Shell (.profile/.bash_profile) script fragment for osx that installs gnu utils using brew

osx_gnu_utils_usage

#
# shell dot-profile fragment
#

is_osx() {
  test "$(uname -s)" = "Darwin"
}

check_is_osx() {
  if ! is_osx; then
    echo "This function is supported only Mac OS X."
    return 1
  fi
  return 0
}

homebrew_install_brew() {
  check_is_osx || return 1
  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
}

homebrew_install_gnu_utils() {
  check_is_osx || return 1
  brew install --with-default-names gnu-getopt coreutils pcre findutils gnu-sed homebrew/dupes/grep
}

homebrew_set_up() {
  check_is_osx || return 1
  #echo "setting brew vars." 1>&2
  if [ -e "/usr/local/bin/readlink" ]; then
    echo "Looks like you don't have readlink installed; type the following:"
    echo ""
    echo "  sudo ln -s /usr/local/bin/greadlink /usr/local/bin/readlink"
    echo ""
  fi

  PATH="/usr/local/opt/gnu-getopt/bin:/usr/local/opt/coreutils/libexec/gnubin:/usr/local/opt/findutils/bin:/usr/local/opt/gettext/bin:/usr/local/opt/grep/bin:/usr/local/bin:$PATH"
  export PATH
}

# this fragment is valid only on OS X
is_osx && homebrew_set_up

# vim:shiftwidth=2 softtabstop=2 expandtab
# EOF