PERLVAR(1) Perl Programmers Reference Guide PERLVAR(1)

PERLVAR(1) Perl Programmers Reference Guide PERLVAR(1) # PERLVAR(1) Perl Programmers Reference Guide PERLVAR(1) NNAAMMEE # perlvar - Perl predefined variables DDEESSCCRRIIPPTTIIOONN # TThhee SSyynnttaaxx ooff VVaarriiaabbllee NNaammeess Variable names in Perl can have several formats. Usually, they must begin with a letter or underscore, in which case they can be arbitrarily long (up to an internal limit of 251 characters) and may contain letters, digits, underscores, or the special sequence “::” or “’”. ...