Perl Awk - sgml/signature GitHub Wiki

Philosophy

Perl is great for long-term projects because it almost never breaks old code. Programs written many years ago still work today without needing changes. This makes Perl a smart choice when you want your tools to last and be easy to fix later. Other languages often change rules or remove features, but Perl tries hard to keep things the same. That way, future developers can understand and use your code without starting from scratch.

Jobs

SDKs

Feature Category SolarWinds Orion SDK VMware vSphere Perl SDK (Hypothetical) Authorize.Net MongoDB Elastic MaxMind cPanel Fastly SWIG Nagios SpamAssassin MRTG OTRS/Znuny Request Tracker (RT) OpenNebula SQLite (DBD::SQLite) PostgreSQL (DBD::Pg) MySQL (DBD::mysql)
Vendor Perl Support First‑class Legacy if active First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class First‑class
API Architecture REST/JSON SOAP + partial REST REST/XML BSON/JSON REST/JSON REST/JSON Perl-native REST/JSON Code generator Plugin API Plugin API Perl-native Perl-native Perl-native XML‑RPC + Perl API Embedded SQL SQL over TCP SQL over TCP
Perl Binding Quality Clean, official Dated Clean, official Modern Modern Clean Native Official Excellent Native Native Native Native Native Official Excellent Excellent Excellent
Coverage of Platform Full Partial Full Full Full Full Full Full Full Full Full Full Full Full Full Full SQL Full SQL Full SQL
Authentication Model Token Session/cert API keys DB auth API keys API keys Local auth API keys N/A Local auth N/A N/A Local auth Local auth API keys None (local file) DB auth DB auth
Ease of Installation Lightweight Heavy Lightweight CPAN CPAN CPAN Built‑in CPAN CPAN Built‑in Built‑in Built‑in Built‑in Built‑in CPAN CPAN CPAN CPAN
Use Case Focus Monitoring VM automation Payments Databases Search/logging Geolocation Hosting automation CDN automation SDK creation Monitoring Anti‑spam Network graphing Ticketing Ticketing Cloud orchestration Embedded DB Relational DB Relational DB
Modernization Pace Active Would lag Steady Very active Very active Active Active Active Active Active Active Stable Active Active Active Active Active Active
Scriptability Very high Moderate Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high Very high
Error Handling JSON SOAP faults XML/JSON BSON/JSON JSON JSON Perl exceptions JSON N/A Perl exceptions Perl exceptions Perl exceptions Perl exceptions Perl exceptions JSON/XML Perl exceptions Perl exceptions Perl exceptions
Performance Fast SOAP overhead Fast Very fast Fast Fast Fast Fast Fast Fast Fast Fast Fast Fast Fast Very fast Very fast Very fast
Community Ecosystem Strong Small Moderate Strong Strong Strong Very strong Moderate Strong Very strong Very strong Strong Strong Strong Strong Very strong Very strong Very strong
Documentation Quality Strong Sparse Strong Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent
Integration with Other Tools Monitoring stacks Virtualization Commerce Data pipelines Logging/search Security/fraud Hosting stacks CDN pipelines Any language Monitoring Email/security Network mgmt ITSM ITSM Cloud mgmt Any SQL tool Any SQL tool Any SQL tool
Long-Term Viability Strong Weak Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong Strong
Best Fit Scenarios Monitoring automation VM provisioning Payment processing DB automation Search/logging Fraud detection Hosting automation CDN automation SDK creation Monitoring Anti‑spam Network graphing Ticketing Ticketing Cloud orchestration Embedded apps Enterprise DB Web apps

SDK Rationale

Why competitors in the payment industry were more likely to ship a Perl SDK

PayPal API architecture made Perl optional

Early PayPal APIs used simple formats such as NVP, SOAP, and later REST. These formats were easy to call from Perl by using LWP::UserAgent and a hash. The API design required no schema enforcement, no canonicalization, and no complex signing. Because of this simplicity, Perl developers could integrate with PayPal without any vendor-provided SDK.

Competitors used more complex APIs that required SDKs

Many competing payment platforms used XML schemas, SOAP envelopes, cryptographic signatures, certificate-based authentication, and typed request objects. These designs were not trivial to implement manually in Perl. Vendors with more complex interfaces needed SDKs to reduce integration friction. Authorize.Net provides a clear example, because early versions of that platform required XML signing and strict schema validation, which made a Perl SDK strategically valuable.

PayPal already had a large developer base

PayPal gained rapid adoption through integration with eBay and through strong brand recognition. Developers adopted PayPal regardless of language support. Competing platforms needed to attract developers, and one effective method in the early 2000s involved shipping SDKs in multiple languages, including Perl.

Competitors targeted small merchants who used Perl-heavy stacks

Small merchants in the early 2000s often used shared hosting environments built around cPanel. These environments relied heavily on Perl. Shopping carts, automation scripts, and merchant tools frequently used Perl. PayPal already had strong adoption among these merchants. Competing platforms needed to appeal to this group, and Perl SDKs provided a direct method for doing so.

Acquisition of Payflow Pro removed an internal path to a Perl SDK

Before acquisition by PayPal, Payflow Pro served enterprise clients and used more complex APIs. After the acquisition, PayPal unified its API strategy and deprioritized SDKs associated with Payflow Pro. Perl support never emerged from this product line. Competing platforms without PayPal scale continued to support languages used by enterprise clients, including Perl.

Competitors used SDKs as a marketing differentiator

In the early API economy, SDKs functioned as a competitive tool. Vendors used SDKs to reduce onboarding time and to signal strong support for developers. PayPal did not require this strategy. Competing platforms did. As a result, these platforms shipped SDKs in Java, PHP, .NET, Perl, and other languages.

Competitors served enterprise clients who used Perl internally

Enterprise IT departments in the 2000s used Perl for automation, ETL, reporting, and internal payment workflows. PayPal focused primarily on small merchants and eBay sellers during this period. Competing platforms such as Authorize.Net and CyberSource served more enterprise clients, and those clients expected Perl support.

Summary

PayPal API design allowed Perl developers to integrate without an SDK, and PayPal market dominance removed any need for additional language support. Competing platforms used more complex APIs, served fewer customers, and needed to attract developers, especially developers working in Perl-heavy environments. These conditions made it highly likely that at least one competing platform would ship an official Perl SDK, which is exactly what occurred with Authorize.Net.

Sponsors

Company Country / HQ Contribution Certifications
Booking.com Netherlands Major sponsor of Perl Toolchain Summit; contributor to CPAN and Perl 5 tooling n/a
Deriv Malaysia Longtime Perl user; supports MetaCPAN and ecosystem infrastructure n/a
Proxmox Austria Donated €10K to Perl 5 Core Maintenance Fund; uses Perl in server tooling Proxmox VE Certification
Zoho India Uses Perl in backend systems; supports open-source tooling n/a
Fastmail Australia Maintains Perl-based email infrastructure; active in community discussions n/a
Grant Street Group United States Core Perl contributor; supports government software using Perl 5 n/a
cPanel United States Maintains Perl-heavy web hosting control panel; active in Perl 5 modernization cPanel Certification Program
ActiveState United States (HQ in Canada) Maintains Perl distributions and tooling; supports open-source packaging n/a
Best Practical United States Creator of RT (Request Tracker); long-time Perl 5 advocate and contributor n/a
DuckDuckGo United States Uses Perl in backend search infrastructure; supports CPAN and Perl tooling n/a

Community

Conferences

Blogs

Juan Julian Merelo - Argentina

Carlos Paredes - Peru

Luis Motta Campos - Brazil

Daniel Ruoso - Brazil

Fernando Oliveira - Brazil

Github Topics

Rank Topic URL Ranking Algorithm
1 ExifTool https://github.com/topics/exiftool R=S*C
2 Mojolicious https://github.com/topics/mojolicious R=S+A
3 Command-line-text-processing https://github.com/topics/command-line-text-processing R=T*C
4 DevOps-Bash-tools https://github.com/topics/devops-bash-tools R=L-H
5 Imapsync https://github.com/topics/imapsync R=S*Q
6 Kaitai Struct https://github.com/topics/kaitai-struct R=U/P
7 WeeChat https://github.com/topics/weechat R=T+F
8 LCOV https://github.com/topics/lcov R=S+D
9 SmokePing https://github.com/topics/smokeping R=C-V
10 OpenFortiVPN https://github.com/topics/openfortivpn R=P*U

Table Footer:
Ranking Algorithms Explanation:

  • <math><mi>R</mi>: Rank
  • <mi>S</mi>: Star count
  • <mi>C</mi>: Community engagement
  • <mi>A</mi>: Activity level
  • <mi>T</mi>: Topic relevance
  • <mi>L</mi>: Language compatibility
  • <mi>H</mi>: Historical trend
  • <mi>Q</mi>: Quality rating
  • <mi>U</mi>: User interest
  • <mi>P</mi>: Popularity
  • <mi>D</mi>: Documentation quality
  • <mi>V</mi>: Viewer statistics
  • <mi>F</mi>: Fork count

mkdir for each line of a README

 mkdir $(awk '{print $1}' Hub/README.md)

Exponential Backoff

use strict;
use warnings;
use Time::HiRes qw(sleep);

sub exponential_backoff {
    my ($max_retries, $initial_delay, $max_delay) = @_;
    my $attempt = 0;

    while ($attempt < $max_retries) {
        eval {
            # Place your code that might fail here
            # For example, a network request
            die "Simulated failure" if rand() < 0.7; # Simulate a failure 70% of the time
            print "Operation succeeded\n";
            return; # Exit if the operation is successful
        };

        if ($@) {
            $attempt++;
            my $delay = $initial_delay * (2 ** ($attempt - 1));
            $delay = $max_delay if $delay > $max_delay;
            print "Attempt $attempt failed. Retrying in $delay seconds...\n";
            sleep($delay);
        }
    }

    die "Operation failed after $max_retries attempts\n";
}

# Example usage
my $max_retries = 5;
my $initial_delay = 1; # in seconds
my $max_delay = 16; # in seconds

exponential_backoff($max_retries, $initial_delay, $max_delay);

w

Debian Package Listing

use strict;
use warnings;
use Dpkg::Database;

my $threshold_kb = 102400;  # 100MB in KB

my $db = Dpkg::Database->new();
$db->load();

foreach my $pkg ($db->get_packages()) {
    my $size = $pkg->{InstalledSize} || 0;
    if ($size > $threshold_kb) {
        printf "%.1f MB\t%s\n", $size / 1024, $pkg->{Package};
    }
}

Module Installation

cpan install Dpkg::Database

Glob/Map/Grep

Bulk Edits

Manual Module Installation from CPAN

Find/Replace

perl -pi -e 's/you/me/g' file

Error Messaging

http://blogs.perl.org/users/zoffix_znet/2016/08/the-awesome-errors-of-perl-6.html

Sort

https://en.wikipedia.org/wiki/Schwartzian_transform

Command Line

XML

https://culturedperl.com/perl-5-xml-validation-with-dtd-and-xsd-ec2d90f7c434 https://docs.servicenow.com/bundle/london-application-development/page/integrate/perl/task/t_InstallThePerlAPI.html

Plain Text

CPAN

Interop

CGI/PSGI

Modernization

References

Perl6

https://medium.com/unraveling-the-ouroboros/haskell-vs-perl-6-first-impressions-91b0d77a8140

Games

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