From Java, is it possible to get the complete commandline with all arguments that started the application?
System.getEnv() and System.getProperties() do not appear to contain the values.
views:
143answers:
6
A:
In Linux/UNIX that should be possible when you get the output of that command (run in a shell)
cat /proc/$PPID/cmdline
But that is not portable at all and should therefore not be used in Java...
Johannes Weiß
2010-03-29 22:16:43
Ok, thanks. It is ok if it is not portable, however I need it to work on Windows as well.
aksamit
2010-03-29 22:20:34
@aksamit - in other words, you need it to be portable between (at least) Linux and Windows ... duh! @Johannes - "therefore should not be used in Java" is too strong. It is not totally wrong to write non-portable code in Java ... if circumstances require it.
Stephen C
2010-03-29 23:30:31
@Johannes Weiß: so Sun where just out of their mind when they decided to put *Runtime.exec* in right? I mean, it obviously serves no need at all and should be removed from the language to please the "pure Java gods"? Or ?
Webinator
2010-03-30 00:37:10
A:
The following links may help you get there:
How to get command line arguments for a running process
get command-line of running processes
How to get a list of current open windows/process with Java?
Just as a note:
In Windows you have Process Explorer by Sysinternals that shows you the command line used to open the process. Right click the process and select Properties... You'll see Command Line in the window that is opened.
Leniel Macaferi
2010-03-29 22:20:24
A:
You might want to look into how jps does this. It's a Java program that is able to get the full command line for all Java processes, including full class name of main class and JVM options.
Asgeir S. Nilsen
2010-03-29 22:42:26
+3
A:
Some of it is available from the RuntimeMXBean, obtained by calling ManagementFactory.getRuntimeMXBean()
You can then, for example call getInputArguments()
The javadocs for which say:
Returns the input arguments passed to the Java virtual machine which does not include the arguments to the main method. This method returns an empty list if there is no input argument to the Java virtual machine.
Some Java virtual machine implementations may take input arguments from multiple different sources: for examples, arguments passed from the application that launches the Java virtual machine such as the 'java' command, environment variables, configuration files, etc.
Typically, not all command-line options to the 'java' command are passed to the Java virtual machine. Thus, the returned input arguments may not include all command-line options.
Stephen Denne
2010-03-29 22:43:06
A:
One option I've used in the past to maintain the cross-platform-shine is to set the command line as an environment variable prior to issuing the command.
Raymond
2010-03-29 23:23:24
A:
There is a environment variable %~dp0 which returns the complete path
ggonsalv
2010-04-08 17:55:53
Oops.. I forgot it is in windows. Very useful to run switch to UNC path for a batch file. For Example UNC path \\Server\share\folder1\runit.bat if the first line of the batch is pushd %~dp0 then your current path will be \\Server\share\folder1\
ggonsalv
2010-04-17 03:49:37