gistfile1.sh

gnu_utils=( awk find sed make tail date)

case "$(uname)" in
  (SunOS)
    case "$(uname -v)" in
      (*joyent*)
        gnu_tools_path=/opt/local/bin
        gnu_modifier=""
        ;;
      (*)
        case "$(uname -r)" in
          (5.10)
            gnu_tools_path=/opt/csw/bin
            gnu_modifier="g"
            ;;
          (5.11)
            gnu_tools_path=/usr/gnu/bin
            gnu_modifier=""
            ;;
        esac
        ;;
    esac

    if
      [[ -x $gnu_tools_path/${gnu_modifier}grep ]]
    then
      eval "__rvm_grep() { GREP_OPTIONS=\"\" $gnu_tools_path/${gnu_modifier}grep \"\$@\" || return \$?; }"
    else
      rvm_error "ERROR: Missing GNU grep. Make sure it is installed in $gnu_tools_path/${gnu_modifier}grep before using RVM!"
      exit 1
    fi

    if
      [[ -x $gnu_tools_path/${gnu_modifier}which ]]
    then
      eval "__rvm_which() { $gnu_tools_path/${gnu_modifier}which \"\$@\" || return \$?; }"
    else
      rvm_error "ERROR: Missing GNU grep. Make sure it is installed in $gnu_tools_path/${gnu_modifier}grep before using RVM!"
      exit 1
    fi    

    for gnu_util in "${gnu_utils[@]}"
    do
      if
        [[ -x $gnu_tools_path/$gnu_modifier$gnu_util ]]
      then
        eval "__rvm_$gnu_util() { $gnu_tools_path/$gnu_modifier$gnu_util \"\$@\" || return \$?; }"
      else
        rvm_error "ERROR: Missing GNU $gnu_util. Make sure it is installed in $gnu_tools_path/$gnu_modifier$gnu_util before using RVM!"
        exit 1
      fi
    done
    ;;
  (*)
    __rvm_grep()
    {
      GREP_OPTIONS="" \grep "$@" || return $?
    }

    __rvm_which()
    {
      if command which --skip-alias --skip-functions which >/dev/null 2>&1
      then command which --skip-alias --skip-functions "$@"
      elif command whence whence >/dev/null 2>&1
      then command whence -p "$@"
      elif command which which >/dev/null 2>&1
      then command which "$@"
      elif which which >/dev/null 2>&1
      then which "$@"
      else return 1
      fi
    }

    for gnu_util in "${gnu_utils[@]}"
    do
      eval "__rvm_$gnu_util() { \\$gnu_util \"\$@\" || return \$?; }"
    done
    ;;
esac

unset gnu_tools_path gnu_modifier gnu_util gnu_utils