Method: LinuxStat::User.get_user

Defined in:
lib/linux_stat/user.rb

.get_user ⇒ Object Also known as: get_current_user

Returns the user ID as integer

It directly calls LinuxStat::Sysconf.get_uid and LinuxStat::Sysconf.get_gid

and then reads /etc/passwd and matches the values with UID and GID.

It doesn’t get affected with the assignment of USER environment variable

If either /etc/passwd is readable or LinuxStat::Sysconf.get_login() is not empty.

But if /etc/passwd isn’t readable (which is weird), it will fall back to sysconf.h’s get_login() If that’s not available, like in docker, falls back to ENV.to_s

It should return the username under most robust circumstances. But if nothing is available for some reason, it will return an empty String.

Note that this is not cached or memoized so use this at your own processing expense.



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# File 'lib/linux_stat/user.rb', line 101

def get_user
  unless passwd_readable?
    _l = LinuxStat::Sysconf.().freeze
    return _l.empty? ? ENV['USER'.freeze].to_s : _l
  end

  uid, gid = LinuxStat::Sysconf.get_uid, LinuxStat::Sysconf.get_gid

  username = ''.freeze
  passwd.each { |x|
    splitted = x.split(?:).freeze
    if splitted[2].to_i == uid && splitted[3].to_i == gid
      username = splitted[0]
      break
    end
  }
  username
end