linux下通过命令行更新android sdk

/usr/share/android/android-sdk-linux/android

$ android update sdk --no-ui

android provide these options for automatic updates:

Action "update sdk":
Updates the SDK by suggesting new platforms to install if available.
Options:
-f --force    Forces replacement of a package or its parts, even if something has been modified
-u --no-ui    Updates from command-line (does not display the GUI)
-o --obsolete Installs obsolete packages
-t --filter   A filter that limits the update to the specified types of packages in the form of
a comma-separated list of [platform, tool, platform-tool, doc, sample, extra]
-s --no-https Uses HTTP instead of HTTPS (the default) for downloads
-n --dry-mode Simulates the update but does not download or install anything

If you want to list which packages are available for installation you can use

$ android list sdk

and you'll obtain an ordered list of packages, for example

Packages available for installation or update: 9
1- ARM EABI v7a System Image, Android API 15, revision 2
2- Intel x86 Atom System Image, Android API 15, revision 1
3- Android Support, revision 8
4- Google AdMob Ads SDK, revision 6
5- Google Analytics SDK, revision 2
6- Google Play APK Expansion Library, revision 1
7- Google Play Billing Library, revision 2
8- Google Play Licensing Library, revision 2
9- Google Web Driver, revision 2

Also you can limit the update only to a desired component if you use the 

--filter

 option

$ android update sdk --filter <component> --no-ui

where component is one or more of
the numbers returned by 

android
list sdk

 (i.e. 1, also know as package index)
add-on
doc
extra
platform
platform-tool
sample
source
system-image
tool

or can be one or more specific identifiers. For instance, if you just want to download a small set of specific packages, you could do this:

$ android update sdk -u --filter platform-tools,android-16,extra-android-support

and you'll just get the platform tools, api level 16 and support package jar. This is really handy if you're building a build machine only and would have to pay for downloading all the extra stuff that you'll never use.

To see the available options you can use --help, for example

$ android --help list sdk

Usage:
android [global options] list sdk [action options]
Global options:
-h --help       : Help on a specific command.
-v --verbose    : Verbose mode, shows errors, warnings and all messages.
--clear-cache: Clear the SDK Manager repository manifest cache.
-s --silent     : Silent mode, shows errors only.

Action "list sdk":
Lists remote SDK repository.
Options:
-o --obsolete  : Deprecated. Please use --all instead.
-a --all       : Lists all available packages (including obsolete and
installed ones)
--proxy-host: HTTP/HTTPS proxy host (overrides settings if defined)
--proxy-port: HTTP/HTTPS proxy port (overrides settings if defined)
-s --no-https  : Uses HTTP instead of HTTPS (the default) for downloads.
-e --extended  : Displays extended details on each package
-u --no-ui     : Displays list result on console (no GUI) [Default: true]

i use this to install and update the sdk on travis-ci

curl --location http://dl.google.com/android/android-sdk_r22.3-linux.tgz | tar -x -z -C $HOME
export ANDROID_HOME=$HOME/android-sdk-linux
export PATH=$PATH:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools
( sleep 5 && while [ 1 ]; do sleep 1; echo y; done ) | android update sdk --no-ui --filter platform-tool,android-19,sysimg-19,build-tools-19.0.1