Here's the command-line usage for creating an AVD:
android create avd -n -t [- ] ...
Example :
android create avd -n my_android1.5 -t 2
If the target you selected was a standard Android system image ("Type: platform"), the android tool next asks you whether you want to create a custom hardware profile.
Android 1.5 is a basic Android platform.
Do you wish to create a custom hardware profile [no]
Use the create avd command to create a new AVD, specifying the --skin option with a value that references either a default skin name (such as "WVGA800") or a custom skin resolution (such as 240x432). Here's an example:
android create avd -n -t --skin WVGA800
or you can refer from :-
http://developer.android.com/tools/devices/managing-avds-cmdline.html
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