Re: [Plplot-devel] Swig version check implemented

[Rafael L. <lab...@ps...>]

* Alan W. Irwin <ir...@be...> [2003-01-31 13:00]:

> Since I didn't completely understand Rafael's suggested syntax, I tested
> this both with swig version 1.3.17 and other versions, and it does what it
> is supposed to do.

Come on, you have never written programs in sed before?  You are not a real
man... :-)

> But, Rafael, if you have any ideas on how to change that test to < "17", by
> all means do so.

Done.  The trick is to use shell arithmetic evaluation:

    var=4
    if test $(($var > 2)) = 1 ; then echo Yes, \$var is greater than 2 ; fi

This is standard Bourne shell, no bashisms here.

> (A test for < "17" does not work and gives an error message concerning an
> unknown file 17.)

This happens because the shell interprets the token ">"as file redirection.
and not one of the arguments of the test command (like it does for "=" or
"!=").

-- 
Rafael