Optimizing, minify and compressing JavaScript and CSS files, the easy and fast way? With YUI Compressor 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.
…This post shows you how to test an StartTLS/TLS connection to an SMTP server to investigate SMTP over TLS connection issues. For this you use the OpenSSL tool (program). You also learn how to create base64 encoded logon information to verify SMTP authentication over this opportunistic TLS connection. All that 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 using OpenSSL on your command line.
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How to use shorthand names for hostnames with ssh? You don’t always want to type in a complete host name when using ssh to remote hosts. Here is how to configure and use shorthand hostnames with ssh.
…The other day I was searching for a particular email file in an Maildir on one of our mail servers. Knowing only the From address, I thought I’d use grep. Unfortunately it failed and gave me an error: /bin/grep: Argument list too long. Here is how to overcome this grep error…
Bash: Grep through a large number of files – “Argument list too long”Read More »
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 examples as an alternative to Microsoft’s Log Parser tool, because finding spam scripts fast is often very important.
Grep for forensic log parsing and analysis on Windows Server IISRead More »
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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