Re: random number generator

Eric Blake-3 wrote:
> 
> On 08/18/2010 11:58 AM, Eric Blake wrote:
>>> printf: 1: usage: printf format [arg ...]
>> 
>> And dash's /bin/sh does NOT have $RANDOM, so you ended up doing the same
>> as esyscmd(`printf ').
> 
> [I hit send too soon; here's some clarifications]
> 
> dash does not own /bin/sh.  What I meant was:
> 
> esyscmd uses /bin/sh (unless you specified differently at ./configure
> time); dash does not have $RANDOM; therefore, if dash is installed as
> /bin/sh, then esyscmd invokes a shell that does not have $RANDOM, and an
> undefined unquoted variable is elided, so you ended up doing the same as
> esyscmd(`printf ').
> 
>> But if you are intending to stick with `' quoting, then use:
>> 
>> esyscmd(`/bin/bash -c "\"$RANDOM\""')
> 
> esyscmd(`/bin/bash -c "printf \"$RANDOM\""')
> 
> -- 
> Eric Blake   [email protected]    +1-801-349-2682
> Libvirt virtualization library http://libvirt.org
> 
> 
>  
> 


Thanks so much for the help, that was it.

I've never done much shell calls inside of M4, but I have with PERL
scripting, never had any problems before.

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