The following useful information is primarily taken from the Windows PowerShell Language Quick Reference (QuadFold.rtf) documentation.

For

Format:

1[:label] for ([initializer]; [condition]; [iterator]) {}

Example:

1for ($i=0; $i -lt 5; $i++) { Write-Object $i }

For Each

Format:

1[:label]
2
3foreach (identifier in collection) {}
4
5Expression | foreach {}
6
7Expression | foreach {BEGIN{} PROCESS{} END{}}

Examples:

1$i = 1,2,3
2foreach ($z in $i) { Write-Object $z } 
3
4Get-Process | foreach {
5    BEGIN{$x=1}
6    PROCESS{$X++} 
7    END{"$X Processes"}
8}

1do
2{ 
3    ...
4} until (condition)

1[:label] while (condition)
2{
3    ...
4}

1do
2{ 
3    ...
4} while (condition)

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