C:\WINDOWS\Desktop>perl test.pl

---find 1: using system

---------- c:\autoexec.bat: 6
->0<-
$t is the exit code

---find 2: using `backticks`
->
---------- c:\autoexec.bat: 6
<-
$u is the output

---find 3: 100% pure perl
->6<-
$count is the match count
 -or, if you really want the same output format as find-
---------- c:\autoexec.bat: 6