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Re: Removing *all* occurrences of a set of lines.


From: Jamie Wilkinson
Subject: Re: Removing *all* occurrences of a set of lines.
Date: Wed, 15 Jan 2003 09:28:41 +1100
User-agent: Internet Messaging Program (IMP) 3.1

Quoting Daniel Pittman <address@hidden>:

> To manage /etc/hosts.allow[1],

> So, can anyone suggest a better way of implementing this?

Dunno if it's better, but I use this recipe for (ssh in) hosts.allow:

control:

  locked_down_machines::

    sshsources = ( .anchor.net.au )

  !locked_down_machines::

    sshsources = ( ALL )

editfiles:

  any::

    { /etc/hosts.allow
      Backup 'off'
      BeginGroupIfNoLineMatching '^sshd:.*'
        Append 'sshd:'
      EndGroup
      ResetSearch 1
      LocateLineMatching '^sshd:.*'
      ReplaceLineWith 'sshd: ${sshsources}'
    }

I find myself using this construct for a lot of configuration files when I need
to check that the option exists and add it if necessary before setting the 
value.

I think that a SetOption command in editfiles that takes a regex and then a
string that does all of this would be quite useful and reduce the complexity of
my scripts ;-)

Jamie




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