CSV with mongoexport

Syntax

mongoexport --csv --db=database --collection=collection --fields=email,firstname,lastname > /tmp/emails.csv

mongoexport --help

options:
  --help                  produce help message
  -v [ --verbose ]        be more verbose (include multiple times for more 
                          verbosity e.g. -vvvvv)
  -h [ --host ] arg       mongo host to connect to ("left,right" for pairs)
  --port arg              server port. Can also use --host hostname:port
  -d [ --db ] arg         database to use
  -c [ --collection ] arg collection to use (some commands)
  -u [ --username ] arg   username
  -p [ --password ] arg   password
  --ipv6                  enable IPv6 support (disabled by default)
  --dbpath arg            directly access mongod database files in the given 
                          path, instead of connecting to a mongod  server - 
                          needs to lock the data directory, so cannot be used 
                          if a mongod is currently accessing the same path
  --directoryperdb        if dbpath specified, each db is in a separate 
                          directory
  -f [ --fields ] arg     comma separated list of field names e.g. -f name,age
  --fieldFile arg         file with fields names - 1 per line
  -q [ --query ] arg      query filter, as a JSON string
  --csv                   export to csv instead of json
  -o [ --out ] arg        output file; if not specified, stdout is used
  --jsonArray             output to a json array rather than one object per 
                          line