Re: editfiles problem - revisited - Still nobody having an idea what goes wrong?

[Sven Mueller]

Mark.Burgess@iu.hio.no [u] wrote on 03/09/2004 22:40:

> Why can't you Define a class on edit, and then call a restart in processes?

Because all ways of achieving the basic editing task (replace exiting 
lines with the same first field, append line if none matched) I or 
others on the list found so far results in _always_ editing the files 
and _always_ defining that class. using

editfiles:
        { /tmp/aliases
                SetLine "root:xxxxx"
                ReplaceLinesMatchingField 1
                AppendIfNoLineMatching "ThisLine"
                DefineClasses "file edited"
        }

should do the job in theory (from all I read in the documentation), but 
that doesn't work as expected, instead it:
- doesn't replace existing lines and
- always appends the line in question if it wasn't found by exact match.

cu,
sven

> On  3 Sep, Sven Mueller wrote:
>
> > Sven Mueller [u] wrote on 02/09/2004 16:00:
> >
> > Still nobody having an idea of how to solve my problem?
> >
> > In short my problem was that I _need_ to restart a program if I changed 
> > it's config file. But for various reasons, I have to avoid restarting 
> > it, if I didn't change it.
> >
> > The only way I have come up with is using a temporary file, and with 
> > various shellcommands I shouldn't even have available on the machine in 
> > question (diff among them).
> >
> > I am desperately looking for a solution which is maintainable even when 
> > (potentially) updating hundreds of lines in a file.
> >
> > Please also see my additions inserted between the quotes below:
> >
> >
> > > Josef Wolf [u] wrote on 02/09/2004 14:25:
> > >
> > >
> > >
> > > > On Thu, Sep 02, 2004 at 01:52:12PM +0200, Sven Mueller wrote:
> > > >
> > > >
> > > >
> > > >
> > > > > test:x:1:1::/tmp/:/bin/bash
> > > > > test2:x:2:2::/tmp/:/bin/bash
> > > > >
> > > > > Here is what cfagent.conf looks like:
> > > > >
> > > > > control:
> > > > >      actionsequence = ( editfiles )
> > > > >
> > > > > editfiles:
> > > > >      { /tmp/passwd
> > > > >              Backup "Off"
> > > > >              SplitOn ":"
> > > > >              ReplaceLinesMatchingField 1
> > > > >              SetLine "test::::::"
> > > > >              AppendIfNoLineMatching "ThisLine"
> > > > >      }
> > > >
> > > > AFAICS, the ThisLine notation works only in a ForEachLineIn loop. 
> >
> > Hmm, this didn't make a difference. Also, the documentation says:
> > 'If "ThisLine" is given as the argument, the current value of the line 
> > buffer is assumed.'
> > The documentation of "ForEachLineIn" says:
> > 'The result is like using SetLine for each line in the file'
> > And while the SetLine documentation says nothing about a line buffer 
> > (but ForEachLineIn doesn't either), what I gather from the above two 
> > snippets is that 'AppendIfNoLineMatching "ThisLine"' should do exactly 
> > what I expected. But it doesn't.
> >
> > >> You need to give a regexp to AppendIfNoLineMatching. Further,
> > >> ReplaceLinesMatching requires either a ForEachLineIn loop or a SetLine.
> >
> > > > So please try:
> > > >
> > > >        { /tmp/passwd
> > > >                Backup "Off"
> > > >                SplitOn ":"
> > > >                SetLine "test::::::"
> > > >                ReplaceLinesMatchingField 1
> > > >                AppendIfNoLineMatching "test:.*"
> > > >        }
> > >
> > >
> > > Changing it this way still doesn't replace an existing 
> > > "test:x:1:1::/tmp/:/bin/bash" line with the "test::::::" line.
> > >
> > > It doesn't seem to matter wether the ReplaceLinesMatchingField 
> > > instruction is given before or after SetLine. It doesn't do what the 
> > > documentation suggests in either case.
> >
> > I'm really out of wits on this problem.
> >
> > cu,
> > sven
> >
> >
> > _______________________________________________
> > Help-cfengine mailing list
> > Help-cfengine@gnu.org
> > http://lists.gnu.org/mailman/listinfo/help-cfengine
>
>
>
>
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