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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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POSIX getpgrp can't take an argument

(F) Your system has POSIX getpgrp(), which takes no argument, unlike the BSD version, which takes a pid.

ISBN 9781906966027Perl Language Reference ManualSee the print edition