Perl parameter passing between scripts


 
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# 1  
Old 02-20-2009
Question Perl parameter passing between scripts

Hi All,

I have two perl scripts say A.pl and B.pl.
A.pl interacts with Database and pulllls around 20 column-variables, which needs to be used in B.pl .

A.pl calls B.pl, I figured out that there exist a limit on number of arguments being passed as command line argument.

A.pl writing to a flat file and B.pl reading from it looks inefficient.

Could you help me with a method which is efficient in passing a large number of arguments.

Thanks in advance
CoolBhai
coolbhai
# 2  
Old 02-21-2009
Hi.

Arrange for the first to write to STDOUT, the second to read from STDIN, then place them in a pipeline:
Code:
./A.pl | ./B.pl

Most implementations of pipelines will use a buffer, see Pipeline (Unix) - Wikipedia, the free encyclopedia for some details.

This is a basic technique in unix-like systems. Personally, I would not be concerned with efficiency unless you find that this specific step absolutely, positively must be optimized ... cheers, drl
# 3  
Old 02-21-2009
Just "require" B.pl in A.pl, no? Then they essentially become one script, no need to pass arguments or paramaters.
# 4  
Old 02-23-2009
Thanks for the reply..! getOpts can be used which seems to be more promising..!
coolbhai
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