[augeas-devel] Help matching a PAM config line

[Tim Bishop]

Hi,

I'd like to ask for some Augeas help. I'm trying to match a specific PAM
config line so I can append something to it. The relevant lines are:

session    optional     pam_motd.so  motd=/run/motd.dynamic noupdate
session    optional     pam_motd.so # [1]

What I want to do is add "noupdate" to second line.

I've done something similar previously using Puppet with this block:

  augeas { "disableupdates-$name":
    context => "/files/etc/pam.d/$name",
    changes => [
      "ins argument after *[module = 'pam_motd.so']/module",
      "set *[module = 'pam_motd.so']/argument 'noupdate'",
    ],
    onlyif  => "match *[module = 'pam_motd.so' and argument='noupdate'] size == 0",
    notify  => Exec['pam-auth-update'],
  }

But at the time the PAM config only contained this line:

session    optional     pam_motd.so # [1]

This no longer works because my onlyif statement matches on the new line
before it.

So I'd like some help to modify the above code to only match and modify
the second line. Or maybe there's another way that I've not thought of?

Thank you in advance,

Tim.

-- 
Tim Bishop
http://www.bishnet.net/tim/
PGP Key: 0x6C226B37FDF38D55