How to rewrite this piece of code under BASH?

Question

bash

Goodnight! There are two pieces of code:
1.

FOR %%F IN (assets lib libs unknown) DO (
  if exist "_INPUT_APK\%~1\%%F" (
    FOR /f "tokens=1* delims= " %%a IN ('sfk list -hidden -quiet -quot -relnames "_INPUT_APK\%~1\%%F" -sincedir "_INPUT_APK\%~1\_backup\%%F" 2^>nul') DO (
      if /I %%F==assets (call :copy2 "_INPUT_APK\%~1\assets\%%~b" "_INPUT_APK\%~1\_backup\upd\0\assets\%%~b")
      if /I %%F==lib (call :copy2 "_INPUT_APK\%~1\lib\%%~b" "_INPUT_APK\%~1\_backup\upd\7\lib\%%~b")
      if /I %%F==libs (call :copy2 "_INPUT_APK\%~1\libs\%%~b" "_INPUT_APK\%~1\_backup\upd\7\libs\%%~b")
      if /I %%F==unknown (call :copy2 "_INPUT_APK\%~1\unknown\%%~b" "_INPUT_APK\%~1\_backup\upd\0\%%~b")
    )

2.

if %delete_resources_in_expert_mode%==ON (
    FOR /f "tokens=1* delims= " %%a IN ('sfk list -hidden -quiet -quot -relnames "_INPUT_APK\%~1\_backup\%%F" -sinceadd "_INPUT_APK\%~1\%%F" 2^>nul') DO (
        if /I %%F==assets (echo assets\%%~b>>"_INPUT_APK\%~1\_backup\upd\delete.list")
        if /I %%F==lib (echo lib\%%~b>>"_INPUT_APK\%~1\_backup\upd\delete.list")
        if /I %%F==libs (echo libs\%%~b>>"_INPUT_APK\%~1\_backup\upd\delete.list")
        if /I %%F==unknown (echo %%~b>>"_INPUT_APK\%~1\_backup\upd\delete.list")
      )
    )

The thought in any way cannot come to mind what functions in BASH to implement all this. Don’t kick too hard, I know that I want a lot, but no ideas came to mind ... Unless to use a cycle, but how ...

Answer 1

Try to build a construct from find and xargs, in which case the loop is not explicitly required.
lots of examples: https://www.google.com/search?q=find+xargs
If this is not enough, then you can add awk, it will be more complicated, but the possibilities are widest.

Answer 2

Take and write. There are loop, conditional, comparison, string parsing operators in bash :)

Answer 3

Maybe you don’t need to fence all these cycles at all, but just read the help on rsync and make everything rsync?
It can compare and copy folders and generate a file.

Answer 4

on your fingers explain what exactly is needed,
I think finde+ xargs{} solves this problem