There was an issue when attempting to execute the mongodb --eval command

Attempting to execute a JavaScript (JS) file in order to obtain configuration server information for a shard. While it runs successfully in the mongo shell, the resulting output is too extensive to analyze through the command prompt. To address this issue, I attempted to save the output to a file using the following command:

F:\git\bits-n-pieces\scripts> mongo --shell wts.js aggutil.js \
--eval "printjson(wts('config192'))" > out.log 
  MongoDB shell version: 2.6.4 connecting to: test 
  type "help" for help 
  2015-02-16T15:48:34.088+0530 
  ReferenceError: wts is not defined

Unfortunately, the attempt to simultaneously load and execute the JS function proved unsuccessful. Is there an alternative method available to execute the JS function and save the output to a file?

javascriptmongodb

Answer №1

Avoid using --shell in combination with the redirection operator > as it will cause the shell to redirect to stdout and may cause the program to hang.

mongo test.js test1.js --eval "var t = 900" > out.txt

Additionally, there seems to be an issue with your JavaScript files as it is indicating that wts is not defined. Make sure you are copying and pasting the command exactly as shown when executing it. When I run a similar command like this:

mongo --shell test.js test1.js --eval "var t = 900" > out.txt

I do not see any output due to the redirection of stdout. However, if I remove the >, I receive the following output:

MongoDB shell version: 2.6.6
connecting to: test
type "help" for help
loading file: test.js
loading file: test1.js
>

Can you confirm the version of MongoDB shell that you are currently using?

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