a
    Get-Acl                   Get permission settings for a file or registry key
    Set-Acl                   Set permissions
    Get-Alias           gal   Return alias names for Cmdlets
 Import-Alias          ipal   Import an alias list from a file
    New-Alias           nal   Create a new alias.
    Set-Alias           sal   Create or change an alias
   Get-AuthenticodeSignature  Get the signature object associated with a file
   Set-AuthenticodeSignature  Place a signature in a .ps1 script or other file
c
   Set-Location  cd/chdir/sl  Set the current working location
   Get-ChildItem   dir/ls/gci Get child items (contents of a folder or registry key)
     Clear-Host    clear/cls  Clear the screen
     Clear-Item         cli   Remove content from a variable or an alias
       Get-Command      gcm   Retrieve basic information about a command
   Measure-Command            Measure running time
     Trace-Command            Trace an expression or command
        Add-Computer          Add a computer to the domain
 Checkpoint-Computer          Create a system restore point (XP)
    Restore-Computer          Restore the computer to a previous state
     Add-Content         ac   Add to the content of the item
     Get-Content cat/type/gc  Get content from item (specific location)
     Set-Content         sc   Set content in the item (specific location)
   Clear-Content        clc   Remove content from a file/item
     Get-Command        gcm   Get basic information about cmdlets
  Invoke-Command        icm   Run command
   Enable-ComputerRestore     Enable System Restore on a drive
   Disable-ComputerRestore    Disable System Restore on a drive
   Get-ComputerRestorePoint   Get the restore points on the local computer
   ConvertFrom-CSV            Convert object properties (in CSV format) into CSV objects
   ConvertTo-CSV              Convert .NET Framework objects into CSV variable-length strings
   ConvertTo-Html             Convert the input into an HTML table
   ConvertTo-Xml              Convert the input into XML
   ConvertFrom-SecureString   Convert a secure string into an encrypted standard string
   ConvertTo-SecureString     Convert an encrypted standard string into a secure string
   Copy-Item     copy/cp/ci   Copy an item from a namespace location
   Export-Counter             Export Performance Counter data to log files
      Get-Counter             Get performance counter data
   Import-Counter             Import performance counter log files

   Get-Credential             Get a security credential (username/password)
   Get-Culture                Get region information (language and keyboard layout)
d
   Get-ChildItem   Dir/ls/gci Get child items (contents of a folder or registry key)
   Get-Date                   Get current date and time
   Set-Date                   Set system time on the host system
   Remove-Item  Del/erase/rd/rm/rmdir   Delete an item
   Compare-Object diff/compare   Compare the properties of objects
   Do                         Loop while a condition is True
e
     Get-Event                Get events in the event queue
     Get-WinEvent             Get events from event logs and event trace logs
     New-Event                Create a new event
  Remove-Event                Delete events from the event queue
 Unregister-Event             Cancel an event subscription
   Clear-EventLog             Delete all entries from an event log
     Get-Eventlog             Get event log data
     New-Eventlog             Create a new event log and a new event source
  Remove-EventLog             Delete an event log
   Get-EventSubscriber        Get event subscribers
Register-EngineEvent          Subscribe to powershell events
Register-ObjectEvent          Subscribe to .NET events
   Register-WmiEvent          Subscribe to a WMI event
   Get-ExecutionPolicy        Get the execution policy for the shell
   Set-ExecutionPolicy        Change the execution policy (user preference)
   Export-Alias         epal  Export an alias list to a file
   Export-Clixml              Produce a clixml representation of powershell objects
   Export-Console             Export console configuration to a file
   Export-Csv          epcsv  Export to Comma Separated Values (spreadsheet)
   Exit                       Exit Powershell (or exit a script)
f
   ForEach-Object    foreach  Loop for each object in the pipeline ( % )
   ForEach                    Loop through values in the pipeline
   For                        Loop through items that match a condition
   Format-Custom         fc   Format output using a customized view
   Format-List           fl   Format output as a list of properties, each on a new line
   Format-Table          ft   Format output as a table
   Format-Wide           fw   Format output as a table listing one property only
  Export-FormatData           Save formatting data from the current session 
     Get-FormatData           Get the formatting data in the current session
g
   Get-Item              gi   Get a file/registry object (or any other namespace object)
   Get-ChildItem   dir/ls/gci Get child items (contents of a folder or registry key)
h
   Get-Help            help   Open the help file
     Add-History              Add entries to the session history
   Clear-History       clhy   Delete entries from the session history
     Get-History  history/h/ghy Get a listing of the session history
  Invoke-History     r/ihy    Invoke a previously executed Cmdlet
     Get-Host                 Get host information (PowerShell Version and Region)
   Clear-Host      clear/cls  Clear the screen
    Read-Host                 Read a line of input from the host console
   Write-Host                 Display message on screen
     Get-HotFix               Get Installed hotfixes
i
   if                         Conditionally perform a command
   Import-Clixml              Import a clixml file and rebuild the PS object
   Import-Csv         ipcsv   Take values from a CSV list and send objects down the pipeline.
      Get-Item           gi   Get a file object or get a registry (or other namespace) object
   Invoke-Item           ii   Invoke an executable or open a file (START)
   Invoke-Expression    iex   Run a PowerShell expression
      New-Item           ni   Create a new item in a namespace
   Remove-Item  rm/del/erase/rd/ri/rmdir   Remove an item
      Set-Item           si   Change the value of an item
    Clear-ItemProperty  clp   Remove the property value from a property
     Copy-ItemProperty  cpp   Copy a property along with it's value
      Get-ItemProperty   gp   Retrieve the properties of an object
     Move-ItemProperty   mp   Move a property from one location to another
      New-ItemProperty        Set a new property
   Remove-ItemProperty   rp   Remove a property and its value
   Rename-ItemProperty  rnp   Renames a property at its location
      Set-ItemProperty   sp   Set a property at the specified location to a specified value
j
       Get-Job          gjb   Get PowerShell background jobs that are running
   Receive-Job         rcjb   Get PowerShell background job results
    Remove-Job          rjb   Delete a PowerShell background job
     Start-Job         sajb   Start a PowerShell background job
      Stop-Job         spjb   Stop a PowerShell background job
      Wait-Job          wjb   Wait for background job
k
   Stop-Process    kill/spps  Stop a running process
l
   Get-Location    pwd / gl   Get and display the current location
   Pop-Location        popd   Set the current working location from the stack
  Push-Location       pushd   Push a location to the stack
   Set-Location  cd/chdir/sl  Set the current working location
m
   Add-Member                 Add a member to an instance of a PowerShell object
   Get-Member            gm   Enumerate the properties of an object
    Get-Module          gmo   Get the modules imported to the session
 Import-Module         ipmo   Add a module to the session
    New-Module          nmo   Create a new dynamic module (only in memory)
 Remove-Module          rmo   Remove a module from the current session
   Move-Item      mv/move/mi  Move an item from one location to another
o
  Compare-Object diff/compare Compare the properties of objects
    Group-Object       group  Group objects that contain the same value
  Measure-Object              Measure the properties of an object
      New-Object              Create a new .Net object
   Select-Object      select  Select properties of objects
     Sort-Object        sort  Sort objects by property value
    Where-Object              Filter the objects passed along the command pipeline
   Out-Default                Send output to default
   Out-File                   Send command output to a file
   Out-GridView         ogv   Send output to an interactive table
   Out-Host              oh   Send the pipelined output to the host
   Out-Null                   Send output to null
   Out-Printer           lp   Send the output to a printer
   Out-String                 Send objects to the host as strings
p
   Powershell                 Launch a powershell session
   Convert-Path        cvpa   Convert a ps path to a provider path
      Join-Path               Combine a path and child-path
   Resolve-Path        rvpa   Resolves the wildcards in a path
     Split-Path               Return part of a path
      Test-Path               Return true if the path exists, otherwise return false
 Get-Pfxcertificate         Get pfx certificate information
    Pop-Location       popd   Set the current working location from the stack
   Push-Location      pushd   Push a location to the stack
     Get-Process     ps/gps   Get a list of processes on a machine
   Debug-Process              Attach a debugger to a running process
   Start-Process  start/saps  Start one or more processes
    Stop-Process   kill/spps  Stop a running process
   Enable-PSBreakpoint  ebp   Enable a breakpoint in the current console
  Disable-PSBreakpoint  dbp   Disable a breakpoint in the current console
      Get-PSBreakpoint  gbp   Get the currently set breakpoints
      Set-PSBreakpoint  sbp   Set a breakpoint on a line, command, or variable
   Remove-PSBreakpoint  rbp   Delete breakpoints from the current console
      Get-PSDrive       gdr   Get drive information (DriveInfo)
      New-PSDrive   mount/ndr Install a new drive on the machine
   Remove-PSDrive       rdr   Remove a provider/drive from its location
      Get-PSProvider          Get information for the specified provider
      Set-PSdebug             Turn script debugging on or off
    Enter-PSSession  etsn     Start an interactive session with a remote computer
     Exit-PSSession  exsn     End an interactive session with a remote computer
   Export-PSSession  epsn     Import commands and save them in a PowerShell module
      Get-PSSession   gsn     Get the PSSessions in the current session
   Import-PSSession  ipsn     Import commands from another session
      New-PSSession   nsn     Create a persistent connection to a local or remote computer
   Remove-PSSession   rsn     Close PowerShell sessions
    Disable-PSSessionConfiguration  Deny access to PS session configuration
     Enable-PSSessionConfiguration  Enable PS session configuration
        Get-PSSessionConfiguration  Get the registered PS session configuration
   Register-PSSessionConfiguration  Create and register a new PS session configuration
 Unregister-PSSessionConfiguration  Delete registered PS session configuration
   Add-PsSnapIn        asnp   Add snap-ins to the console
   Get-PsSnapin        gsnp   List PowerShell snap-ins on this computer
   Remove-PSSnapin     rsnp   Remove PowerShell snap-ins from the console
q
   Quest AD cmdlets           Read and write to Active Directory
r
   Read-Host                  Read a line of input from the host console
   Remove-Item  rm/del/erase/rd/ri/rmdir   Remove an item
   Rename-Item      ren/rni   Change the name of an existing item
   Rename-ItemProperty        Rename a property of an item
   Run/Call             &     Run a command (call operator)
s
   Select-Object     select   Select properties of objects
       Get-Service      gsv   Get a list of services
       New-Service            Create a new service
   Restart-Service            Stop and then restart a service
    Resume-Service            Resume a suspended service
       Set-Service            Change the start mode/properties of a service
     Start-Service     sasv   Start a stopped service
      Stop-Service     spsv   Stop a running service
   Suspend-Service            Suspend a running service
   Sort-Object         sort   Sort objects by property value
   Start-Sleep        sleep   Suspend shell, script, or runspace activity
   Switch                     Multiple if statements
   ConvertFrom-StringData     Convert a here-string into a hash table
   Select-String              Search through strings or files for patterns
t
   Tee-Object           tee   Send input objects to two places
   New-Timespan               Create a timespan object
   Trace-Command              Trace an expression or command
   Get-Tracesource            Get components that are instrumented for tracing.
   Set-Tracesource            Trace a PowerShell component
     Start-Transaction        Start a new transaction 
  Complete-Transaction        Commit the transaction
       Get-Transaction        Get information about the active transaction
       Use-Transaction        Add a command or expression to the transaction
      Undo-Transaction        Roll back a transaction
   Start-Transcript           Start a transcript of a command shell session
    Stop-Transcript           Stop the transcription process
   Add-Type                   Add a .NET Framework type to a PowerShell session
   Update-TypeData
u
   Get-Uiculture              Get the ui culture information
   Get-Unique            gu   Get the unique items in a collection
    Update-Formatdata         Update and append format data files
    Update-Typedata           Update the current extended type configuration
v
   Clear-Variable       clv   Remove the value from a variable
     Get-Variable        gv   Get a powershell variable
     New-Variable        nv   Create a new variable
  Remove-Variable        rv   Remove a variable and its value
     Set-Variable    set/sv   Set a variable and a value
w
   Where-Object      where/?  Filter input from the pipeline
   Where                      Filter objects from the pipeline
   While                      Loop while a condition is True
   Write-Debug                Write a debug message to the host display
   Write-Error                Write an object to the error pipeline.
   Write-Output   write/echo  Write an object to the pipeline
   Write-Progress             Display a progress bar
   Write-Verbose              Write a string to the host's verbose display
   Write-Warning              Write a warning message
    Set-WmiInstance           Create or update an instance of an existing WMI class
 Invoke-WmiMethod      iwmi   Call WMI methods
    Get-WmiObject      gwmi   Get WMI class information
 Remove-WmiObject      rwmi   Delete an instance of a WMI class
    Connect-WSMan             Connect to the WinRM service on a remote computer
 Disconnect-WSMan             Disconnect from the WinRM service on a remote computer
       Test-WSMan             Test whether the WinRM service is running
  Invoke-WSManAction          Invoke an action on a specified object
 Disable-WSManCredSSP         Disable Credential Security Service Provider (SSP) authentication
  Enable-WSManCredSSP         Enable Credential SSP authentication
     Get-WSManCredSSP         Get the Credential SSP configuration
   New-WSManInstance                                                                                                         
   Get-WSManInstance          Display management information (XML or value)
   Set-WSManInstance          Modify the management information related to a resource
   Set-WSManQuickConfig       Configure the local computer for remote management
   New-WSManSessionOption
   #                          Comment / Remark
   ?                          Alias for Where-Object
   $variable = "value"        Define a variable  also: ${n!a#me} = "value"
   @(...)                     Force an expression to be evaluated as an array

The cmdlets on this page are listed in A-Z order, matching either the Verb- or -Noun or Alias of the cmdlet (some are listed more than once).


In addition to the above, Powershell can also run all the standard CMD commands (apart from internal commands), plus VBScript and Resource kit utilities.


Related:
   Microsoft: PowerShell 2.0 core and PowerShell Scripting help , Exchange 2010 cmdlets & SQL Server 2008
   Discussion forum,
   Links to other websites, books etc...