Linux::Utmpx::UtmpxParser

Helper library to parse /var/log/wtmp, /var/run/utmp.

Installation

Add this line to your application's Gemfile:

gem 'linux-utmpx'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install linux-utmpx

Usage

Read all records in /var/log/wtmp.

io = File.open("/var/log/wtmp")
parser = Linux::Utmpx::UtmpxParser.new
while !io.eof? do
  puts parser.read(io)
end

Supported fields

Linux::Utmpx::UtmpxParser supports to read the following fields.

parameter type description
ut_type integer Type of login
ut_pid integer Process ID of login process
ut_line string Device name
ut_id string Inittab ID
ut_user string Username
ut_host string Hostname for remote login
ut_tv BinData::Record Time entry

For making access easy, these accessor methods are provided.

parameter type description
type integer Type of login. It returns :EMPTY, :RUN_LVL, :BOOT_TIME, :NEW_TIME, :OLD_TIME, :INIT_PROCESS, :LOGIN_PROCESS, :USER_PROCESS, :DEAD_PROCESS or :ACCOUNTING.
pid integer Process ID of login process
line string Device name
id string Inittab ID
user string Username
host string Hostname for remote login
time Time Time entry.it returns the value of Time.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test-unit to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/fluent-lugins-nursery/linux-utmpx.

License

The gem is available as open source under the terms of the MIT License.