Specifies a property to select, and indicates that an attempt should
be made to expand that property. Wildcards are permitted in the
property name.
For example, if the specified property is an array, each value of the
array is included in the output. If the property contains an object,
the properties of that object are displayed in the output.
编辑
PS C:\Users\Lieven\AppData\Local\Temp> gci myfilenametruncatesat30CharactAndThenSome.xlsx | ft -Wrap -AutoSize -Property
name
Name
----
myfilenametruncatesat30CharactAndThenSome.xlsx