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→Ubuntu Jammy system
<li><p>Ubuntu Jammy has a gcc compilation tool chain installed by default, which can directly compile C language programs in the Linux system of the development board</p>
<ol style="list-style-type: lower-alpha;">
<li>The version of gcc is as follows</li></ol></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''gcc --version'''
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|}</ol>
<ol start="2" style="list-style-type: lower-alpha;">
<li>Write the '''hello_world.c''' program in C language</li></ol>{| class="wikitable" style="width:800px;" |-| orangepi@orangepi:~$ '''vim hello_world.c'''
int main(void)
{
:printf("Hello World!\n");
:return 0;
}
|}</ol>
<ol start="3" style="list-style-type: lower-alpha;">
<li>Then compile and run '''hello_world.c'''</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''gcc -o hello_world hello_world.c'''
Hello World!
|}</ol></li></ol>
<ol start="2" style="list-style-type: decimal;">
<li><p>Ubuntu Jammy has Python3 installed by default</p>
<ol style="list-style-type: lower-alpha;">
<li>The specific version of Python3 is as follows</li></ol></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''python3'''
>>>
|}</ol>
<ol start="2" style="list-style-type: lower-alpha;">
<li>Write '''hello_world.py''' program in Python language</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''vim hello_world.py'''
print('Hello World!')
|}</ol>
<ol start="3" style="list-style-type: lower-alpha;">
<li>The result of running '''hello_world.py''' is as follows</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''python3 hello_world.py'''
Hello World!
|}</ol></li></ol>
<ol start="3" style="list-style-type: decimal;">
<li><p>Ubuntu Jammy does not install Java compilation tools and runtime environment by default</p>
<ol style="list-style-type: lower-alpha;">
<li>You can use the following command to install openjdk-18</li></ol></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''sudo apt install -y openjdk-18-jdk'''
|}</ol>
<ol start="2" style="list-style-type: lower-alpha;">
<li>After installation, you can check the version of Java</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''java --version'''
OpenJDK 64-Bit Server VM (build 18-ea+36-Ubuntu-1, mixed mode, sharing)
|}</ol>
<ol start="3" style="list-style-type: lower-alpha;">
<li>Write the Java version '''hello_world.java'''</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''vim hello_world.java'''
{
:public static void main(String[] args)
:{
::System.out.println("Hello World!");
:}
}
|}</ol>
<ol start="4" style="list-style-type: lower-alpha;">
<li>Then compile and run '''hello_world.java'''</li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''javac hello_world.java'''
Hello World!
|}
</ol>
</li></ol>
<span id="how-to-install-qt"></span>
== How to install QT ==
