>> page says 'converting from troff to postscript' but then never
>> actually displays anything. I'm sure there's something basic
>> I'm forgetting here--can somebody help me figure out what's
>> wrong?
>
> the file descriptor is never closed, thus page never stops to render
> what it's got.
>
> what you want is the same thing with the cmd rolled inside. something
> like
>
> #!/bin/rc
>
> if(! ~ $#* 2){
> echo usage: w file cmd >[1=2];
> exit usage
> }
>
> s=''
> while(){
> n=`{sum $1| sed 's/ .*//g'}
> if(! ~ $s $n){
> s=$n
> $2 < $1
> }
> sleep 1
> }
This doesn't quite allow for the same possibilities as the original
Unix program seemed to, where you could do:
watch fig1.pic | pic | troff | page
instead of being limited to just one command. Can the problem of
open file descriptors be solved in rc while still giving a nice general
tool, or is it necessary to go to C?
John
