Perl: Documentation Lookup, Using Builtin Help System

By Xah Lee. Date: . Last updated: .

In terminal, type perldoc perl to get a list of topics.

perldoc perlop
Lookup keywords (e.g. if, while, for, etc)
perldoc perlsyn
Lookup operators (e.g. ==,++, =~, etc)
perldoc perlvar
Lookup builtin variables (e.g. @INC, %INC, @ARG, etc)
perldoc -f function_name
Lookup function. e.g. printf.
perldoc module_name
Lookup module e.g. Data::Dumper

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