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  3. +50 −0 STATUS
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+This product includes software developed by
+The Apache Software Foundation (
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+Proposal for Exec Package
+28th July 2005
+Executing external processes from Java is a well-known problem area. It is inheriently platform dependent and requires
+the developer to know and test for platform specific behaviors, for example using cmd.exe on Windows or limited buffer
+sizes causing deadlocks. The JRE support for this is very limited, albeit better with the new Java SE 1.5
+ProcessBuilder class.
+Reliably executing external processes can also require knowledge of the environment variables before or after the
+command is executed. In J2SE 1.1-1.4 there is not support for this, since the method, System.getenv(), for retriving
+environment variables is deprecated.
+The are currently several different libraries that for their own purposes has implemented frameworks around
+Runtime.exec() to handle the various issue outlined above. The proposed project should aim at coordinating and
+learning from these initatives to create and maintain a simple, reusable and well-tested package. Since some of the
+more problematic platforms are not readily available, it is my hope that the broad Apache community can be a
+great help.
+Scope of the package
+The package shall create and maintain a process execution package written in the Java language to be distributed
+under the ASF license. The Java code might also be complemented with scripts (e.g. Perl scripts) to fully enable
+execution on some operating systems. The package should aim for supporting a wide range of operating systems while
+still having a consistent API for all platforms.
+Identify the initial source for the package
+Several implementations exists and should be researched before finalizing the design:
+ * Ant 1.X contains probably the most mature code within the exec task. This code has been stripped of the
+ Ant specifics and cleaned up by Niklas Gustavsson and can be donated under the ASF license.
+ * Ideas from
+ * plexus-utils has a similar but slimmer BSD-licensed implementation than Ant that can be reused
+Identify the base name for the package
+Brett Porter
+Stefan Bodewig
+Trygve Laugstol
+Niklas Gustavsson
+Kev Jackson

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