Linux common servers build SSH and SCP

1.SSH1.1SSH Introduction

SSH (Secure Shell), developed by network Working group of the IETF, is a security protocol based on the application layer and transport layer.

SSH is a protocol that provides security for Telnet sessions and other network services, and is commonly used for remote logins and copies of data between users.

SSH has a strong cross-platform capability

The use of SSH service needs to install the necessary server and client, if a machine wants to be remote from the B machine, then a machine needs to install the SSH server, B machine needs to install the SSH client

1.2 Installing the ssh1.2.1 installation SSH server

[Email protected]:~$ sudo apt-get install Openssh-server
[sudo] python password:
Reading Package List ... Complete
Analyzing Dependency tree for Package
Reading status information ... Complete
Openssh-server is already the latest version (1:7.2p2-4ubuntu2.4).
The following packages are installed automatically and are not needed now:
linux-headers-4.4.0-121 Linux-headers-4.4.0-121-generic linux-headers-4.4.0-22
Linux-headers-4.4.0-22-generic Linux-image-4.4.0-121-generic Linux-image-4.4.0-22-generic
Linux-image-extra-4.4.0-121-generic Linux-image-extra-4.4.0-22-generic
Use ' sudo apt autoremove ' to uninstall it (them).
0 packages were upgraded, 0 new packages were installed, 0 packages were uninstalled, 377 packages were not upgraded.

1.2.2 Telnet to the SSH server

SSH [email protected]

macdemacbook-pro:~ mac$ ssh [email protected]
[email protected] ' s password:
Permission denied, please try again.
[email protected] ' s password:
Welcome to Ubuntu 16.04.1 LTS (gnu/linux 4.4.0-31-generic x86_64)

• Documentation:https://help.ubuntu.com
• Management:https://landscape.canonical.com
• Support:https://ubuntu.com/advantage

381 packages can be updated.
3 updates are security updates.

Need to restart the system
Last login:wed June 6 02:08:42 2018 from 192.168.1.5
[Email protected]:~$ pwd
/home/python

• In the process of using SSH access, if there is an access error, you can see if there is a file ~/.ssh/known_ssh exists, if there is a delete to resolve. 2.scp
• Remote Copy file, scp-r2.1 installation Openssh-server
• The prerequisite for using this command is to require that the target host is already installed Openssh-server

  [Email protected]:~$ sudo apt-get install Openssh-server
  [sudo] python password:
  Reading Package List ... Complete
  Analyzing Dependency tree for Package
  Reading status information ... Complete
  Openssh-server is already the latest version (1:7.2p2-4ubuntu2.4).
  The following packages are installed automatically and are not needed now:
  linux-headers-4.4.0-121 linux-headers-4.4.0-121-generic linux-headers-4.4.0-22 Linux-headers-4.4.0-22-generic
  Linux-image-4.4.0-121-generic Linux-image-4.4.0-22-generic Linux-image-extra-4.4.0-121-generic
  Linux-image-extra-4.4.0-22-generic
  Use ' sudo apt autoremove ' to uninstall it (them).
  0 packages were upgraded, 0 new packages were installed, 0 packages were uninstalled, 377 packages were not upgraded.
  [Email protected]:~$

2.2. Use the format

• Scp-r target username @ Destination Host IP address:/destination file absolute path/absolute/relative path saved to native 2.2.1 Copy files on server to local

• Copy files can not add-r, copy folder must be added
• A terminal on a Mac connects to the target host's SCP server

• Copying remote files to a locally specified directory

  macdemacbook-pro:~ mac$ ls
  Desktop Movies ipmsg.db
  Documents Music Baidu Cloud synchronization disk
  Downloads Pictures
  Library Public
  #拷贝远程文件到本地指定目录
  macdemacbook-pro:~ mac$ scp-r [email protected]:/home/python/desktop/1.py./desktop
  [email protected] ' s password:
  1.py
  100% 1030 1.0kb/s 00:00

• To see if replication succeeded

  macdemacbook-pro:~ mac$ CD desktop/
  Macdemacbook-pro:desktop mac$ ls
  1.py python test.py
  Macdemacbook-pro:desktop mac$

• Copy remote file to local directory and modify file name directly

  macdemacbook-pro:~ mac$ scp-r [email protected]:/home/python/desktop/1.py./desktop/2.py
  [email protected] ' s password:
  1.py 100% 1030 1.0kb/s 00:00
  macdemacbook-pro:~ mac$ CD desktop/
  Macdemacbook-pro:desktop mac$ ls
  1.py 2.py python test.py

• Direct copy to local current directory you can write the local file name you want to store
  Picture description
  

2.2.2 Copy Local files to remote

Acdemacbook-pro:desktop mac$ SCP 2.py [email protected]:/home/python/desktop/11.py
[email protected] ' s password:
2.py 100% 1030 1.0kb/s 00:00
Macdemacbook-pro:desktop mac$

View

[Email protected]:~/desktop$ ls
11.py 1.py 1.sh AAA ABC Desktop Test Test.txt

3.2.2.3 Local directory replication to remote

2.2.4 Remote directory replication to Local

Linux common servers build SSH and SCP