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• /x modifier for verbose regexes - video

• Scalar variables

• String operators - video

• String operators: concatenation (.), repetition (x)

• Open and read from text files

• Regex matching digits

• Email validation using Regular Expression in Perl

• $SYSTEM_FD_MAX

• Test for expected warnings

• Exchange values and keys of a hash - how to reverse a hash

• Unix and DOS commands - video

• Check several regexes on many strings

• exec

• Array indexes (screencast) - video

• Array indexes - video

• Case insensitive regexes - video

• Comparing complex data-structures using is_deeply

• Conext sensitivity - video

• Create Linux user account - video

• Creating a Perl binding to a C library using FFI with Sawyer X