Android系统下的build.prop文件，用adb shell进入，再进入到system目录，查看该目录下的文件，会看到build.prop文件，用exit命令退出。

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C:\Users\Administrator\Desktop>adb root
adbd is already running as root

C:\Users\Administrator\Desktop>adb remount
remount succeeded
//把文件拉到桌面
C:\Users\Administrator\Desktop>adb pull /system/build.prop
436 KB/s (4474 bytes in 0.010s)
//修改之后，推送回/system/，例如修改了ro.sf.hwrotation=180,使屏幕旋转180°
C:\Users\Administrator\Desktop>adb push C:\Users\Administrator\Desktop\build
p /system/
19 KB/s (4459 bytes in 0.227s)

C:\Users\Administrator\Desktop>adb shell

root@T508AC:/ # cd system/
root@T508AC:/system # ls
app
bin
build.prop
etc
fonts
framework
lib
lost+found
manifest.xml
media
priv-app
tts
usr
vendor
xbin
//执行这个命令才可以生效
root@T508AC:/system # chmod 644 build.prop
//重启设备就可以看到屏幕旋转180读已经生效了
root@T508AC:/system # reboot

build.prop的文件内容：

begin build properties

autogenerated by buildinfo.sh

ro.build.id=LMY49F
ro.build.display.id=rk3288-eng 5.1.1 LMY49F eng.zhangfeng.20190306.051048 test-keys
ro.build.version.incremental=eng.zhangfeng.20190306.051048
ro.build.version.sdk=22
ro.build.version.codename=REL
ro.build.version.all_codenames=REL
ro.build.version.release=5.1.1
ro.build.version.security_patch=2016-03-01
ro.build.version.base_os=
ro.build.date=Wed Mar 6 05:16:23 EST 2019
ro.build.date.utc=1551867383
ro.build.type=eng
ro.build.user=zhangfeng
ro.build.host=build
ro.build.tags=test-keys
ro.build.flavor=rk3288-eng
ro.product.model=T508AC
ro.product.brand=Android
ro.product.name=T508AC
ro.product.device=T508AC
ro.product.board=rk30sdk
ro.jiebao.version=T508AC_OS_E0A_V0.0.29_LYNQ

ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete,

use ro.product.cpu.abilist instead.

ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist=armeabi-v7a,armeabi
ro.product.cpu.abilist32=armeabi-v7a,armeabi
ro.product.cpu.abilist64=
ro.product.manufacturer=rockchip
ro.product.locale.language=zh
ro.product.locale.region=CN
ro.wifi.channels=
ro.board.platform=rk3288

ro.build.product is obsolete; use ro.product.device

ro.build.product=rk3288

Do not try to parse description, fingerprint, or thumbprint

ro.build.description=rk3288-eng 5.1.1 LMY49F eng.zhangfeng.20190306.051048 test-keys
ro.build.fingerprint=Android/rk3288/rk3288:5.1.1/LMY49F/zhangfeng03060514:eng/test-keys
ro.build.characteristics=tablet

end build properties

from device/rockchip/rk3288/system.prop

system.prop

rild.libpath=/system/lib/libreference-ril.so

rild.libargs=-d /dev/ttyUSB2

Default ecclist

ro.ril.ecclist=112,911
ro.opengles.version=196609
wifi.interface=wlan0
rild.libpath=/system/lib/libril-rk29-dataonly.so
rild.libpath.jb=/system/lib/libreference-ril-jb.so
rild.libpath.LYNQ=/system/lib/libreference-ril-LYNQ.so
rild.libpath.HW=/system/lib/libreference-ril-HW.so
rild.libpath.LS=/system/lib/libreference-ril-LS.so
rild.libargs=-d /dev/ttyUSB2
persist.tegra.nvmmlite = 1
ro.audio.monitorOrientation=true

remove red border

persist.sys.strictmode.visual=0
persist.sys.strictmode.disable=1

NFC

debug.nfc.fw_download=false
debug.nfc.se=false

add Rockchip properties here

ro.rk.screenoff_time=60000
ro.rk.screenshot_enable=true
ro.rk.def_brightness=200
ro.rk.homepage_base=http://www.google.com/webhp?client={CID}&source=android-home
ro.rk.install_non_market_apps=false
sys.hwc.compose_policy=6
sys.wallpaper.rgb565=0
sf.power.control=2073600
sys.rkadb.root=0
ro.sf.fakerotation=false
ro.sf.hwrotation=180
ro.rk.MassStorage=false
ro.rk.systembar.voiceicon=true
ro.rk.systembar.tabletUI=false
ro.rk.LowBatteryBrightness=false
ro.tether.denied=false
sys.resolution.changed=false
ro.default.size=100
persist.sys.timezone=
ro.product.usbfactory=rockchip_usb
wifi.supplicant_scan_interval=15
ro.factory.tool=0
ro.kernel.android.checkjni=0

set default lcd density to Rockchip tablet

ro.sf.lcd_density=160
ro.adb.secure=0

ADDITIONAL_BUILD_PROPERTIES

ro.com.android.dateformat=MM-dd-yyyy
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.carrier=unknown
ro.config.alarm_alert=Alarm_Classic.ogg
ro.target.product=tablet
ro.factory.hasGPS=true
dalvik.vm.heapstartsize=16m
dalvik.vm.heapgrowthlimit=192m
dalvik.vm.heapsize=512m
dalvik.vm.heaptargetutilization=0.75
dalvik.vm.heapminfree=512k
dalvik.vm.heapmaxfree=8m
net.dns1=8.8.8.8
net.dns2=8.8.4.4
camera2.portability.force_api=1
persist.sys.strictmode.visual=false
dalvik.vm.jniopts=warnonly
ro.rk.bt_enable=true
ro.factory.hasUMS=true
persist.sys.usb.config=mass_storage
testing.mediascanner.skiplist=/mnt/internal_sd/Android/
ro.factory.storage_suppntfs=true
ro.factory.without_battery=false
keyguard.no_require_sim=true
ro.com.android.dataroaming=true
ril.function.dataonly=1
ro.config.enable.remotecontrol=false
ro.product.version=1.0.0
ro.product.ota.host=www.rockchip.com:2300
persist.sys.dalvik.vm.lib.2=libart.so
dalvik.vm.isa.arm.features=div
ro.kernel.android.checkjni=1
dalvik.vm.image-dex2oat-filter=verify-none
dalvik.vm.dex2oat-filter=interpret-only
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

begin fota properties

ro.fota.platform=RK3288_5.1
ro.fota.type=pad_phone
ro.fota.app=5
ro.fota.oem=jiebao-RK3288_5.1
ro.fota.device=T508AC
ro.fota.version=T508AC_OS_E0A_V0.0.29_LYNQ_20190306-0516

end fota properties