Switching between many different languages, I tend to forget the exact names and symbols of the PowerShell operators.
Most of the ones I use have to do with comparison and logic, o here they are:
Most used comparison operators
| Operator | Description |
|---|---|
| -eq | Equal to |
| -lt | Less than |
| -gt | Greater than |
| -ge | Greater than or Eqaul to |
| -le | Less than or equal to |
| -ne | Not equal to |
Logical operators
| Operator | Description |
|---|---|
| -not | Not |
| ! | Not |
| -and | And |
| -or | Or |
I find it funny that you have ! and -not, but not -!. Oh well (:
Talking about logicals: PowerShell can coerce a couple of values to $false, but I’m ambivalent to use that: it does shorten code, but is very PowerShell specific.
Before I forget: an operator that is undervalued, is the -f operator that does formatting.
It uses the standard .NET formatting strings, so that is an easy way to put your .NET knowledge to use. Some further reading on the -f operator:
- Use PowerShell and Conditional Formatting to Format Numbers – Hey, Scripting Guy! Blog – Site Home – TechNet Blogs.
- Windows PowerShell Tip: Formatting Numbers.
–jeroen
via: Conditional Logic | PowerShell Pro! :: PowerShell Pro!.
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