#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?s)OUT\s*:?([^:]*):(?=.*?\bWarning\b)(?:(?!OUT).)*(?!.*?\1[:\s]*Warning)"
Local $sString = "OUT :abc123: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)" & @CRLF & _
"OUT :abc123 : : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)" & @CRLF & _
"OUT abc1234: : Warning: / filesystem 100% full" & @CRLF & _
"OUT abc1234: : Warning: / filesystem 100% full" & @CRLF & _
"OUT abc1234: : Warning: /var/tmp/prodperim/installer/abc123.fw is older than it should be (not updated for 36 hours)" & @CRLF & _
"OUT bcd111: : Warning: /var/tmp/prodperim/installer/abc123.fw.schedule is older than it should be (not updated for 36 hours)" & @CRLF & _
"OUT bcd111: : Succeeded."
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($aArray, "Result")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm