Comparison operators let you specify conditions for comparing values and finding values that match specified patterns. To use a comparison operator, specify the values that you want to compare together with an operator that separates these values.
Equality
Operators
Description
-eq
equals
-ne
not equals
-gt
greater than
-ge
greater than or equal
-lt
less than
-le
less than or equal
Containment
Operators
Description
-contains
Returns true when reference value contained in a collection
-notcontains
Returns true when reference value not contained in a collection
-in
Returns true when test value contained in a collection
-notin
Returns true when test value not contained in a collection
Matching
Operators
Description
-like
Returns true when string matches wildcard pattern
-notlike
Returns true when string does not match wildcard pattern
Returns true when string does not match regex pattern – $matches contains matching strings
Replacement
Operators
Description
-replace
replace a string pattern
Type comparison
Operators
Description
-is
Returns true if both object are the same type
-isnot
Returns true if the objects are not the same type
By default, all comparison operators in powershell’s are case-insensitive. If we need to make a comparison operator case-sensitive, precede the operator name with a “c”. For example, the case-sensitive version of -eq is -ceq. If we need to the case-insensitivity explicit, precede the operator with an i. For example, the explicitly case-insensitive version of -eq is -ieq. Let we discuss more about the each set of operators in upcoming articles.
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