1. sqlite 设置代理服务器：
sqlite3 /data/data/com.android.providers.settings/databases/settings.db "INSERT INTO system VALUES(99,'http_proxy','10.10.26.252:1080')"
删除代理服务器：
sqlite3 /data/data/com.android.providers.settings/databases/settings.db "DELETE FROM system WHERE _id=99"
查询
sqlite3 /data/data/com.android.providers.settings/databases/settings.db "SELECT * FROM system"