Powershell使用SSH

在编写Powershell脚本时，有时会须要和Linux机器进行交互。因此这时就须要在Powershell中使用SSH。

本文将介绍如何在Powershell中安装SSH模块，以及如何使用ssh命令。

一 Posh-SSH模块

1 安装

在Windows中点击搜索，powershell_ise

在PowerShell_ise的环境中运行

PS C:\windows\system32> find-module *ssh*

Version    Name                                Repository           Description                                                                             
-------    ----                                ----------           -----------                                                                             
2.0.2      Posh-SSH                            PSGallery            Provide SSH and SCP functionality for executing commands against remote hosts.          
1.0.0      SSH                                 PSGallery            Provides a PowerShell-based SSH client based on SSH.net  http://sshnet.codeplex.com/    
1.9        SSHSessions                         PSGallery            Svendsen Tech's SSH-Sessions module provides SSH session creation, management and int...
1.1.3      PowerSSH                            PSGallery            This module detects the first use of an SSH command, automatically runs the SSH agent...
1.0        cEPRSSharepoint                     PSGallery            DSCModule helps in installing & configuring the sharepoint site, Farm etc.,             
1.0.4      PSShortcut                          PSGallery            This module eases working with Windows shortcuts (LNK and URL) files.                   

若是没有find-module的命令，须要安装PackageManagement：

https://www.microsoft.com/en-us/download/details.aspx?id=51451

本文采用Posh-SSH的模块：

Install-Module Posh-SSH

能够经过下面的命令，查看安装的模块包含什么命令:

PS C:\Users\hengwei> get-command -Module posh-ssh 
 
CommandType Name ModuleName 
----------- ---- ---------- 
Function Get-PoshSSHModVersion posh-ssh 
Function Get-SFTPChildItem posh-ssh 
......

2 在PowerShell中使用SSH

能够用下面的脚本进行测试：

$username = "hengwei" 
$password = "xxxx" 
$secure = $password | ConvertTo-SecureString -AsPlainText -Force 
$cred = New-Object System.Management.Automation.PSCredential($username,$secure) 
 
New-SSHSession -ComputerName 40.125.173.212 -Credential $cred -AcceptKey 
 
Invoke-SSHCommand -SessionId 0 -Command "cat /etc/redhat-release" 
Invoke-SSHCommand -SessionId 0 -Command "df -k" 

 

Host : 40.125.173.212 
Output : {CentOS Linux release 7.3.1611 (Core) } 
ExitStatus : 0 
 
Host : 40.125.173.212 
Output : {Filesystem 1K-blocks Used Available Use% Mounted on, /dev/sda2 30929148 1200340 29728808 4% /, devtmpfs 847688 0 847688 0% /dev, tmp 
fs 858264 0 858264 0% /dev/shm...} 
ExitStatus : 0 

 

二 SSHSessions模块

1 安装

和Posh-SSH相似，安装采用install-module的方式：

Install-module SSHSessions

其命令比Posh-SSH要少，但都是SSH相关的：

PS C:\Users\hengwei> get-command -Module sshsessions 
 
CommandType Name ModuleName 
----------- ---- ---------- 
Function ConvertFrom-SecureToPlain SSHSessions 
Function Enter-SshSession SSHSessions 
Function Get-SshSession SSHSessions 
Function Invoke-SshCommand SSHSessions 
Function New-SshSession SSHSessions 
Function Remove-SshSession SSHSessions 

 

2 在PowerShell中使用SSH

New-SshSession -ComputerName 40.125.173.212 -Username hengwei -Password xxxx
 
PS C:\Users\hengwei> Get-SshSession 
 
ComputerName Connected 
------------ --------- 
40.125.173.212 

SSHSessions中有一个enter-sshsession的命令，能够直接进入交互式模式，进行一些交互的操做：

PS C:\Users\hengwei> Enter-SshSession -ComputerName 40.125.173.212 
[40.125.173.212]: /home/hengwei # : pwd 
/home/hengwei 
[40.125.173.212]: /home/hengwei # : mkdir test 
[40.125.173.212]: /home/hengwei # : ls 
test 
[40.125.173.212]: /home/hengwei # : ls -l 
total 0 
drwxrwxr-x. 2 hengwei hengwei 6 Nov 20 07:29 test 
[40.125.173.212]: /home/hengwei # : 

也能够使用invoke-sshcommand的模式实现命令

PS C:\Users\hengwei> Invoke-SshCommand -ComputerName 40.125.173.212 -Command "sudo cat /etc/fstab" 
[40.125.173.212] 
# UUID=b7559ac5-b3a4-4b00-b98a-a2a2611806d0 / xfs defaults 0 0 
UUID=b98659b2-5f8c-493e-9304-658905ef1391 /boot xfs defaults 0 0 

 

你们还能够安装一下其余的ssh模块，实如今Powershell中的ssh功能。

三 删除模块

以Posh-SSH模块为例，删除命令：

PS C:\windows\system32> remove-module -name posh-ssh -Force -Verbose -Debug 
VERBOSE: Removing the imported "Get-PoshSSHModVersion" function. 
VERBOSE: Removing the imported "Get-SFTPChildItem" function. 
VERBOSE: Removing the imported "Get-SFTPContent" function. 
......

同时，删除Posh-SSH的目录：

C:\Program Files\WindowsPowerShell\Modules\Posh-SSH

这样就完全删除了Posh-SSH模块。