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Enable tab completion for ssh hostnames in PowerShell
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using namespace System.Management.Automation | |
Register-ArgumentCompleter -CommandName ssh,scp,sftp -Native -ScriptBlock { | |
param($wordToComplete, $commandAst, $cursorPosition) | |
$knownHosts = Get-Content ${Env:HOMEPATH}\.ssh\known_hosts ` | |
| ForEach-Object { ([string]$_).Split(' ')[0] } ` | |
| ForEach-Object { $_.Split(',') } ` | |
| Sort-Object -Unique | |
# For now just assume it's a hostname. | |
$textToComplete = $wordToComplete | |
$generateCompletionText = { | |
param($x) | |
$x | |
} | |
if ($wordToComplete -match "^(?<user>[-\w/\\]+)@(?<host>[-.\w]+)$") { | |
$textToComplete = $Matches["host"] | |
$generateCompletionText = { | |
param($hostname) | |
$Matches["user"] + "@" + $hostname | |
} | |
} | |
$knownHosts ` | |
| Where-Object { $_ -like "${textToComplete}*" } ` | |
| ForEach-Object { [CompletionResult]::new((&$generateCompletionText($_)), $_, [CompletionResultType]::ParameterValue, $_) } | |
} |
Thank you so much everyone. This is my version that can read "Include" keyword recursively and support glob too
using namespace System.Management.Automation
Register-ArgumentCompleter -CommandName ssh,scp,sftp -Native -ScriptBlock {
param($wordToComplete, $commandAst, $cursorPosition)
function Get-SSHHostList($sshConfigPath) {
Get-Content -Path $sshConfigPath `
| Select-String -Pattern '^Host ' `
| ForEach-Object { $_ -replace 'Host ', '' } `
| ForEach-Object { $_ -split ' ' } `
| Sort-Object -Unique `
| Select-String -Pattern '^.*[*!?].*$' -NotMatch
}
function Get-SSHConfigFileList ($sshConfigFilePath) {
$sshConfigDir = Split-Path -Path $sshConfigFilePath -Resolve -Parent
$sshConfigFilePaths = @()
$sshConfigFilePaths += $sshConfigFilePath
$pathsPatterns = @()
Get-Content -Path $sshConfigFilePath `
| Select-String -Pattern '^Include ' `
| ForEach-Object { $_ -replace 'Include ', '' } `
| ForEach-Object { $_ -replace '~', $Env:USERPROFILE } `
| ForEach-Object { $_ -replace '\$Env:USERPROFILE', $Env:USERPROFILE } `
| ForEach-Object { $_ -replace '\$Env:HOMEPATH', $Env:USERPROFILE } `
| ForEach-Object {
$sshConfigFilePaths += $(Get-ChildItem -Path $sshConfigDir\$_ -File -ErrorAction SilentlyContinue -Force).FullName `
| ForEach-Object { Get-SSHConfigFileList $_ }
}
if (($sshConfigFilePaths.Length -eq 1) -and ($sshConfigFilePaths.item(0) -eq $sshConfigFilePath) ) {
return $sshConfigFilePath
}
return $sshConfigFilePaths | Sort-Object -Unique
}
$sshPath = "$Env:USERPROFILE\.ssh"
$hosts = Get-SSHConfigFileList "$sshPath\config" `
| ForEach-Object { Get-SSHHostList $_ } `
# For now just assume it's a hostname.
$textToComplete = $wordToComplete
$generateCompletionText = {
param($x)
$x
}
if ($wordToComplete -match "^(?<user>[-\w/\\]+)@(?<host>[-.\w]+)$") {
$textToComplete = $Matches["host"]
$generateCompletionText = {
param($hostname)
$Matches["user"] + "@" + $hostname
}
}
$hosts `
| Where-Object { $_ -like "${textToComplete}*" } `
| ForEach-Object { [CompletionResult]::new((&$generateCompletionText($_)), $_, [CompletionResultType]::ParameterValue, $_) }
}
Thanks to all of you, this is my version that uses
~\.ssh\config
, readsInclude
recursively, accepts multiple hosts per line, and filters out hosts with wildcards
Thanks @hoang-himself -- this snippet works perfectly for my use case, much appreciated.
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Thanks to all of you, this is my version that uses
~\.ssh\config
, readsInclude
recursively, accepts multiple hosts per line, and filters out hosts with wildcardsI don't use
known_hosts
and I don't understand why some people use it, but I made this anywayI imagine you can use both of these at the same time, but pattern matching must be changed.