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Bash Templating: How to build configuration files from templates with Bash?
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You can use this:
perl -p -i -e 's/\$\{([^}]+)\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that va...
Deleting rows with MySQL LEFT JOIN
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answered May 4 '10 at 6:26
Daniel VassalloDaniel Vassallo
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How can a Java program get its own process ID?
...every implementation in wide use.
On linux+windows it returns a value like 12345@hostname (12345 being the process id). Beware though that according to the docs, there are no guarantees about this value:
Returns the name representing the running Java virtual machine. The
returned name string can be...
Add a method breakpoint to all methods of a class in EclipseIDE
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136
The fastest way is to go to the "Outline" view and select all of the methods you want, right-c...
Favorite way to create an new IEnumerable sequence from a single value?
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145
Your example is not an empty sequence, it's a sequence with one element. To create an empty s...
Override ActiveRecord attribute methods
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211
Echoing Gareth's comments... your code will not work as written. It should be rewritten this wa...
How do I update each dependency in package.json to the latest version?
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How to get a list of properties with a given attribute?
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answered Feb 17 '10 at 16:09
Marc Gravell♦Marc Gravell
888k227227 gold badges23562356 silver badges27202720 bronze badges
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“simple” vs “current” push.default in git for decentralized workflow
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186
The difference is that with simple, git push (without passing a refspec) will fail if the curr...
How to convert from System.Enum to base integer?
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135
If you don't want to cast,
Convert.ToInt32()
could do the trick.
The direct cast (via (in...