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PODebugging Ruby Script For Changing Timezone Configuration File On Ubuntu
 

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  1. PODebugging Ruby Script For Changing Timezone Configuration File On Ubuntu
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    <pre><code>require 'java' if ARGV.length == 0 puts "Usage: jruby change_timezone.rb America/Toronto" exit end old_zone = File.read("../../../etc/timezone") puts old_zone time1 = Time.now puts "Current Time:"+time1.localtime.to_s new_zone = ARGV[0] open('../../../etc/timezone','w') do |f| f.puts new_zone.to_s f.close end new_zone = File.read("../../../etc/timezone") puts new_zone time2 = Time.now puts "Updated Time:"+time2.localtime.to_s </code></pre> <p>Above is a ruby script I wrote to change the timezone configuration on ubuntu. It does change the configuration file properly, however, the output for the script is Not as expected.</p> <p>Assume the default value for timezone is America/Toronto. Now run the command, jruby change_timezone.rb Asia/Chongqing, then here's the output:</p> <pre><code>America/Toronto Current Time:Thu Jul 07 14:43:23 -0400 2011 Asia/Chongqing Updated Time:Thu Jul 07 14:43:23 -0400 2011 (My Note: +0800 expected!!!) </code></pre> <p>Continue with the command, jruby change_timezone.rb Europe/Amsterdam, end up with the following:</p> <pre><code>Asia/Chongqing Current Time:Fri Jul 08 03:18:25 +0800 2011 (My Note: it actually got updated from last run!!!) Europe/Amsterdam Updated Time:Fri Jul 08 03:18:25 +0800 2011 (My Note: +0200 expected!!!) </code></pre> <p>Go further with, jruby change_timezone.rb Europe/Amsterdam (My Note: in effect repeating the last command), and get the following:</p> <pre><code>Europe/Amsterdam Current Time:Thu Jul 07 21:21:27 +0200 2011 Europe/Amsterdam Updated Time:Thu Jul 07 21:21:27 +0200 2011 </code></pre> <p>Can someone figure out why it didn't work as expected?</p>
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    1. USTerry Li
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    1. COSo if you restart the script, you get the correct time zone?
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      1. USDogbert
    2. COYes. That's what confuses me :-(
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      1. USTerry Li
 

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