remove empty lines from text file with PowerShell

Question

I know that I can use:

gc c:\\FileWithEmptyLines.txt | where {$_ -ne \"\"} > c:\\FileWithNoEmptyLines.txt

to remove empty lines. But How

Answer 1

Not specifically using -replace, but you get the same effect parsing the content using -notmatch and regex.

(get-content 'c:\FileWithEmptyLines.txt') -notmatch '^\s*$' > c:\FileWithNoEmptyLines.txt