Convert textures to ETC1 in a batch using etcpack
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I have to convert my game's texture files to ETC (Ericsson Texture Compression) format,
using the command line conversion 


 ---  etcpack img.jpg new-img.jpg


I have 100+ files in a the folder and using the etcpack tool on each file from command line is a pain. 

Can i write a dos script or batch file to do that and how should i do it for all files in my current folder and subfolders.