This specific example might be of little use to most, but
it may serve to illustrate the usage.

Taking one program (a character frequency analyzer) and
using it with another program (an LWP::Simple script to
grab a website and show its code), I was able to use a
pipe to count the character frequency of the output of the
html code.

perl lwpprogram.pl | perl characteranalyzer.pl

[download]
There are limitless possibilities with this technique.
Two short scripts could do the work of one big one.

In reply to Using pipes to combine scripts by esk555

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