I was trying to find a way in powershell to remove more than one white space.
But what i found is how to do it in php. "Removing more than one white-space"
There will be similar regular expression may available .
How to acheive the same in powershell?
My string is like this
Xcopy Source Desination
Some lines may contain more than one white space between Source and destination.
If you're looking to collapse multiple consecutive whitespace characters into a single space then you can do this using the -replace operator:
'[ Hello, World! ]' -replace '\s+', ' '
...returns...
[ Hello, World! ]
The first parameter to -replace is a regular expression pattern to match, and the second parameter is the text that will replace any matches. \s will match a whitespace character, and + indicates to match one or more occurrences, so, in other words, one or more adjacent whitespace characters will be replaced with a single space. Enter help about_comparison_operators or see here for more information.
来源：https://stackoverflow.com/questions/8686816/removing-more-than-one-white-space-in-powershell