Added more help to README

Author: voidcoefficient

README.md

@@ -1,4 +1,20 @@
 # Oxygen
+# downloading and building dash
+git clone git://git.kernel.org/pub/scm/utils/dash/dash.git dash
+cd dash
+sh autogen.sh
+sh configure.sh --enable-static
+make
+# creating an enviroment for dash
+mkdir -p ../oxygen_dash/bin
+cp src/dash ../oxygen_dash/bin
+cd ..
+# now we download and install oxygen
+git clone https://github.com/paulo-e/oxygen oxygen
+cd oxygen
+RUSTFLAGS='-C target-feature=+crt-static' cargo install --path . --root=../oxygen_dash/
+cd ..
+sudo chroot oxygen_dash /bin/dash
 
 [![Rust](https://github.com/paulo-e/oxygen/actions/workflows/rust.yml/badge.svg)](https://github.com/paulo-e/oxygen/actions/workflows/rust.yml)
 
@@ -9,8 +25,34 @@ Do as follows:
 ```sh
 git clone https://github.com/paulo-e/oxygen oxygen
 cd oxygen
-cargo build
+cargo build --release
+# now all the programs are in ./target/release
+ls ./target/release
+# you can also install the files (default path is $HOME/.cargo/bin) with
+cargo install --path .
+```
+
+## Testing
+Optionally, you can test the userspace on a controlled enviroment
+
+``` sh
+# downloading and building dash git clone git://git.kernel.org/pub/scm/utils/dash/dash.git dash
+cd dash
+sh autogen.sh
+sh configure.sh --enable-static
+make
+# creating an enviroment for dash
+mkdir -p ../oxygen_dash/bin
+cp src/dash ../oxygen_dash/bin
+cd ..
+# now we download and install oxygen
+git clone https://github.com/paulo-e/oxygen oxygen
+cd oxygen
+RUSTFLAGS='-C target-feature=+crt-static' cargo install --path . --root=../oxygen_dash/
+cd ..
+sudo chroot oxygen_dash /bin/dash
+# now you can try all the installed programs
 ```
 
-# License
+## License
 [It's the BSD 3-clause license](https://github.com/paulo-e/oxygen/blob/master/LICENSE)