What does the Android dexopt shell command do?
Where can I find a guide?
dexopt is a system tool that is used to create optimized dex files.
dexopt
Source code is available here: https://android.googlesource.com/platform/dalvik-snapshot/+/gingerbread/dexopt/OptMain.c
Documentation is also included in the source ; here is a human-readable version: http://www.netmite.com/android/mydroid/dalvik/docs/dexopt.html