sigar/bindings/ruby/examples/who.rb

#
# Copyright (c) 2007 Hyperic, Inc.
# Copyright (c) 2010 VMware, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require 'sigar'

def format_time(who)
  return Time.at(who.time).strftime("%b %e %H:%M")
end

sigar = Sigar.new

whos = sigar.who_list

whos.each do |who|
  puts who.user + "\t" + who.device + "\t" + format_time(who) + who.host
end