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.chamberl...@lemko.com> 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 > > > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql?unsub=vegiv...@tuxera.be > > -- Bier met grenadyn Is als mosterd by den wyn Sy die't drinkt, is eene kwezel Hy die't drinkt, is ras een ezel
