Get Minimal Perl For Unix And Linux People PDF

By Tim Maher

ISBN-10: 1932394508

ISBN-13: 9781932394504

A advisor to a gently designed subset of the Perl language, this ebook makes Perl extra obtainable to these having UNIX/Linux ability degrees starting from simple to specialist by way of capitalizing on their latest wisdom of significant utilities (grep, awk), or crucial options (filters, command substitution, looping). Dozens of designated programming examples are proven, drawn from modern software components similar to approach management, networking, internet improvement, databases, finance, HTML, CGI, and textual content research. damaged into elements, the 1st is for all who're accustomed to middle UNIX/Linux instructions equivalent to grep and caters to readers starting from managers and administrative employees to complex programmers. the second one half is for builders skilled in Bourne, Korn, Bash, or POSIX Shell programming and makes Perl scripting effortless to profit by means of exhibiting Shell examples besides their Perl opposite numbers. Many Perl modules are coated together with freely on hand pre-written code from the CPAN.

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Therefore, as the term is used in the Perl community, Laziness has more to do with using your energy efficiently than indulging in slothfulness or lethargy. But Perl provides so much scope for the expression of Laziness that it’s easy to go overboard. If taken to an extreme, Perl’s shortcuts can easily push your programs past simplification into obfuscation. And writing programs that nobody else can understand—or even worse, that you can’t understand next year yourself—is not a recommended practice.

Relational operators of AWK and Perl . . . . . . . . . . . . . . . . . . . Arithmetic operators of AWK and Perl . . . . . . . . . . . . . . . . . . Popular built-in functions of AWK and Perl . . . . . . . . . . . . . . . . Perl counterparts to popular AWK functions . . . . . . . . . . . . . . . . 1 Syntax for file attribute tests . . . . . . . . . . . . . . . . . . . . . . . 2 Comparison of supported file attributes in versions of the find command and Perl .

Useful Perl functions for lists, and their nearest relatives in Unix . . . . . . . . . Data flow in Unix pipelines vs. Perl functions . . . . . . . . . . . . . . . . The sort function . . . . . . . . . . . . . . . . . . . . . . . . . . The grep function . . . . . . . . . . . . . . . . . . . . . . . . . . The join function . . . . . . . . . . . . . . . . . . . . . . . . . . The map function .

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Minimal Perl For Unix And Linux People by Tim Maher

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