一. Android根目录下 建立 .gitignore文件，内容为：
*.bak*.[o]*~*.swp*.swo*.bakout/v8.logR.java*.img*.logdefault.propertiesbin/gen/*.tmp*.db*.classpathpackages/apps/*/.classpathpackages/apps/Settings/tests/.classpathpackages/apps/Launcher2/lint.xml&1.svn/.goutputstream*project.properties.project
二. kernel目录，可再建一个单独的 .gitignore
## NOTE! Don't add files that are generated in specific# subdirectories here. Add them in the ".gitignore" file# in that subdirectory instead.## NOTE! Please use 'git ls-files -i --exclude-standard'# command after changing this file, to see if there are# any tracked files which get ignored after the change.## Normal rules#.**.o*.o.**.a*.s*.ko*.so*.so.dbg*.mod.c*.i*.lst*.symtypes*.ordermodules.builtin*.elf*.bin*.gz*.bz2*.lzma*.lzo*.patch*.gcno## Top-level generic files#/tags/TAGS/linux/vmlinux/vmlinuz/System.map/module.markers/Module.symvers## git files that we don't want to ignore even it they are dot-files#!.gitignore!.mailmap## Generated include files#include/configinclude/linux/version.hinclude/generated# stgit generated dirspatches-*# quilt's filespatchesseries# cscope filescscope.*ncscope.*# gnu global filesGPATHGRTAGSGSYMSGTAGS*.orig*~\#*#