! Aware to Perl: How do I process each word on each line?

How do I process each word on each line?

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Use the split function:

    while (<>) {
        foreach $word ( split ) { 
            # do something with $word here
        } 
    }

Note that this isn't really a word in the English sense; it's just chunks of consecutive non-whitespace characters.

To work with only alphanumeric sequences, you might consider

    while (<>) {
        foreach $word (m/(\w+)/g) {
            # do something with $word here
        }
    }

Source: Perl FAQ: Regexps
Copyright: Copyright (c) 1997 Tom Christiansen and Nathan Torkington.

(Corrections, notes, and links courtesy of RocketAware.com)

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