perl hash and refrnce
http://www.tutorialspoint.com/perl/perl_hashes.htm http://perl101.org/hashes.html http://docstore.mik.ua/orelly/perl2/prog/ch09_02.htm http://perlmaven.com/perl-hash
perl
To convert date and time to epoch time in perl
use Date::Parse; print str2time("12/5/2014 12:27PM")."\n";
Modifying perl config by hand – just modify Config.pm
The post below will show you how to generate the Config.pm Then if you still need configuration changes (for example proxy) just modify the file by hand. To initially configure perl cpan. Make note of the config file & directory, for example below its /user/.cpan/CPAN/MyConfig.pm perl -MCPAN -e shell [..] snip Would you like to …
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perl how to change from string to a number
Below you can asee a subrutine that will cause perl to undrtsnad this as numbers foreach (@full_cpu_data) { $_ =~ s/K//; @cpu_data = split(':', $_); @cpu_data = map { $_ += 0 } @cpu_data; push @cpu_plot, { cpu => @cpu_data[3], core => @uptime[6], disk => @disk[4] }; $i++; }
Emailing an attachment in perl
How to Email Attachments in Perl Below as a small snipped that can be used to email attachments sub Mail { # Handles attachments # my($from, $to, $subject, $body, @attachments) = @_; my $cmd = ‘/util/sendEmail’; foreach $attachment (@ARGV) { $cmd .= qq# -a “$attachment”# if -r “$attachment”; } $cmd .= qq# -u “$subject”# if …
Show installed perl modules
To list all installed perl modules #!/usr/bin/perl # ## # #!/usr/bin/perl use ExtUtils::Installed; my $instmod = ExtUtils::Installed->new(); foreach my $module ($instmod->modules()) { my $version = $instmod->version($module) || “???”; print “$module — $version\n”; }