Powershell Code Snippits and Commands

Conditional or Comparison Operators

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Operator	Definition
#	# The hash key is for comments
+	Add
-	Subtract
*	Multiply
/	Divide
%	Modulus (Some call it Modulo) - Means remainder 17 % 5 = 2 Remainder
=	equal
-not	logical not equal
!	logical not equal
-band	binary and
-bor	binary or
-bnot	binary not
-replace	Replace (e.g. "abcde" –replace "b","B") (case insensitive)
-ireplace	Case-insensitive replace (e.g. "abcde" –ireplace "B","3")
-creplace	Case-sensitive replace (e.g. "abcde" –creplace "B","3")
-and	AND (e.g. ($a -ge 5 -AND $a -le 15) )
-or	OR (e.g. ($a –eq "A" –OR $a –eq "B") )
-is	IS type (e.g. $a -is [int] )
-isnot	IS not type (e.g. $a -isnot [int] )
-as	convert to type (e.g. 1 -as [string] treats 1 as a string )
..	Range operator (e.g. foreach ($i in 1..10) {$i } )
&	call operator (e.g. $a = "Get-ChildItem" &$a executes Get-ChildItem)
. (space)	call operator (e.g. $a = "Get-ChildItem" . $a executes Get-ChildItem in the current scope)
.	.Period or .full stop for an objects properties ($CompSys.TotalPhysicalMemory)
-F	Format operator (e.g. foreach ($p in Get-Process) { "{0,-15} has {1,6} handles" –F
-lt	Less than
-le	Less than or equal to
-gt	Greater than
-ge	Greater than or equal to
-eq	Equal to
-ne	Not Equal to
-contains	Determine elements in a group. (This always returns Boolean $True or $False)
-notcontains	Determine excluded elements in a group (This always returns Boolean $True or $False)
-like	Like - uses wildcards for pattern matching
-notlike	Not Like - uses wildcards for pattern matching
-match	Match - uses regular expressions for pattern matching
-notmatch	Not Match - uses regular expressions for pattern matching
-band	Bitwise AND
-bor	Bitwise OR
-is	Is of Type
-isnot	Is not of Type
if	If condition
elseIf	ElseIF
else	Else
>	Redirect, for example, output to text file (Example .\cmdlet > stuff.txt)
>>	Same as Redirect except it appends to an existing file

Creating HTML Output

Get-Service | Select-object Status, Name, DisplayName | ConvertTo-HTML | Out-File C:\ServiceReport.htm

Formatting HTML Output

$HTM = "<style>table {font-size: 10pt; font-family: Arial;}"
$HTM = $HTM + "BODY{background-color:White;}"
$HTM = $HTM + "TABLE{border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse;}"
$HTM = $HTM + "TH{border-width: 1px;padding: 5px;border-style: solid;border-color: black;background-color:Orange}"
$HTM = $HTM + "TD{border-width: 1px;padding: 5px;border-style: solid;border-color: black;background-color:SkyBlue}"
$HTM = $HTM + "</style>"

Get-Service | Select-Object Status, Name, DisplayName | ConvertTo-HTML -head $HTM –body "<Center><H2><I><U>Service Information</U></I></H2>" | Out-File C:\ServiceReport.htm

Invoke-Expression C:\ServiceReport.htm