android 11 custom update

[ytuemrah]

Hi Sir,
I try to develop android system, I have some problems about development.
I get used to ubuntu18 and tag of android 11 is android-11.0.0_r17,
I have built successfully with lunch 30 "aosp_x86-eng" and I have seen $OUT files and checked
then I prepared test_aosp.sh file under ~/bin
the results are like that and no emulator window appears:
$ ./test_aosp.sh
emulator: Android emulator version 30.0.21.0 (build_id 6647651) (CL:N/A)
emulator: Found AVD name 'a25x86'
emulator: Found AVD target architecture: x86
emulator: argv[0]: 'emulator'; program directory: '/home/ubuntu/aosp/prebuilts/android-emulator/linux-x86_64'
PANIC: Cannot find AVD system path. Please define ANDROID_SDK_ROOT

the content of test_aosp.sh is :
#!/bin/sh
emulator -avd a25x86 -verbose -show-kernel -system $OUT/system.img -ramdisk $OUT/ramdisk.img -initdata $OUT/userdata.img

when I checked ROGER YE notes, before that partition he had run ~/Android/Sdk/emulato/emulator @a25x86, also I did it with the last version of android-studio.

Also I try to do following thing but is has loop in the command line and the black window of emulator shows up but not appear any menu and any more:
$ sudo ~/Android/Sdk/emulator/emulator -avd a25x86 -verbose -show-kernel -system $OUT/system.img -ramdisk $OUT/ramdisk.img -initdata $OUT/userdata.img

also I have checked the emulator location with the following command:
$ which emulator
/home/ubuntu/aosp/prebuilts/android-emulator/linux-x86_64/emulator

also I want to add following results, maybe you want to check it:
$ printenv |grep ANDROID
ANDROID_DEV_SCRIPTS=/home/ubuntu/aosp/development/scripts:/home/ubuntu/aosp/prebuilts/devtools/tools:/home/ubuntu/aosp/external/selinux/prebuilts/bin:/home/ubuntu/aosp/prebuilts/misc/linux-x86/dtc:/home/ubuntu/aosp/prebuilts/misc/linux-x86/libufdt
ANDROID_TOOLCHAIN_2ND_ARCH=
ANDROID_PRE_BUILD_PATHS=/home/ubuntu/aosp/prebuilts/jdk/jdk11/linux-x86/bin:
ANDROID_HOST_OUT_TESTCASES=/home/ubuntu/aosp/out/host/linux-x86/testcases
ANDROID_JAVA_TOOLCHAIN=/home/ubuntu/aosp/prebuilts/jdk/jdk11/linux-x86/bin
ANDROID_TARGET_OUT_TESTCASES=/home/ubuntu/aosp/out/target/product/generic_x86/testcases
ANDROID_BUILD_TOP=/home/ubuntu/aosp
ANDROID_BUILD_PATHS=/home/ubuntu/aosp/out/soong/host/linux-x86/bin:/home/ubuntu/aosp/out/host/linux-x86/bin:/home/ubuntu/aosp/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9/bin:/home/ubuntu/aosp/development/scripts:/home/ubuntu/aosp/prebuilts/devtools/tools:/home/ubuntu/aosp/external/selinux/prebuilts/bin:/home/ubuntu/aosp/prebuilts/misc/linux-x86/dtc:/home/ubuntu/aosp/prebuilts/misc/linux-x86/libufdt:/home/ubuntu/aosp/prebuilts/clang/host/linux-x86/llvm-binutils-stable:/home/ubuntu/aosp/prebuilts/android-emulator/linux-x86_64:/home/ubuntu/aosp/prebuilts/asuite/acloud/linux-x86:/home/ubuntu/aosp/prebuilts/asuite/aidegen/linux-x86:/home/ubuntu/aosp/prebuilts/asuite/atest/linux-x86:
ANDROID_EMULATOR_PREBUILTS=/home/ubuntu/aosp/prebuilts/android-emulator/linux-x86_64
ANDROID_PRODUCT_OUT=/home/ubuntu/aosp/out/target/product/generic_x86
ANDROID_PYTHONPATH=/home/ubuntu/aosp/development/python-packages:
ANDROID_TOOLCHAIN=/home/ubuntu/aosp/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9/bin
ANDROID_JAVA_HOME=/home/ubuntu/aosp/prebuilts/jdk/jdk11/linux-x86
ANDROID_HOST_OUT=/home/ubuntu/aosp/out/host/linux-x86

Could you guide me?
Thank you
Regards