PCA - patch check advanced

今天第一次接触pca，转篇文章扫盲下~

PCA是sun solaris系统用来管理patch的一种工具。

它由perl写成，所以不用编译，可以直接运行。

 

http://www.par.univie.ac.at/solaris/pca/

Intro

Patch Check Advanced (pca) generates lists of installed and missing patches for Sun Solaris systems and optionally downloads patches. It resolves dependencies between patches and installs them in correct order. It can be the only tool you ever need for patch management, be it on a single machine or a complete network. Just one perl script, it doesn't need compilation nor installation, and it doesn't need root permissions to run. It works on all versions of Solaris, both SPARC and x86.

Sun has offered various tools in the past for patch analysis and management, e.g. PatchDiag, PatchCheck, PatchPro, smpatch, Sun Update Connection (see the Sun Patch Portal for details). Some of them are not actively maintained, some are huge and opaque, some don't run on older Solaris releases or stripped-down machines, some require complicated installation and registration procedures. None of them really made me happy - I didn't want to accept that patch management has to be that cumbersome.

So I started to implement my own tool, which was published first in 2003. It got (and still gets!) refined and enhanced, supported by the feedback and contributions of its users. Without exaggeration, pca now is the best patch tool for Sun Solaris. See what others say about pca.

A lot of care is taken to guarantee that pca doesn't omit patches which might apply to a system. This is the most important design principle. I'm manually checking that it's fulfilled on a daily basis.

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snoop 是solaris系统上用于显示网络通讯的工具。它能够截获IP包，并且将其显示或保存到指定的文件中。