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# foo=bar # name=foo # echo ${!name} bar The above example shows how to make a bash environment variable reference the value of another. # echo ${!f*} foo fs_abc_opts fs_name The above example shows how to get a list of all variables beginning with “f” (NB the wildcard can only go at the end). Related posts: Heartbeat service scripts A service script for Heartbeat needs to support at least… Ben Fowler writes about the issues related to nuclear power in Australia. He spends 8 paragraphs discussing the issues on the “Right” side of politics – of which 6 concern the an Australian nuclear weapons capability and then spends 3 out of 5 paragraphs related to the “Left” side explaining that he thinks that everyone […] A default RHEL4 install of a Rackspace (*) server contains a cron.d file named /etc/cron.d/rs_rhncheck that runs a job to check for Red Hat Network updates. In the default configuration this would send out a message every day indicating that up2date did nothing. To only get email when there is something interesting happening I changed […] Just over two days ago I sent a DMCA take-down request to nixforce.com for copying my content in violation of the non-commercial license that I offer, I have not had a response from them and they have kept mirroring my site. I have just sent a DMCA take-down to tierzero.net which appears to be their […] The first thing you need is to have meta keywords in the pages. The solution I discovered for doing this is the All In One SEO Pack, this automatically makes the categories of a blog post become meta keywords, allows adding arbitrary meta keywords when editing the blog post, and supports keywords for the entire […] In this post I recommended that job seekers not publish their CV. In a comment Gunnar suggested having a special CV for conferences. I think that Gunnar’s idea is good and have started writing my conference CV at http://etbe.coker.com.au/conferences. When I complete it I will make it part of every submission for speaking at a […] Mark Greenaway expresses surprise that someone could spend $8000 per annum on petol. I own a 1999 VW Passat 2.8L that does 12.8L/100Km (based on my average driving habits – I record the amount of petrol purchased and the distance driven). I spend an average of just over $60 a month on petrol, so I’m […] I often want to write blog posts about HTML code and about source code in various languages. One problem I have is that the characters I want to use have special meanings (EG < and >), another is that I indent source code to make it readable and I don’t want the spaces trimmed from […] |
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