The Ed package contains a spartan line editor. &buildtime; &ed-time; &diskspace; &ed-compsize; &aa-ed-down; &aa-ed-dep;   Ed isn't something which many people 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. Ed normally uses the mktemp function to create temporary files in /tmp, but this function contains a vulnerability (see the section on Temporary Files in ). Apply the following patch to make Ed use mkstemp instead, a secure way to create temporary files: patch -Np1 -i ../&ed-patch; Now prepare Ed for compilation: ./configure --prefix=/usr --exec-prefix="" The meaning of the configure option: --exec-prefix="": This forces the programs to be installed into the /bin directory. Having the programs available there is useful in the event of the /usr partition being unavailable. Compile the package: make To have the results tested, issue: make check. Install the package: make install &aa-ed-shortdesc; &aa-ed-desc;