使用rcp命令实现两台主机之间的文件传输

1. 实验环境

两台主机均为最小化安装的centos7操作系统，

主机名	IP地址
host-134	192.168.153.134
host-135	192.168.153.135

实验之前关闭两台主机的防火墙和selinux

2. 在两台主机上均安装所需的服务

yum -y install rsh rsh-server xinetd   ntsysv

3. 命令输入 ntsysv 回车之后开启图形界面管理模式来设置开机启动

在打开的服务中找到rlogin和rsh，按空格键在两项服务之前加上*号，添加之后按tab键选中Ok 回车退出

4. 重启xinetd服务

systemctl restart  xinetd

5. 在两台主机上均编写rsh和rlogin的配置文件，配置文件内容相同

[root@host-134 xinetd.d]# cat /etc/xinetd.d/rsh
#default: on
# description: The rshd server is the server for the rcmd(3) routine and, \
# consequently, for the rsh(1) program. The server provides \
# remote execution facilities with authentication based on \
# privileged port numbers from trusted hosts.
service shell
{
    
    
 socket_type = stream
 wait = no
 user = root
 log_on_success += USERID
 log_on_failure += USERID
 server = /usr/sbin/in.rshd
 disable = no
}

[root@host-134 xinetd.d]# cat /etc/xinetd.d/rlogin 
# default: on
# description: rlogind is the server for the rlogin(1) program. The server \
# provides a remote login facility with authentication based on \
# privileged port numbers from trusted hosts.
service login
{
    
    
 socket_type = stream
 wait = no
 user = root
 log_on_success += USERID
 log_on_failure += USERID
 server = /usr/sbin/in.rlogind
 disable = no
}

6. 在两台主机上均修改 /etc/securetty 配置文件，在文件默认加一下3行

rexec
rsh
rlogin

7. 在两台主机上均编辑/etc/hosts，添加两主机的ip，主机名

[root@host-134 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.153.134 host-134
192.168.153.135 host-135

[root@host-135 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.153.134 host-134
192.168.153.135 host-135

8. 修改~/.rhosts ,添加两个主机的主机名，ip

[root@host-135 ~]# cat ~/.rhosts 
host-134 root
host-135 root

[root@host-134 ~]# cat ~/.rhosts 
host-134 root
host-135 root

9. 重启xinetd服务并设为开机自启

systemctl restart  xinetd

systemctl enable xinetd

10. 登录测试

134 主机登录 135 主机

[root@host-134 ~]# rsh host-135
Last login: Fri Jan 22 15:36:08 from host-134
[root@host-135 ~]# 

135 主机登录 134 主机

[root@host-135 ~]# rsh host-134
Last login: Fri Jan 22 14:05:29 from host-135
[root@host-134 ~]# 

11. 传输文件测试

将134主机上的134.txt文件传输到135主机上的/root目录下

rcp /root/134.txt host-135:/root

在135主机上验证

[root@host-135 ~]# ls
134.txt  

将135主机上的test目录下的子文件和子目录传输到135主机上的/root目录下

rcp -r /root/test  host-134:/root

验证：

[root@host-134 ~]# tree test/
test/
├── test_1
├── test1.txt
├── test_2
└── test2.txt

2 directories, 2 files