Larry Wall Quotes on Compatibility
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It's there as a sop to former Ada programmers. :-)
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There are many times when you want it to ignore the rest of the string just like atof() does. Oddly enough, Perl calls atof(). How convenient. :-)
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How do Crays and Alphas handle the POSIX problem?
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I would estimate that the number of programs it breaks in the world will be less than 10. As long as one of those 10 isn't CGI.pm, we're probably okay.
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echo 'Hmmm...you don't have Berkeley networking in libc.a...' echo 'but the Wollongong group seems to have hacked it in.
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echo 'Your stdio isn't very std.'
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It is easier to port a shell than a shell script.