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→Obtaining the GNUstep Source Code
Each of these packages needs to be built and installed on your Linux system in order to gain access to the full power of Objective-C and to be able to work with the examples in the remainder of this book. Fortunately a single package called ''GNUstep Startup'' is provided that contains the source code for all four of the above packages. This package can be downloaded from the [ftp://ftp.gnustep.org/pub/gnustep/core/gnustep-startup-0.22.0.tar.gz GNUstep.org website].
Once the package has been download to a suitable work folder it can be unpacked as follows:
<pre>
tar xvfz gnustep-startup-0.22.0.tar.gz
</pre>
The source files will be unpacked into a new directory named ''gnustep-startup-0.22.0''. Change directory into this folder as follows:
<pre>
cd gnustep-startup-0.22.0
</pre>