Password-free SSH access

Password-free SSH access

Life is limited, and I don't want to waste the passwords of multiple online machines. So let's take a look at how to SSH password-free to various machines.

First, you must generate a key.
Ssh-keygen-t dsa-B 1024

Press enter three times to keep the default option
The file will be generated (the user name of the author is yulong. yhj)
/Home/yulong. yhj/. ssh/iddsa
/Home/yulong. yhj/. ssh/iddsa. pub

Note: Back up data in advance ~ Files under/. ssh.

Then execute the command
Ssh-copy-id-I ~ /. Ssh/id_dsa.pub yulong.yhj@10.147.64.79
Replace yulong. yhj with your user name;
Replace 10.147.64.79 with the target machine

Enter the logon password of the target machine;

You can also copy files ~ /. Ssh/iddsa. pub to the target machine, and then manually merge
Cat idrsa. pub >> ~ /. Ssh/authorized_keys
You can.