Perl para sysadmins

Perl para Administradores de Sistemas Slackshow 2010 Samir Cury – Rio Perl Monks

Caracteristicas principais do Perl ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

As faces do Perl - desmistificando ,[object Object],[object Object],[object Object],#### Linux Merry Christmas by SmokeMachine### perl -e'*MERRY=**XMAS=*/;' -F: -nae'$,=join q,,,map{chr$_+@{[(1)x unpack q CC,q q q]}}q 1007769828289001 =~/.{2}/g;BEGIN{*SANTA = *ARGV}$MERRY=$XMAS;print$F[0],join q,,,map{chr}q;099104114105115116109097115;=~/(.{3})/g;BEGIN{push@SANTA,join q,,,map{chr}q 30471011160990471120971151151191003 =~/(.{3})/g}' http://tinyurl.com/26owg37

As faces do Perl - desmistificando ,[object Object],[object Object],[object Object],#!/usr/bin/perl use Employee; my $object = new Employee( "Mohammad", "Saleem",23234345); # Get first name which is set using constructor. my $firstName = $object->getFirstName(); print "Before Setting First Name is : $firstName"; # Now Set first name using helper function. $object->setFirstName( "Mohd." ); # Now get first name set by helper function. $firstName = $object->getFirstName(); print "After Setting First Name is : $firstName";

Mais faces – diversão / “prototipagem” / ,[object Object],[object Object],Darkstar ~ # cat teste.txt I am writing here just to test a script Darkstar ~ # perl -nlpe's/writing/laughing/ or s/script/oneliner/g' teste.txt I am laughing here just to test a one-liner

Diversos Frameworks / Utilidades ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exemplo - DBIx::Class ################ Arquivo da classe Schema::Result::Artist ############ package MyDB::Schema::Result::Artist; use base qw/DBIx::Class::Core/; __PACKAGE__->table('artist'); __PACKAGE__->add_columns(qw/ artistid name /); __PACKAGE__->set_primary_key('artistid'); 1; ############### Arquivo do seu código: ################## Use MyDB::Schema::Result::Artist; my $schema = MyDB::Schema->connect($dbi_dsn, $user, $pass, dbi_params); $schema->table('artist'); #SELECT * FROM Artist my @all_artists = $schema->resultset('Artist')->all; #SELECT * FROM Artist WHERE name LIKE 'John%' my $johns_rs = $schema->resultset('Artist')->search( # Build your WHERE using an SQL::Abstract structure: { name => { like => 'John%' } } ); Para quem quiser mais : http://www.slideshare.net/jshirley/demystifying-dbixclass

A linguagem ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Perldoc Perldata http://perldoc.perl.org/perldata.html

Acessando as variaveis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Problema ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Estruturas de loop .. interessantes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Inovações do Perl 5.10 ,[object Object],[object Object],[object Object],Para os curiosos / interessados : http://www.slideshare.net/rjbs/perl-510-for-people-who-arent-totally-insane

Say ,[object Object],[object Object],samir@Darkstar ~ $ perl -E'say "HelloWorld"' HelloWorld samir@Darkstar ~ $

SmartMatching - Arrays ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SmartMatching - Hashes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Variáveis especiais – não mordem ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Variáveis especiais – ainda com medo? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CPAN – O poder do Perl ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Update pre-palestra! Net::Twitter::Lite ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

NameSpaces ,[object Object],[object Object],[object Object],[object Object],[object Object]

Instalando um modulo Perl ,[object Object],[object Object],Files=27, Tests=174, 4 wallclock secs ( 0.16 usr 0.06 sys + 3.07 cusr 0.49 csys = 3.78 CPU) Result: PASS GARU/App-Rad-1.04.tar.gz /usr/bin/make test -- OK Running make install Prepending /root/.cpan/build/App-Rad-1.04-smkdfB/blib/arch /root/.cpan/build/App-Rad-1.04-smkdfB/blib/lib to PERL5LIB for 'install' Installing /usr/local/share/perl/5.10.0/App/Rad.pm Installing /usr/local/share/perl/5.10.0/App/Rad/Help.pm Installing /usr/local/share/perl/5.10.0/App/Rad/Config.pm Installing /usr/local/share/perl/5.10.0/App/Rad/Plugin.pod Installing /usr/local/share/perl/5.10.0/App/Rad/Include.pm Installing /usr/local/share/perl/5.10.0/App/Rad/Exclude.pm Installing /usr/local/man/man3/App::Rad::Include.3pm Installing /usr/local/man/man3/App::Rad::Plugin.3pm Installing /usr/local/man/man3/App::Rad::Exclude.3pm Installing /usr/local/man/man3/App::Rad.3pm Installing /usr/local/man/man3/App::Rad::Help.3pm Appending installation info to /usr/lib/perl/5.10/perllocal.pod GARU/App-Rad-1.04.tar.gz /usr/bin/make install -- OK

local::lib – Instale tudo no seu Home! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],samir@Darkstar ~ $ perl -Mlocal::lib Attempting to create directory /home/samir/perl5 Attempting to create file /home/samir/perl5/.modulebuildrc export MODULEBUILDRC="/home/samir/perl5/.modulebuildrc" export PERL_MM_OPT="INSTALL_BASE=/home/samir/perl5" export PERL5LIB="/home/samir/perl5/lib/perl5/i486-linux-gnu-thread-multi:/home/samir/perl5/lib/perl5" export PATH="/home/samir/perl5/bin:$PATH"

Perldoc – sua fonte de referencias ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Um pouco mais de one-liners ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Arquivo cobaia samir@Darkstar ~ $ cat perl.txt PING google.com (64.233.163.104) 56(84) bytes of data. 64 bytes from bs-in-f104.1e100.net (64.233.163.104): icmp_seq=4 ttl=54 time=12.5 ms --- google.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 11.826/12.543/13.847/0.795 ms

Flags interessantes ,[object Object],[object Object],while (<>) { ... #seu codigo aqui } samir@Darkstar ~ $ perl -ne'print $_ if m/^--*/ ' perl.txt --- google.com ping statistics --- samir@Darkstar ~ $ perl -npe's/^--.*/SUBSTITUI AQUI COM O PERL/' perl.txt PING google.com (64.233.163.104) 56(84) bytes of data. 64 bytes from bs-in-f104.1e100.net (64.233.163.104): icmp_seq=4 ttl=54 time=12.5 ms SUBSTITUI AQUI COM O PERL 4 packets transmitted, 4 received, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 11.826/12.543/13.847/0.795 ms

Flags interessantes ,[object Object],[object Object],[object Object],[object Object]

Casos de uso de one-liners ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Yet Another Perl Conference YAPC::BR ,[object Object],[object Object],[object Object]

Perl -E'say q[Obrigado!]' ,[object Object],[object Object],[object Object]

Perl para sysadmins

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