Simple example of ssh remote login command
The ssh command is used to remotely log in to a Linux host.
Common format: ssh [-l login_name] [-p port] [user@]hostname
More details can be viewed with ssh -h.
Example
Without specifying a user:
ssh 192.168.0.11
Designated User:
ssh -l root 192.168.0.11
Check the system version:
cat /etc/redhat-release
If you have modified the ssh login port, you can:
ssh -p 12333 192.168.0.11
ssh -l root -p 12333 216.230.230.114
ssh -p 12333 [email protected]
In addition, modify the configuration file /etc/ssh/sshd_config, you can change the ssh login port and prohibit root login. Changing the port can prevent it from being port scanned.
Edit configuration file:
vim /etc/ssh/sshd_config
Find #Port 22, uncomment it, and modify it to a five-digit port:
Port 12333
Find #PermitRootLogin yes, remove the comment, and modify it to:
PermitRootLogin no
Restart the sshd service:
service sshd restart
After I log in with the terminal under mac, I feel worried when I want to upload a file. Is it possible to open an ftp?
I searched, and sure enough, there is a direct command line tool, the name is SCP
It is used as follows:
1. Upload the local file to the server
scp /path/filename username@servername:/path/
例如scp /var/www/test.php [email protected]:/var/www/ 把本机/var/www/目录下的test.php文件上传到192.168.0.101这台服务器上的/var/www/目录中
2、从服务器上下载文件
下载文件我们经常使用wget，但是如果没有http服务，如何从服务器上下载文件呢？
scp username@servername:/path/filename /var/www/local_dir（本地目录）
例如scp [email protected]:/var/www/test.txt 把192.168.0.101上的/var/www/test.txt 的文件下载到/var/www/local_dir（本地目录）
3、从服务器下载整个目录
scp -r username@servername:/var/www/remote_dir/（远程目录） /var/www/local_dir（本地目录）
例如:scp -r [email protected]:/var/www/test /var/www/
4、上传目录到服务器
scp -r local_dir username@servername:remote_dir
例如：scp -r test [email protected]:/var/www/ 把当前目录下的test目录上传到服务器的/var/www/ 目录