Is there a check out lock in hg ?

[T.J. Yang]

>From: "John D. Mitchell" <jdmitchell at gmail.com>
>To: "T.J. Yang" <tj_yang at hotmail.com>
>CC: mercurial at selenic.com
>Subject: Re: Re: Re: Is there a check out lock in hg ?
>Date: Fri, 15 Dec 2006 16:08:00 -0800
>
>On 12/15/06, T.J. Yang <tj_yang at hotmail.com> wrote:
>[...]
>> >>I don't really know. All I know now this locking feature is very
>> >>essential feature for rcs users to migrate over to hg.
>> >
>> >Why?  If they want to continue with a centralized, pessimistic-locking
>> >based process why would they bother with a decentralized SCM system at
>> >all?  There are plenty of centralized SCMs that support pessimistic
>> >locking that are big improvements over rcs.
>>
>>Actually, I am using RCS as decentralized SCM. that is why I am
>>interested about hg. Also I am using it for Unix system configuration file
>>SCM not source code SCM. I shouldn't have said rcs users(implied all 
>>others), it
>>should be just my case.
>
>Anybody with any words of wisdom about using hg for system config
>files?  I've been using hg only for source code so far.  The first
>issue that comes to mind given my experiences is that hg doesn't yet
>support symlinks.

Thanks for bring this up, I don't need symlinks yet.

>>hg without file locking support will be just another cons I need to 
>>consider
>>before I push for the change(switching from  RCS).
>
>Sorry for being dense but that "requirement" still doesn't make any
>sense to me.  If you're using a DSCM model then where is your need for
>locking?

To avoid admins belong to same admin group that use vi to edit same config
file.

>
>>Thanks for your response.
>>
>>I hope I am not consuming too much resources here with beginners' 
>>question.
>
>No worries!  Always good to try and figure out different uses.

I was able to use "hg serve" to show configuration files in my test system 
monitor server(hobbit,see R1) the changes logs. very easy to setup, I only 
need to figure out a way to insert the header and footer to have the web 
view consistent.  I am reading the hg python source code now, couldn't find 
an example for "hg serve --templates ".

R1: http://www.hswn.dk/hobbit-cgi/hobbit-confreport.sh
R2: http://www.selenic.com/mercurial/wiki/index.cgi/hgserve
>
>Take care,
>John

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