Android 常用工作命令mmm,mm,m,croot,cgrep,jgrep,resgrep,godir

官方定义：

Invoke
“. build/envsetup.sh” from your shell to add the following functions to your environment:
– croot:
Changes directory to the top of the tree.

– m: Makes from the top of the tree.

– mm: Builds all of the modules in the current directory.

– mmm: Builds all of the modules in the supplied directories.

– cgrep: Greps on all local C/C++ files.

– jgrep: Greps on all local Java files.

– resgrep: Greps on all local res/*.xml files.

– godir:
Go to the directory containing a file.

即在已经下载好Android源码android目录下面执行：.
build/envsetup.sh 或source build/envsetup.sh,即可开始使用上面命令