While others have answered your specific question, I shall instead point out that you will almost never want to do this:

cat file | command

as it is a waste of a process (the cat) which gains nothing. Instead you can do this:

command < file

thus avoiding what used to be called the UUoCA. Nothing to do with perl, but a valuable concept nonetheless.

In reply to Re: One-liner to fix LaTeX quotation marks by hippo
in thread One-liner to fix LaTeX quotation marks by tim_the_monk

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