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file_name="com.wlqq.phantom.plugin.ymm.cargo_1.5.15.apk"
base_name=${file_name/.apk/}
package_name=`echo $base_name | cut -d"_" -f 1`
version_name=`echo $base_name | cut -d"_" -f 2`

echo $package_name # com.wlqq.phantom.plugin.ymm.cargo
echo $version_name # 1.5.15