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Add documentation on key removal (possible now with vm module)

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1 parent 9cec19e commit d91cf05b96d1b546160c5cfe28333e79436eb8e1 @andreyvit andreyvit committed Dec 27, 2011
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@@ -81,6 +81,8 @@ any number of fields can be specified to be printed from each json object.
by default the structure of the original json object is maintained, however options
like -e and foo=bar allow for transforming object structure.
+To remove a certain key, assign it to undefined.
## Standard Input Formats
* line delimited json objects

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