#6: Document usage of -M command line option

README.md

@@ -17,14 +17,15 @@ Currently supported are
 
 ## Usage
 ```
-java -jar jdump.jar [-f<folder name>] [-A] [-H] [-J] [-d<duration in seconds>] [-N] [-T]
+java -jar jdump.jar [-f<folder name>] [-A] [-H] [-J] [-d<duration in seconds>] [-M] [-N] [-T]
 
 Options:
 start without options to show UI, if not on a headless system
 -f<name>: name of the target folder (will be created if non-existent; current working directoy, if empty)
 -A: produce all types of dumps for all JVMs running locally
 -H: produce heap dumps for all JVMs running locally
 -J: produce JFRs for all JVMs running locally
+-M: produce mallinfo() stats on Linux with glibc
 -d<duration in seconds>: the duration selected for the JFRs, in seconds, default: 5
 -N: product Native Memory Tracks for all JVMs running locally
 -T: produce thread dumps for all JVMs running locally

src/main/java/jdump/cli/CommandLineArguments.java

@@ -58,7 +58,7 @@ private static Optional<String> getLastOf(List<String> argList, String parameter
     }
 
     private void showUsageInformation() {
-        System.out.println("Usage: jdump [-f<folder name>] [-A] [-H] [-J] [-d<duration in seconds>] [-N] [-M] [-T]");
+        System.out.println("Usage: jdump [-f<folder name>] [-A] [-H] [-J] [-d<duration in seconds>] [-M] [-N] [-T]");
         System.out.println();
         System.out.println("Options:");
         System.out.println("start without options to show UI, if not on a headless system");