Become familiar with the concept and ways to run commands as "root" - google "mac osx become root". All the installation tasks that are run in a Terminal window require root privileges, since some of the programs and their links are written to /usr/local/bin. (As an alternative that does not require root for installation, one may create a directory $HOME/bin and use that for the programs and links. That would also require modification of the $PATH, by a one-time <code>echo 'export PATH=$PATH:$HOME/bin' >> ~/.profile</code>) | Become familiar with the concept and ways to run commands as "root" - google "mac osx become root". All the installation tasks that are run in a Terminal window require root privileges, since some of the programs and their links are written to /usr/local/bin. (As an alternative that does not require root for installation, one may create a directory $HOME/bin and use that for the programs and links. That would also require modification of the $PATH, by a one-time <code>echo 'export PATH=$PATH:$HOME/bin' >> ~/.profile</code>) |