$ find . -name  "*MediaScanner*"

# adb push  图片/p1.jpg /sdcard/

# cp -r out/target/product/generic/system.img out/target/product/generic/ramdisk.img out/target/product/generic/userdata.img /home/zhanglibin/program/android-sdk-linux_86/platforms/android-8/images/

# ps -ef

# kill

$ sudo apt-get install git-core

# update-alternatives --config java 

# update-alternatives --config javac 

打开pdf命令:xdg-open xxxx.pdf
evince xxx.pdf //会阻塞终端

打开目录命令:gnome-open url
打开主目录命令nautilus

可以把它alias一下:
.bashrc
  alias openpdf='xdg-open'
  alias nautilus='opendir'