Create directory if it does not exist

Question

I am writing a PowerShell script to create several directories if they do not exist   The filesystem looks similar to this  D   D  TopDirec SubDirec Project1 Revision1 Reports  D  TopDirec SubDirec Project2 Revision1  D  TopDirec SubDirec Project3 Revision1     Each project folder has multiple revisions   Each revision folder needs a Reports folder    Some of the  revisions  folders already contain a Reports folder  however  most do not     I need to write a script that runs daily to create these folders for each directory   I am able to write the script to create a folder  but creating several folders is problematic

User · Answer

There are three ways I know to create a directory using PowerShell:

Method 1: PS C:\> New-Item -ItemType Directory -path "C:\livingston"

Method 2: PS C:\> [system.io.directory]::CreateDirectory("C:\livingston")

Method 3: PS C:\> md "C:\livingston"

User · Answer

From your situation it sounds like you need to create a  Revision   folder once a day with a  Reports  folder in there  If that s the case  you just need to know what the next revision number is  Write a function that gets the next revision number  Get-NextRevisionNumber  Or you could do something like this   foreach  Project in  Get-ChildItem  D  TopDirec  -Directory          Select all the Revision folders from the project folder       Revisions   Get-ChildItem     Project Fullname  Revision   -Directory        The next revision number is just going to be one more than the highest number        You need to cast the string in the first pipeline to an int so Sort-Object works        If you sort it descending the first number will be the biggest so you select that one        Once you have the highest revision number you just add one to it       NextRevision     Revisions Name   Foreach-Object   int    Replace  Revision         Sort-Object -Descending   Select-Object -First 1  1        Now in this we kill two birds with one stone        It will create the  Reports  folder but it also creates  Revision   folder too      New-Item -Path     Project Fullname  Revision NextRevision Reports  -Type Directory        Move on to the next project folder        This untested example loop requires PowerShell version 3 0      PowerShell 3 0 installation

User · Answer

path    C  temp NewFolder  If   test-path  path           New-Item -ItemType Directory -Force -Path  path     Test-Path checks to see if the path exists  When it does not  it will create a new directory

User · Answer

System IO Directory   CreateDirectory  full path to directory    This internally checks for directory existence  and creates one  if there is no directory  Just one line and native  NET method working perfectly

User · Answer

Try the -Force parameter   New-Item -ItemType Directory -Force -Path C  Path That May Or May Not Exist   You can use Test-Path -PathType Container to check first   See the New-Item MSDN help article for more details

User · Answer

Here s a simple one that worked for me   It checks whether the path exists  and if it doesn t  it will create not only the root path  but all sub-directories also    rptpath    C  temp reports exchange   if    test-path -path  rptpath    new-item -path  rptpath -itemtype directory

User · Answer

When you specify the -Force flag  PowerShell will not complain if the folder already exists   One-liner   Get-ChildItem D  TopDirec SubDirec Project           Get-ChildItem    FullName -Filter Revision             New-Item -ItemType Directory -Force -Path  Join-Path    FullName  Reports       BTW  for scheduling the task please check out this link  Scheduling Background Jobs

User · Answer

I wanted to be able to easily let users create a default profile for PowerShell to override some settings  and ended up with the following one-liner  multiple statements yes  but can be pasted into PowerShell and executed at once  which was the main goal    cls   string  filePath    profile   string  fileContents     lt our standard settings gt    if   Test-Path  filePath   md -Force   System IO Path   GetDirectoryName  filePath     Out-Null   fileContents   sc  filePath  Write-Host  File created      else   Write-Warning  File already exists        For readability  here s how I would do it in a  ps1 file instead   cls    Clear console to better notice the results  string  filePath    profile    Declared as string  to allow the use of texts without plings and still not fail   string  fileContents     lt our standard settings gt      Statements can now be written on individual lines  instead of semicolon separated  if   Test-Path  filePath       New-Item -Force   System IO Path   GetDirectoryName  filePath     Out-Null    Ignore output of creating directory    fileContents   Set-Content  filePath    Creates a new file with the input   Write-Host  File created      else     Write-Warning  File already exists  To remove the file  run the command  Remove-Item  filePath

User · Answer

Use    path    C  temp    If    test-path  path         md C  Temp       The first line creates a variable named  path and assigns it the string value of  C  temp   The second line is an If statement which relies on the Test-Path cmdlet to check if the variable  path does not exist  The not exists is qualified using the   symbol  Third line  If the path stored in the string above is not found  the code between the curly brackets will be run    md is the short version of typing out  New-Item -ItemType Directory -Path  path  Note  I have not tested using the -Force parameter with the below to see if there is undesirable behavior if the path already exists   New-Item -ItemType Directory -Path  path

User · Answer

The following code snippet helps you to create a complete path   Function GenerateFolder  path         global foldPath    null     foreach  foldername in  path split                  global foldPath      foldername              if    Test-Path  global foldPath                New-Item -ItemType Directory -Path  global foldPath               Write-Host   global foldPath Folder Created Successfully                      The above function split the path you passed to the function and will check each folder whether it exists or not  If it does not exist it will create the respective folder until the target final folder created   To call the function  use below statement   GenerateFolder  H  Desktop Nithesh SrcFolder

User · Answer

I had the exact same problem  You can use something like this    local   Get-Location   final local    C  Processing    if   local Equals  C            cd  C         if  Test-Path  final local  -eq 0                mkdir  final local          cd  final local          liga                If path already exists        DB Connect     elseif   Test-Path  final local  -eq 1                cd  final local          echo  final local          liga    function created by you TODO something

[windows] Create directory if it does not exist

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