Powershell에서는 cmd.exe의 명령어를 지원하진 않습니다.
Powershell에서 기존 cmd.exe의 명령어를 사용할 수 있는 것처럼 보이지만,
PS F:\temp> dir
Directory: F:\temp
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 2019-09-20 01:05 5632 ConsoleApp1.dll
-a---- 2019-09-20 00:53 159744 ConsoleApp1.exe
실제로 이것은 alias 명칭일 뿐 cmd.exe에서 제공하는 shell 명령어를 그대로 지원하는 것은 아닙니다. 간혹, 해당 alias 지원이 너무 잘 되어 있어서 cmd.exe의 명령어를 쓰던 습관대로 옵션을 주기 시작하면 이제 문제가 발생합니다. ^^
예를 들어 하위에 파일이 포함되어 있어도 폴더를 삭제하는 rmdir 명령어를 Powershell에서 주면,
PS C:\temp> rmdir /s .\ConsoleApp1\
Remove-Item : A positional parameter cannot be found that accepts argument '.\ConsoleApp1\'.
At line:1 char:1
+ rmdir /s .\ConsoleApp1\
+ ~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Remove-Item], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.RemoveItemCommand
저렇게 "A positional parameter cannot be found that accepts argument" 오류가 발생합니다. 오류 메시지에도 나오지만, rmdir은 Powershell의 Remove-Item 명령어가 대신 수행하게 되는데 그 명령어에는 "/s" 같은 식으로 옵션을 줄 수 없기 때문입니다. 즉, cmd.exe의 명령어 이름이지만 Powershell 구문의 옵션을 줘야 하는 것입니다.
PS C:\temp> rmdir -Recurse -Force .\ConsoleApp1\
//또는
PS C:\temp> Remove-Item -Recurse -Force .\ConsoleApp1\
참고로, 다음은 Powershell에서 지원하는 alias를 나열합니다. (이렇게나 세세하게 너무 잘 지원하고 있어서 Powershell이 마치 cmd.exe의 모든 명령어를 제공하는 것처럼 착각하게 만듭니다. ^^;)
PS C:\temp> get-alias
CommandType Name Version Source
----------- ---- ------- ------
Alias % -> ForEach-Object
Alias ? -> Where-Object
Alias ac -> Add-Content
Alias asnp -> Add-PSSnapin
Alias cat -> Get-Content
Alias cd -> Set-Location
Alias CFS -> ConvertFrom-String 3.1.0.0 Microsoft.PowerShell.Utility
Alias chdir -> Set-Location
Alias clc -> Clear-Content
Alias clear -> Clear-Host
Alias clhy -> Clear-History
Alias cli -> Clear-Item
Alias clp -> Clear-ItemProperty
Alias cls -> Clear-Host
Alias clv -> Clear-Variable
Alias cnsn -> Connect-PSSession
Alias compare -> Compare-Object
Alias copy -> Copy-Item
Alias cp -> Copy-Item
Alias cpi -> Copy-Item
Alias cpp -> Copy-ItemProperty
Alias curl -> Invoke-WebRequest
Alias cvpa -> Convert-Path
Alias dbp -> Disable-PSBreakpoint
Alias del -> Remove-Item
Alias diff -> Compare-Object
Alias dir -> Get-ChildItem
Alias dnsn -> Disconnect-PSSession
Alias ebp -> Enable-PSBreakpoint
Alias echo -> Write-Output
Alias epal -> Export-Alias
Alias epcsv -> Export-Csv
Alias epsn -> Export-PSSession
Alias erase -> Remove-Item
Alias etsn -> Enter-PSSession
Alias exsn -> Exit-PSSession
Alias fc -> Format-Custom
Alias fhx -> Format-Hex 3.1.0.0 Microsoft.PowerShell.Utility
Alias fl -> Format-List
Alias foreach -> ForEach-Object
Alias ft -> Format-Table
Alias fw -> Format-Wide
Alias gal -> Get-Alias
Alias gbp -> Get-PSBreakpoint
Alias gc -> Get-Content
Alias gcb -> Get-Clipboard 3.1.0.0 Microsoft.PowerShell.Management
Alias gci -> Get-ChildItem
Alias gcm -> Get-Command
Alias gcs -> Get-PSCallStack
Alias gdr -> Get-PSDrive
Alias ghy -> Get-History
Alias gi -> Get-Item
Alias gin -> Get-ComputerInfo 3.1.0.0 Microsoft.PowerShell.Management
Alias gjb -> Get-Job
Alias gl -> Get-Location
Alias gm -> Get-Member
Alias gmo -> Get-Module
Alias gp -> Get-ItemProperty
Alias gps -> Get-Process
Alias gpv -> Get-ItemPropertyValue
Alias group -> Group-Object
Alias gsn -> Get-PSSession
Alias gsnp -> Get-PSSnapin
Alias gsv -> Get-Service
Alias gtz -> Get-TimeZone 3.1.0.0 Microsoft.PowerShell.Management
Alias gu -> Get-Unique
Alias gv -> Get-Variable
Alias gwmi -> Get-WmiObject
Alias h -> Get-History
Alias history -> Get-History
Alias icm -> Invoke-Command
Alias iex -> Invoke-Expression
Alias ihy -> Invoke-History
Alias ii -> Invoke-Item
Alias ipal -> Import-Alias
Alias ipcsv -> Import-Csv
Alias ipmo -> Import-Module
Alias ipsn -> Import-PSSession
Alias irm -> Invoke-RestMethod
Alias ise -> powershell_ise.exe
Alias iwmi -> Invoke-WmiMethod
Alias iwr -> Invoke-WebRequest
Alias kill -> Stop-Process
Alias lp -> Out-Printer
Alias ls -> Get-ChildItem
Alias man -> help
Alias md -> mkdir
Alias measure -> Measure-Object
Alias mi -> Move-Item
Alias mount -> New-PSDrive
Alias move -> Move-Item
Alias mp -> Move-ItemProperty
Alias mv -> Move-Item
Alias nal -> New-Alias
Alias ndr -> New-PSDrive
Alias ni -> New-Item
Alias nmo -> New-Module
Alias npssc -> New-PSSessionConfigurationFile
Alias nsn -> New-PSSession
Alias nv -> New-Variable
Alias ogv -> Out-GridView
Alias oh -> Out-Host
Alias popd -> Pop-Location
Alias ps -> Get-Process
Alias pushd -> Push-Location
Alias pwd -> Get-Location
Alias r -> Invoke-History
Alias rbp -> Remove-PSBreakpoint
Alias rcjb -> Receive-Job
Alias rcsn -> Receive-PSSession
Alias rd -> Remove-Item
Alias rdr -> Remove-PSDrive
Alias ren -> Rename-Item
Alias ri -> Remove-Item
Alias rjb -> Remove-Job
Alias rm -> Remove-Item
Alias rmdir -> Remove-Item
Alias rmo -> Remove-Module
Alias rni -> Rename-Item
Alias rnp -> Rename-ItemProperty
Alias rp -> Remove-ItemProperty
Alias rsn -> Remove-PSSession
Alias rsnp -> Remove-PSSnapin
Alias rujb -> Resume-Job
Alias rv -> Remove-Variable
Alias rvpa -> Resolve-Path
Alias rwmi -> Remove-WmiObject
Alias sajb -> Start-Job
Alias sal -> Set-Alias
Alias saps -> Start-Process
Alias sasv -> Start-Service
Alias sbp -> Set-PSBreakpoint
Alias sc -> Set-Content
Alias scb -> Set-Clipboard 3.1.0.0 Microsoft.PowerShell.Management
Alias select -> Select-Object
Alias set -> Set-Variable
Alias shcm -> Show-Command
Alias si -> Set-Item
Alias sl -> Set-Location
Alias sleep -> Start-Sleep
Alias sls -> Select-String
Alias sort -> Sort-Object
Alias sp -> Set-ItemProperty
Alias spjb -> Stop-Job
Alias spps -> Stop-Process
Alias spsv -> Stop-Service
Alias start -> Start-Process
Alias stz -> Set-TimeZone 3.1.0.0 Microsoft.PowerShell.Management
Alias sujb -> Suspend-Job
Alias sv -> Set-Variable
Alias swmi -> Set-WmiInstance
Alias tee -> Tee-Object
Alias trcm -> Trace-Command
Alias type -> Get-Content
Alias wget -> Invoke-WebRequest
Alias where -> Where-Object
Alias wjb -> Wait-Job
Alias write -> Write-Output
[이 글에 대해서 여러분들과 의견을 공유하고 싶습니다. 틀리거나 미흡한 부분 또는 의문 사항이 있으시면 언제든 댓글 남겨주십시오.]