Background

I had a task earlier this week to reconcile block devices between two directories. Simple - one can do so by reviewing major number / minor number, and then noting the match. Thus:

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This may seem like an inconsequential, overly specific topic, but I'm posting here because - following a couple 'net searches - I observed a dearth of helpful information on MySQL server log file rotation. All the resources I found on the topic essentially said:

• Use logrotate(8) -- 95% of the hits I found; or
• Use "some_contrived_steps, not explained well" -- the other 5%

So I am sharing my own contrived steps here. There's nothing wrong with logrotate(8), in particular, but...

I recently deployed a slapd(8) instance, and immediately recognized the need for a robust directory entry management utility. After doing some reading and experimentation, I discovered that Perl - and a few accompanying modules - handle the job nicely. What I'm sharing here is a brief, rather disjointed synopsis and some code samples.

In order to understand and use the samples, you should be comfortable with Perl and the installation of modules. And you'll certainly want a good fundamental...

Nothing earth shattering here. Just a quick automation utility I put together using the venerable openssl.

The wrapper script does a couple sanity checks, and saves you from having to remember command options for enc(1). You can change _cipher to suit your tastes / baked-in support.

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The problem:

• You're a RHEL5 sysadmin.
• You want to run your regular ol' ssh daemon.
• You also want to chroot a few sftp users.
• You need the OpenSSH Match directive with support for the ChrootDirectory directive! This functionality exists as of OpenSSH version 5.1. [1]
• Alas, your RHEL5 server still runs OpenSSH version 4.3p2. [2]

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Some thoughts and a solution:

You can...