[root@rhel7_node1 Desktop]# ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
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:
06:c2:36:fc:ac:57:02:97:9d:07:e2:53:aa:69:f4:0f root@rhel7_node1.westos.com
The key's randomart image is:
+--[ RSA 2048]----+
|      . o        |
|   o . * o       |
|    O B o .      |
|   o @ o .       |
|    + E S        |
|   . . *         |
|    . . .        |
|     .           |
|                 |
+-----------------+
[root@rhel7_node1 Desktop]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.1.109
The authenticity of host '192.168.1.109 (192.168.1.109)' can't be established.
ECDSA key fingerprint is 42:c1:1b:5b:ee:e6:4c:4f:02:6a:ca:1d:e6:9d:9f:92.
Are you sure you want to continue connecting (yes/no)? yes
/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
root@192.168.1.109's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@192.168.1.109'"
and check to make sure that only the key(s) you wanted were added.

ａ）把本地文件复制到远程主机

注：－ｒ表示复制目录　　　－ｑ　表示传输文件时不显示进度

ｂ）把远程文件复制到本地

ｓｃｐ　　ｒｏｏｔ＠１９２．１６８．１．１０９：／ｍｎｔ／ｗｅｓｔｏｓ＿ｒｈｅｌ８　　／ｒｏｏｏｔ／Ｄｅｓｋｔｏｐ

三．ｒｓｙｎｃ命令

ｒｓｙｎｃ　　文件　　　　　远程用户＠远程主机ｉｐ：远程主机目录

ｒｓｙｎｃ　　远程用户＠远程主机ｉｐ：远程主机目录　　　文件路径

ｒｓｙｎｃ　

　　　　　　　－ｒ　　　复制目录　　　

　　　　　　　－ｌ　　　复制链接

　　　　　　　－ｐ　　　复制权限

　　　　　　　－ｔ　　　复制时间戳

　　　　　　　－ｏ　　　复制拥有着

　　　　　　　－ｇ　　　复制拥有组

　　　　　　　－Ｄ　　　复制设备文件

实验如下：

准备环境：

四．scp与 rsync的比较

制作脚本并执行后结果如下：

可见 scp三次执行时间几乎一致，rsync三次执行时间后两次远远小于第一次。

五. 文件的归档与压缩

1.文件归档

tar

c 创建

f 指定文件名称

x 解档

t 向归档文件中添加文件

--get 解档指定文件

--delete 删除指定文件

-C 指定解档路径

实验如下：

[root@rhel7_node1 Desktop]# tar tf etc.tar
etc/
etc/fstab
etc/crypttab
etc/mtab
etc/fonts/
etc/fonts/conf.d/
etc/fonts/conf.d/65-0-ttf-arphic-uming.conf
etc/fonts/conf.d/59-liberation-sans.conf
etc/fonts/conf.d/90-ttf-arphic-uming-embolden.conf
etc/fonts/conf.d/10-scale-bitmap-fonts.conf
etc/fonts/conf.d/65-0-madan.conf
etc/fonts/conf.d/20-unhint-small-vera.conf
etc/fonts/conf.d/65-0-lohit-kannada.conf
etc/fonts/conf.d/25-no-bitmap-fedora.conf
etc/fonts/conf.d/65-0-lohit-tamil.conf
etc/fonts/conf.d/25-unhint-nonlatin.conf
etc/fonts/conf.d/65-0-nhn-nanum-gothic.conf
etc/fonts/conf.d/30-metric-aliases.conf
etc/fonts/conf.d/30-urw-aliases.conf
etc/fonts/conf.d/40-nonlatin.conf
etc/fonts/conf.d/45-latin.conf