This package requires its patch to be applied before you can install it. Make sure it's unpacked before running the installation commands. Ed isn't something you would personally use. It's installed here because it can be used by the patch program if you encounter an ed-based patch file. This happens rarely because diff-based patches are preferred these days. Install Ed by running the following commands: patch -Np1 -i ../ed-&ed-patch-version;.patch && ./configure --prefix=/usr && make && make install && mv /usr/bin/{ed,red} /bin