Mastering Windows PowerShell Scripting - Third Edition

Greater than and less than

When comparing numbers, each of the operators -ge (greater than or equal to), -gt (greater than), -le (less than or equal to), and -lt (less than) are simple to use:

1 -ge 1        # Returns true 
2 -gt 1        # Returns true 
1.4 -lt 1.9    # Returns true 
1.1 -le 1.1    # Returns true 

String comparison with operators follows the generalised pattern of 0123456789aAbBcCdD..., rather than basing it on a character table (such as ASCII):

• Cultural variants of characters, for example, the character å, fall between A and b in the list.
• Other alphabets, for example Cyrillic or Greek, come after the Roman alphabet (after Z).

Comparison can be culture sensitive when using commands such as Sort-Object with the culture parameter, but comparisons ...