Minify JavaScript, CSS and compress images

Fire-and-forget JavaScript and CSS minification and PNG image optimization on the Linux-, Mac OS X and Windows command-line interface. Using OptiPNG and YUI Compressor

Optimize PNG images and minify JavaScript and CSS files, the easy and fast way? With YUI Compressor and OptiPNG on the Windows-, Linux- and macOS command line of course! Compacting HTML, CSS, and JavaScript can speeds up your website because of smaller and faster downloads, parsing, and execution time.

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Test SMTP Authentication and StartTLS

In this post you’ll learn how to test SMTP authentication with StartTLS from the command line. Neat, right?! :) This post shows you how to test a connection to an SMTP server, create base64 encoded logon information, verify the authentication over an opportunistic TLS connection, and all from the Linux and Windows command line. This comes in very handy when investigating SMTP authentication issues, particular those over TLS encrypted connections. Investigate SMTP authentication issues like a boss.

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Grep for forensic log parsing and analysis on Windows Server IIS

How to use GnuWin32 ported tools like grep.exe and find.exe for forensic log file analysis in Windows Server. In this article I’ll give some real live examples of using these ported GnuWin tools like grep.exe for logfile analysis on Windows servers. The article provides three example, as an alternative to LogParser, because finding spam scripts fast is often very important.

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Check IP address blacklist status in Bash

Here is a Linux Bash shell script to check whether an IP address is listed in a DNSBL blacklist, or RBL. This is a modified version of a by J65nko posted Bash script to check an IP address reputation status in several blacklists. I’ve added HttpBl as backlist and an API key is required for this list. Using this script in Bash you can quickly test if an IP address is blacklisted.

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