Monthly Archives: May 2016

Identifying critical unpatched vulnerabilities on a Red Hat system

These are some working notes for identifying critical unpatched vulnerabilities on a Red Hat Enterprise Linux system (version 6). If you install yum-security plugin, you can list security updates available and which CVEs they relate to, as well as their … Continue reading

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Mario Obejas on “a replacement for bash?” and on writing production-grade code in any language.

Recently Yves Dorfsman asked on the lopsa-tech mailing list: A lot of people love to hate bash, and there are good reasons for it, but it seems that there isn’t an obvious replacement for it. […] What do you use? … Continue reading

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Ansible now available as an RPM

Ansible is now available as an RPM from the EPEL repo. It pulls in all the dependencies needed by Ansible (Python libraries, libyaml and sshpass). The RPM provides Ansible version 2.0.2.0 which includes a number of bug fixes including a … Continue reading

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Key references for various tools

The following post was contributed by Mike Weilgart who has recently joined the ranks of Linux system administrators. For bash and POSIX shell scripting: Variable quoting Security implications of forgetting to quote a variable in bash/POSIX shells Why does my … Continue reading

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Training program to make a Novice System Administrator

I’ve put together a program to make entry-level Linux system administrators because we need more to maintain the IT fabric of modern civilization.   The program is self-paced, using online resources.  This is not training I deliver personally, rather I will guide … Continue reading

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