Comparison operators

Comparison operators can be used to compare two values. PowerShell has a wide variety of comparison operators, which are as follows:

• Equal to and not equal to: -eq and -ne
• Like and not like: -like and -notlike
• Greater than and greater than or equal to: -gt and -ge
• Less than and less than or equal to: -lt and -le
• Contains and not contains: -contains and -notcontains
• In and not in: -in and -notin

Values can be directly compared to one another in PowerShell using the equality operators.

eq and ne

The -eq (equal to) and -ne (not equal to) operators perform exact (and, by default, case-insensitive) comparisons. In the following example, true is returned for each of the comparisons:

1 -eq 1
'string' -eq 'string'

Similarly, -ne (not equal) will return true for each of the following:

20 -ne 100
'this' -ne 'that'

When working with comparison expressions, it is important to consider the left...