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tutorial:oc2_writing_code [2014/07/13 13:59] sangar created |
tutorial:oc2_writing_code [2018/01/15 20:16] (current) paparadva Updated screenshots |
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+ | OC Tutorial: Writing Code | ||
+ | ===================== | ||
So, you've [[tutorial:oc1_basic_computer|built your first computer]] and wonder what to do with it? | So, you've [[tutorial:oc1_basic_computer|built your first computer]] and wonder what to do with it? | ||
Well, let's start with the good old, proven, beloved first program. You know which one. First off, let's switch to the `/tmp` folder, which is a small, writable file system each computer comes with. Remember, this gets *wiped on reboot*, so don't put anything valuable in here! | Well, let's start with the good old, proven, beloved first program. You know which one. First off, let's switch to the `/tmp` folder, which is a small, writable file system each computer comes with. Remember, this gets *wiped on reboot*, so don't put anything valuable in here! | ||
- | {{http://i.imgur.com/Mn8vmbv.png?700}} | + | {{https://i.imgur.com/7YdcUbE.png?700}} |
As shown in the image, type `edit <filename>`, where `filename` is the name of the file you wish to edit. The `.lua` extension is absolutely optional, I just like to keep it for syntax highlighting when opening the files in an external editor. | As shown in the image, type `edit <filename>`, where `filename` is the name of the file you wish to edit. The `.lua` extension is absolutely optional, I just like to keep it for syntax highlighting when opening the files in an external editor. | ||
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Once in the editor, start coding. In our case it's just the boring, uncreative-but-proven `print("Hello World!")`. | Once in the editor, start coding. In our case it's just the boring, uncreative-but-proven `print("Hello World!")`. | ||
- | {{http://i.imgur.com/geM4Qiz.png?700}} | + | {{https://i.imgur.com/5F16EEV.png?700}} |
When you're done, press Ctrl+S to save, then press Ctrl+W to close the editor. If you list the contents of the `/tmp` folder now, you'll see the file has been created. Type its name and press enter to run it: | When you're done, press Ctrl+S to save, then press Ctrl+W to close the editor. If you list the contents of the `/tmp` folder now, you'll see the file has been created. Type its name and press enter to run it: | ||
- | {{http://i.imgur.com/CkPSaFK.png?700}} | + | {{https://i.imgur.com/KiHVUMu.png?700}} |
Notice that I didn't type the `.lua` extension when running it. The shell will look for files with that extension if it can't find the file with the exact name you specified. | Notice that I didn't type the `.lua` extension when running it. The shell will look for files with that extension if it can't find the file with the exact name you specified. | ||
If want your programs to survive reboots, **continue by reading on [[tutorial:oc3_hard_drives|how to use hard drives]]**. | If want your programs to survive reboots, **continue by reading on [[tutorial:oc3_hard_drives|how to use hard drives]]**. | ||
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+ | Contents | ||
+ | ------------ | ||
+ | {{page>tutorial:contents&noheader&noeditbutton&nouser&nofooter}} |