diff --git a/README.md b/README.md
index e8fd8816ec27fcf3f37a127e442ae102561db798..2bc2c28e8512d4b5e4eb9509a40368314fcb292a 100644
--- a/README.md
+++ b/README.md
@@ -69,13 +69,13 @@ QEMU applies only to the OpenHarmony kernel.
 1. Install dependencies(Ubuntu 18+)
 
    ```
-   $ sudo apt install build-essential zlib1g-dev pkg-config libglib2.0-dev  binutils-dev libboost-all-dev autoconf libtool libssl-dev libpixman-1-dev virtualenv flex bison
+   sudo apt install build-essential zlib1g-dev pkg-config libglib2.0-dev  binutils-dev libboost-all-dev autoconf libtool libssl-dev libpixman-1-dev virtualenv flex bison
    ```
 
 2. Acquiring Source Code
 
    ```
-   $ wget https://download.qemu.org/qemu-6.2.0.tar.xz
+   wget https://download.qemu.org/qemu-6.2.0.tar.xz
    ```
 
    or
@@ -85,29 +85,29 @@ QEMU applies only to the OpenHarmony kernel.
 3. Compile and install
 
    ```
-   $ tar -xf qemu-6.2.0.tar.xz
-   $ cd qemu-6.2.0
-   $ mkdir build && cd build
-   $ ../configure --prefix=qemu_installation_path
-   $ make -j16
+   tar -xf qemu-6.2.0.tar.xz
+   cd qemu-6.2.0
+   mkdir build && cd build
+   ../configure --prefix=qemu_installation_path
+   make -j16
    ```
 
    Wait for the compilation to finish and execute the installation command:
 
    ```
-   $ make install
+   make install
    ```
 
    Finally, add the installation path to the environment variable:
 
    ```
-   $ vim ~/.bashrc
+   vim ~/.bashrc
    ```
 
    Add the following command line to the last line of ~/.bashrc:
 
    ```
-   $ export PATH=$PATH:qemu_installation_path
+   export PATH=$PATH:qemu_installation_path
    ```
 
 ## Usage<a name="section169045116126"></a>
diff --git a/README_zh.md b/README_zh.md
index 25262f3541db7a30a1c85410dca5dcaea690b0a1..90542b57b9fafb2787cb8bfa9b89a1728e3eac92 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -69,13 +69,13 @@ QEMU可以模拟内核运行在不同的单板，解除对物理开发板的依
 1. 安装依赖(Ubuntu 18+)
 
    ```
-   $ sudo apt install build-essential zlib1g-dev pkg-config libglib2.0-dev  binutils-dev libboost-all-dev autoconf libtool libssl-dev libpixman-1-dev virtualenv flex bison
+   sudo apt install build-essential zlib1g-dev pkg-config libglib2.0-dev  binutils-dev libboost-all-dev autoconf libtool libssl-dev libpixman-1-dev virtualenv flex bison
    ```
 
 2. 获取源码
 
    ```
-   $ wget https://download.qemu.org/qemu-6.2.0.tar.xz
+   wget https://download.qemu.org/qemu-6.2.0.tar.xz
    ```
 
    或
@@ -85,29 +85,29 @@ QEMU可以模拟内核运行在不同的单板，解除对物理开发板的依
 3. 编译安装
 
    ```
-   $ tar -xf qemu-6.2.0.tar.xz
-   $ cd qemu-6.2.0
-   $ mkdir build && cd build
-   $ ../configure --prefix=qemu_installation_path
-   $ make -j16
+   tar -xf qemu-6.2.0.tar.xz
+   cd qemu-6.2.0
+   mkdir build && cd build
+   ../configure --prefix=qemu_installation_path
+   make -j16
    ```
 
    等待编译结束, 执行安装命令:
 
    ```
-   $ make install
+   make install
    ```
 
    最后将安装路径添加到环境变量中:
 
    ```
-   $ vim ~/.bashrc
+   vim ~/.bashrc
    ```
 
    在~/.bashrc最末尾加入:
 
    ```
-   $ export PATH=$PATH:qemu_installation_path
+   export PATH=$PATH:qemu_installation_path
    ```
 
 ## 使用说明<a name="section169045116126"></a>
diff --git a/arm_mps2_an386/README.md b/arm_mps2_an386/README.md
index dc2411e0c035402f5b55bedd6cdd82aaa0d3197b..805ff74bcf1b7f21f2734ac217bc005f13cf251a 100644
--- a/arm_mps2_an386/README.md
+++ b/arm_mps2_an386/README.md
@@ -21,31 +21,31 @@ Compiler install
 Note: Command to install toolchain without arm-none-eabi-gdb, gdb cannot be debugged.
 
 ```
-$ sudo apt install gcc-arm-none-eabi
+sudo apt install gcc-arm-none-eabi
 ```
 
 2.The installation package to install
 
-Note: If you have already passed the command to install gcc-arm-none-eabi, can through the command: `$sudo apt remove
+Note: If you have already passed the command to install gcc-arm-none-eabi, can through the command: `sudo apt remove
 gcc-arm-none-eabi` after unloading, install again.
 
 Download toolchain: [package](https://armkeil.blob.core.windows.net/developer/Files/downloads/gnu-rm/6-2017q2/gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2)。
 
 ```
-$ chmod 777 gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2
-$ tar -xvf gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 install_path
+chmod 777 gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2
+tar -xvf gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 install_path
 ```
 
 Add the installation path to the environment variable:
 
 ```
-$ vim ~/.bashrc
+vim ~/.bashrc
 ```
 
 Add the following command line to the last line of ~/.bashrc:
 
 ```
-$ export PATH=$PATH:install_path/gcc-arm-none-eabi-6-2017-q2-update/bin
+export PATH=$PATH:install_path/gcc-arm-none-eabi-6-2017-q2-update/bin
 ```
 
 #### 3. Code acquisition
@@ -66,7 +66,7 @@ Select `qemu_mini_system_demo` under **ohemu**.
 
 Run the following build command:
 ```
-$ hb build -f
+hb build -f
 ```
 
 This will build `OHOS_Image` for Qemu Cortex-m4 mps2-an386 machine.
@@ -103,8 +103,8 @@ Run a OHOS image in qemu according to the options.
 #### 6. gdb debug
 
 ```
-$ cd device/qemu/arm_mps2_an386
-$ vim liteos_m/config.gni
+cd device/qemu/arm_mps2_an386
+vim liteos_m/config.gni
 ```
 
 In the modified `board_opt_flags` compiler options:
@@ -121,19 +121,19 @@ board_opt_flags = [ "-g" ]
 Save and exit, recompile under OHOS root directory:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 In a window to enter the command:
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 In another window to enter the command:
 
 ```
-$ arm-none-eabi-gdb out/arm_mps2_an386/qemu_mini_system_demo/OHOS_Image
+arm-none-eabi-gdb out/arm_mps2_an386/qemu_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```
diff --git a/arm_mps2_an386/README_zh.md b/arm_mps2_an386/README_zh.md
index 5266bf3e5c6161d3577bd78404b97fb91073a90a..996229ef88c12a717958179a11035f6b3400b768 100644
--- a/arm_mps2_an386/README_zh.md
+++ b/arm_mps2_an386/README_zh.md
@@ -19,30 +19,30 @@ Arm Cortex-m4 虚拟化平台是一个 `qemu-system-arm` 的目标设备，通
 提示：命令安装的工具链无 arm-none-eabi-gdb，无法进行gdb调试
 
 ```
-$ sudo apt install gcc-arm-none-eabi
+sudo apt install gcc-arm-none-eabi
 ```
 
 2.安装包安装
 
-提示：如果已经通过命令安装了gcc-arm-none-eabi， 可以通过命令：`$ sudo apt remove gcc-arm-none-eabi` 卸载之后，再进行安装。
+提示：如果已经通过命令安装了gcc-arm-none-eabi， 可以通过命令：`sudo apt remove gcc-arm-none-eabi` 卸载之后，再进行安装。
 
 下载工具链[安装包](https://armkeil.blob.core.windows.net/developer/Files/downloads/gnu-rm/6-2017q2/gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2)。
 
 ```
-$ chmod 777 gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2
-$ tar -xvf gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 install_path
+chmod 777 gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2
+tar -xvf gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 install_path
 ```
 
 将安装路径添加到环境变量中:
 
 ```
-$ vim ~/.bashrc
+vim ~/.bashrc
 ```
 
 在~/.bashrc最末尾加入:
 
 ```
-$ export PATH=$PATH:install_path/gcc-arm-none-eabi-6-2017-q2-update/bin
+export PATH=$PATH:install_path/gcc-arm-none-eabi-6-2017-q2-update/bin
 ```
 
 ## 3. 获取源码
@@ -64,7 +64,7 @@ hb set
 
 然后执行构建命令如下：
 ```
-$ hb build -f
+hb build -f
 ```
 
 这个命令构建会产生 `OHOS_Image` 的镜像文件。
@@ -99,8 +99,8 @@ Run a OHOS image in qemu according to the options.
 ## 6. gdb调试
 
 ```
-$ cd device/qemu/arm_mps2_an386
-$ vim liteos_m/config.gni
+cd device/qemu/arm_mps2_an386
+vim liteos_m/config.gni
 ```
 
 将 `board_opt_flags` 中的
@@ -118,19 +118,19 @@ board_opt_flags = [ "-g" ]
 保存并退出，在OHOS根目录重新编译:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 在一个窗口中输入命令：
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 在另一个窗口中输入命令：
 
 ```
-$ arm-none-eabi-gdb out/arm_mps2_an386/qemu_mini_system_demo/OHOS_Image
+arm-none-eabi-gdb out/arm_mps2_an386/qemu_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```
diff --git a/arm_mps3_an547/README.md b/arm_mps3_an547/README.md
index 5ea842e54af591baf8c7d26cc845bb9e3fedaf2d..7f33bee6b1b3bd3e92fce8ac519d930121be5dc4 100755
--- a/arm_mps3_an547/README.md
+++ b/arm_mps3_an547/README.md
@@ -20,31 +20,31 @@ Compiler install
 Note: Command to install toolchain without arm-none-eabi-gdb, gdb cannot be debugged.
 
 ```
-$ sudo apt install gcc-arm-none-eabi
+sudo apt install gcc-arm-none-eabi
 ```
 
 2.The installation package to install
 
-Note: The MVE feature of cortex-m55 processor can only be supported by installing the cross tool chain launched after 2020. If you have already passed the command to install gcc-arm-none-eabi, can through the command: `$sudo apt remove
+Note: The MVE feature of cortex-m55 processor can only be supported by installing the cross tool chain launched after 2020. If you have already passed the command to install gcc-arm-none-eabi, can through the command: `sudo apt remove
 gcc-arm-none-eabi` after unloading, install again.
 
 Download toolchain: [package](https://developer.arm.com/-/media/Files/downloads/gnu-rm/10.3-2021.10/gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2)。
 
 ```
-$ chmod 777 gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2
-$ tar -xvf gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2 install_path
+chmod 777 gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2
+tar -xvf gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2 install_path
 ```
 
 Add the installation path to the environment variable:
 
 ```
-$ vim ~/.bashrc
+vim ~/.bashrc
 ```
 
 Add the following command line to the last line of ~/.bashrc:
 
 ```
-$ export PATH=$PATH:install_path/gcc-arm-none-eabi-10.3-2021.10/bin
+export PATH=$PATH:install_path/gcc-arm-none-eabi-10.3-2021.10/bin
 ```
 
 #### 3. Code acquisition
@@ -65,7 +65,7 @@ Select `qemu_cm55_mini_system_demo` under **ohemu**.
 
 Run the following build command:
 ```
-$ hb build -f
+hb build -f
 ```
 
 This will build `OHOS_Image` for Qemu Cortex-m55 mps3-an547 machine.
@@ -103,8 +103,8 @@ Run a OHOS image in qemu according to the options.
 #### 6. gdb debug
 
 ```
-$ cd device/qemu/arm_mps3_an547
-$ vim liteos_m/config.gni
+cd device/qemu/arm_mps3_an547
+vim liteos_m/config.gni
 ```
 
 In the modified `board_opt_flags` compiler options:
@@ -121,19 +121,19 @@ board_opt_flags = [ "-g" ]
 Save and exit, recompile under OHOS root directory:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 In a window to enter the command:
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 In another window to enter the command:
 
 ```
-$ arm-none-eabi-gdb out/arm_mps3_an547/qemu_cm55_mini_system_demo/OHOS_Image
+arm-none-eabi-gdb out/arm_mps3_an547/qemu_cm55_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```
diff --git a/arm_mps3_an547/README_zh.md b/arm_mps3_an547/README_zh.md
index c69a9d405c1feceedfce042640417dd9b5341354..af3995d5bb235652a61a2c48defe1f8216f75d96 100755
--- a/arm_mps3_an547/README_zh.md
+++ b/arm_mps3_an547/README_zh.md
@@ -19,30 +19,30 @@ Arm Cortex-m55 虚拟化平台是一个 `qemu-system-arm` 的目标设备，通
 提示：命令安装的工具链无 arm-none-eabi-gdb，无法进行gdb调试
 
 ```
-$ sudo apt install gcc-arm-none-eabi
+sudo apt install gcc-arm-none-eabi
 ```
 
 2.安装包安装
 
-提示：安装2020年后推出的交叉工具链才能支持cortex-m55处理器的MVE特性。如果已经通过命令安装了gcc-arm-none-eabi， 可以通过命令：`$ sudo apt remove gcc-arm-none-eabi` 卸载之后，再进行安装。
+提示：安装2020年后推出的交叉工具链才能支持cortex-m55处理器的MVE特性。如果已经通过命令安装了gcc-arm-none-eabi， 可以通过命令：`sudo apt remove gcc-arm-none-eabi` 卸载之后，再进行安装。
 
 下载工具链[安装包](https://developer.arm.com/-/media/Files/downloads/gnu-rm/10.3-2021.10/gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2)。
 
 ```
-$ chmod 777 gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2
-$ tar -xvf gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2 install_path
+chmod 777 gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2
+tar -xvf gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2 install_path
 ```
 
 将安装路径添加到环境变量中:
 
 ```
-$ vim ~/.bashrc
+vim ~/.bashrc
 ```
 
 在~/.bashrc最末尾加入:
 
 ```
-$ export PATH=$PATH:install_path/gcc-arm-none-eabi-10.3-2021.10/bin
+export PATH=$PATH:install_path/gcc-arm-none-eabi-10.3-2021.10/bin
 ```
 
 ## 3. 获取源码
@@ -64,7 +64,7 @@ hb set
 
 然后执行构建命令如下：
 ```
-$ hb build -f
+hb build -f
 ```
 
 这个命令构建会产生 `OHOS_Image` 的镜像文件。
@@ -100,8 +100,8 @@ Run a OHOS image in qemu according to the options.
 ## 6. gdb调试
 
 ```
-$ cd device/qemu/arm_mps3_an547
-$ vim liteos_m/config.gni
+cd device/qemu/arm_mps3_an547
+vim liteos_m/config.gni
 ```
 
 将 `board_opt_flags` 中的
@@ -119,19 +119,19 @@ board_opt_flags = [ "-g" ]
 保存并退出，在OHOS根目录重新编译:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 在一个窗口中输入命令：
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 在另一个窗口中输入命令：
 
 ```
-$ arm-none-eabi-gdb out/arm_mps3_an547/qemu_cm55_mini_system_demo/OHOS_Image
+arm-none-eabi-gdb out/arm_mps3_an547/qemu_cm55_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```
diff --git a/arm_virt/liteos_a/README.md b/arm_virt/liteos_a/README.md
index 5dc178bfd64899d5ec23ef4e1cd702042fe7b223..7db9f413d2ee8d9c1f873a6c899fbef43a16addb 100644
--- a/arm_virt/liteos_a/README.md
+++ b/arm_virt/liteos_a/README.md
@@ -81,8 +81,8 @@ sudo apt install gdb-multiarch
 ```
 Then,
 ```
-$ cd ohos/vendor/ohemu/qemu_small_system_demo/kernel_configs
-$ vim debug.config
+cd ohos/vendor/ohemu/qemu_small_system_demo/kernel_configs
+vim debug.config
 ```
 
 Modify `LOSCFG_CC_STACKPROTECTOR_ALL=y` to:
@@ -95,19 +95,19 @@ LOSCFG_COMPILE_DEBUG=y
 Save and exit, recompile under OHOS root directory:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 In a window to enter the command:
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 In another window to enter the command:
 
 ```
-$ gdb-multiarch out/arm_virt/qemu_small_system_demo/OHOS_Image
+gdb-multiarch out/arm_virt/qemu_small_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 ```
 
diff --git a/arm_virt/liteos_a/README_zh.md b/arm_virt/liteos_a/README_zh.md
index 5ba55d05aaefd521bdecab7d64c14fbb75e652ac..0623df2a239d5909073c75f4549ee1a49b38cfd0 100644
--- a/arm_virt/liteos_a/README_zh.md
+++ b/arm_virt/liteos_a/README_zh.md
@@ -85,8 +85,8 @@ sudo apt install gdb-multiarch
 ```
 然后，
 ```
-$ cd ohos/vendor/ohemu/qemu_small_system_demo/kernel_configs
-$ vim debug.config
+cd ohos/vendor/ohemu/qemu_small_system_demo/kernel_configs
+vim debug.config
 ```
 
 将 `LOSCFG_CC_STACKPROTECTOR_ALL=y` 修改为:
@@ -99,19 +99,19 @@ LOSCFG_COMPILE_DEBUG=y
 保存并退出，在OHOS根目录重新编译:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 在一个窗口中输入命令：
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 在另一个窗口中输入命令：
 
 ```
-$ gdb-multiarch out/arm_virt/qemu_small_system_demo/OHOS_Image
+gdb-multiarch out/arm_virt/qemu_small_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 ```
 
diff --git a/riscv32_virt/README.md b/riscv32_virt/README.md
index 65164d02e8ebcf6564aa4622c9067c379e275aee..a4e8867e9f6e97aa83d47617450fc4b0a110d871 100644
--- a/riscv32_virt/README.md
+++ b/riscv32_virt/README.md
@@ -56,8 +56,8 @@ b) Run
 (1) qemu version < 5.0.0
 
 ```
-$ cd device/qemu/riscv32_virt
-$ qemu-system-riscv32 -machine virt -m 128M -kernel ../../../out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image -nographic -append "root=dev/vda or console=ttyS0"
+cd device/qemu/riscv32_virt
+qemu-system-riscv32 -machine virt -m 128M -kernel ../../../out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image -nographic -append "root=dev/vda or console=ttyS0"
 ```
 
 (2). qemu version >= 5.0.0
@@ -86,8 +86,8 @@ If you want to use other kernel exec file, please try `./qemu-run -e [file_name]
 #### 6. gdb debug
 
 ```
-$ cd device/qemu/riscv32_virt
-$ vim liteos_m/config.gni
+cd device/qemu/riscv32_virt
+vim liteos_m/config.gni
 ```
 
 In the modified `board_opt_flags` compiler options:
@@ -105,19 +105,19 @@ board_opt_flags = [ "-g" ]
 Save and exit, recompile under OHOS root directory:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 In a window to enter the command:
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 In another window to enter the command:
 
 ```
-$ riscv32-unknown-elf-gdb out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image
+riscv32-unknown-elf-gdb out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```
diff --git a/riscv32_virt/README_zh.md b/riscv32_virt/README_zh.md
index f0856529bc2a960f71db86099fbef018e17856ae..95cb5996d2ada5002d207b8ea71fe2a65ac53475 100644
--- a/riscv32_virt/README_zh.md
+++ b/riscv32_virt/README_zh.md
@@ -54,8 +54,8 @@ b) 运行
 (1). qemu 版本 < 5.0.0
 
 ```
-$ cd device/qemu/riscv32_virt
-$ qemu-system-riscv32 -machine virt -m 128M -kernel ../../../out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image -nographic -append "root=dev/vda or console=ttyS0"
+cd device/qemu/riscv32_virt
+qemu-system-riscv32 -machine virt -m 128M -kernel ../../../out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image -nographic -append "root=dev/vda or console=ttyS0"
 ```
 
 (2). qemu 版本 >= 5.0.0
@@ -83,8 +83,8 @@ Run a OHOS image in qemu according to the options.
 ## 6. gdb调试
 
 ```
-$ cd device/qemu/riscv32_virt
-$ vim liteos_m/config.gni
+cd device/qemu/riscv32_virt
+vim liteos_m/config.gni
 ```
 
 将 `board_opt_flags` 中的
@@ -102,19 +102,19 @@ board_opt_flags = [ "-g" ]
 保存并退出，在OHOS根目录重新编译:
 
 ```
-$ hb build -f
+hb build -f
 ```
 
 在一个窗口中输入命令：
 
 ```
-$ ./qemu-run -g
+./qemu-run -g
 ```
 
 在另一个窗口中输入命令：
 
 ```
-$ riscv32-unknown-elf-gdb out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image
+riscv32-unknown-elf-gdb out/riscv32_virt/qemu_riscv_mini_system_demo/OHOS_Image
 (gdb) target remote localhost:1234
 (gdb) b main
 ```