docs: check off fork system call task in README
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@@ -54,7 +54,7 @@ Once a task is completed, it should be checked off.
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- [x] Write a VFS subsystem.
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- [x] Write a VFS driver that provides the contents of the CPIO initial ramdisk to the VFS layer.
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- [x] Create a `hello-world` app. It should print `Hello, World` to its own stdout. The kernel should route this to Qemu and to the VGA dispaly. Ensure this work.
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- [ ] Implement the fork system call.
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- [x] Implement the fork system call.
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- [ ] Implement environment variables. Apps should be able to modify this, and it should be copied to new forks of an app.
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- [ ] Create a basic shell program `sh`. This shell must be able to start the hello-world app. It must include `cd` as a built-in to change the current working directory.
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- [ ] Create an `ls` app. It should list the contents of the current working directory, via the environment variable.
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