运行--eval mongodb命令时出错

Question

I tried to run javascript (js) file to get shard's config server information, it runs fine in mongo shell but as result is too large to analyse on command prompt, i tried to save the output in a file using below mentioned 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

As i am trying to load as well run js function concurrently, it is not running, Could anyone provide a approach to run the function of js and save the output to file.

Answer 1

You don't want --shell with the redirection > as this will redirect the shell to stdout and the program will appear to hang.

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

Plus, it looks like something is wrong with your javascript files since it's complaining that wts isn't defined. Did you paste in exactly what you see when you run that command? If I use a command like yours

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

I get no output at all because of the stdout redirect. If I take out the > , I get

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

What version of the shell are you running?