diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+# SPDX-FileCopyrightText: 2022 Tobias Schmidl
+#
+# SPDX-License-Identifier: CC0-1.0
+
+### Vim
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
diff --git a/README.md b/README.md
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+++ b/README.md
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+<!--
+SPDX-FileCopyrightText: 2022 Tobias Schmidl
+
+SPDX-License-Identifier: CC0-1.0
+-->
+
+# qemu-system-boot
+
+shortcuts for qemu-system-xxx
+
+Predefined environment variables:
+
+| Name                | Meaning                                         | Predefined value               |
+| ------------------- | ----------------------------------------------- | ------------------------------ |
+| `QEMU_PUBLIC_SHARE` | A shared folder that is mapped inside the image | `xdg-user-dir PUBLIC_SHARE`    |
+| `QEMU_MEMORY`       | The amount of memory the image is assigned      | `1G`                           |
+| `QEMU_EFI`          | The UEFI binary that is used for that image     | `/usr/share/OVMF/OVMF_CODE.fd` |
+