashu