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From:Johan De Meersman Date:January 14 2010 4:14pm
Subject:Re: version
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On Thu, Jan 14, 2010 at 5:02 PM, <tony.chamberlain@stripped> wrote:

> The other thing is, mysql appears to keep changing between
> /etc/init.d/mysqld and /etc/init/mysql so I also have to do an
> ls /etc/init.s/mysql* to figure out what to use to start which is also
> kind of a pain.
>

Hmm... I'm no RedHat/CentOS man, but if there's also init.1 through init.6,
it should be pretty safe to ignore those - the scripts in there should be
symlinks to the init.d ones.


>
> -----Original Message-----
> From: Johan De Meersman [mailto:vegivamp@stripped]
> Sent: Thursday, January 14, 2010 09:44 AM
> To: tony.chamberlain@stripped
> Cc: mysql@stripped
> Subject: Re: version
>
> You *should* be using a package manager (perfectly fine RPMs available for
> all your needs), but if you must do this, it's a reasonably safe bet to
> right-align and zero-pad all your number to 4 digits, at which point you're
> free to concatenate them and treat them as a single number.
>
> 14.12.5.0.19 then becomes 0014 0012 0005 0000 0019 which becomes
> 140012000500000019.
>
> You'd probably be safe with 3 or maaaaaaaybe even two positions, depending
> on how many releases get done :-)
>
> The better-but-more-work way is to compare every number separately,
> starting
> with the major release.
>
>
> On Thu, Jan 14, 2010 at 4:21 PM, <tony.chamberlain@stripped> wrote:
>
> > I have an install script that does some stuff with mysql (i.e. install,
> > start, etc).  It installs
> > mysql  Ver 14.12 Distrib 5.0.19, for pc-linux-gnu (i686) using readline
> 5.0
> >
> > This was good when we just used CentOS 4.5.  Now we are doing some later
> > CentOS versions and the mysql version may be higher.
> >
> > I want to do something like  "mysql --version" and process the result and
> > if the version is >= 5.0.19 skip the mysql installation and just do the
> > other stuff.  I can't compare as it is right now because the . and stuff
> > may screw up the comparison (e.g. ver 5.2 will show as greater than 5.19
> > eg).
> >
> > I want to know, if I break the individual pieces like 14 12 5 0 19 I can
> do
> > some sort of calculation to determine a number that I can actually
> compare.
> > Or can I just remove all the decimal points, like 14.12.5.0.19 becomes
> > 14125019?  I might have to make it like  14120050019 or something.
> >
> > What is an algorithm I can use?
> >
> >
> > Thanks
> >
> >
> >
> > --
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> >
> >
>
>
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>
>
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>


-- 
Bier met grenadyn
Is als mosterd by den wyn
Sy die't drinkt, is eene kwezel
Hy die't drinkt, is ras een ezel

Thread
versiontony.chamberlain14 Jan
  • Re: versionJohan De Meersman14 Jan
Re: versiontony.chamberlain14 Jan
  • Re: versionJohan De Meersman14 Jan