cmd - What am I doing wrong here while trying to set up Forge for Minecraft mods? -

gradlew setupdecompworkspace mapping 'snapshot_20160518' designed mc 1.9.4! use @ own peril. 

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     forgegradle 2.2-snapshot-c438b06 

https://github.com/minecraftforge/forgegradle

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           powered mcp unknown          http://modcoderpack.com      by: searge, profmobius, fesh0r,      r4wk, zeux, ingiskahn, bspkrs 

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:deobfcompiledummytask :deobfprovideddummytask :getversionjson :extractuserdev up-to-date :extractdependencyats skipped :extractmcpdata skipped :extractmcpmappings skipped :gensrgs skipped :downloadclient skipped :downloadserver skipped :splitserverjar skipped :mergejars skipped :deobfmcsrg skipped :decompilemc failed  failure: build failed exception.  * went wrong: execution failed task ':decompilemc'. > java heap space  * try: run --stacktrace option stack trace. run --info or --debug option more log output.  build failed  total time: 36.311 secs 

any fixing error? got suggestion different page, need little bit more unspecific instructions here:

"in case receive error while running task :decompilemc ( fourth step )

execution failed task ':decompilemc'. gc overhead limit exceeded

assign more ram gradle adding org.gradle.jvmargs=-xmx2g file ~/.gradle/gradle.properties (create file if doesn’t exist)."

please take consideration have limited knowledge of cmd , mild knowledge of java starting out in 'coding' thing. cheers responses come!

are on linux? if type

cd $home/.gradle

then

pico gradle.properties

type in it

org.gradle.jvmargs=-xmx2g

ctrl + x save

then try again.

your java process needs more ram assigned gets default.