Linux实用小命令

[root@master ~]# ssh-keygen -f /root/.ssh/id_rsa -P ''
GeneraTing public/private rsa key pair.
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:bNEK2Pzah70XtL8XQ4oPmw/D0cjzVA8AM8WG0ONB9Ns root@master
The key's randomart image is:
+---[RSA 2048]----+
|        .=*=o    |
|     +   .=+o.   |
|    . + ...+. .. |
|       + oo +o.o.|
|        S  *o+E .|
|       + o.oB. o |
|      . o o+=+  o|
|         . ++.. .|
|          .....o |
+----[SHA256]-----+

[root@master ~]# sshpass -e ssh-copy-id 10.0.24.17
sshpass: -e option given but SSHPASS environment variable not set

[root@master ~]# export SSHPASS=root123.

[root@master ~]# sshpass -e ssh-copy-id 10.0.24.17
/usr/bin/ssh-copy-id: INFO: source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempTing to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys

number of key(s) added: 1

Now try logging into the machine, with:   "ssh '10.0.24.17'"
and check to @H_817_6@make sure that only the key(s) you wanted were added.

[root@master ~]#