That's a useless use of... xargs. 

find -name '*.p[lm]' -exec cat {} \; | wc -l

[download]
:-) 

-sauoq
"My two cents aren't worth a dime.";

In reply to Re^2: Count file lines in a directory tree by sauoq
in thread Count file lines in a directory tree by GrandFather

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