Код:
param(
$PathIn = "C:\Files\111",
$PathOut = "C:\result.txt",
$words = ("serVeR","БоЧкА"),
$delims = ("-"," ", "=",":")
)cls
gci $pathin *.txt -rec|%{(((gc $_.FullName -raw)|
sls "(?<=($($words -join '|'))).*" -all).Matches.
Value).TrimStart($delims).Trim()|%{if($_ -notin $t)
{$_|out-file $PathOut -append;[string[]]$t+= $_}}}