bash - 多个数据库和集合 mongodump

Question

我有这样的东西:

dbs=$(mongo --quiet --eval "db.getMongo().getDBNames()" --host exemple.com | \ 
            grep '"' | tr -d '"' | tr -d ',')

for db in $dbs; do
    cols=$(mongo --quiet --eval "print(db.getCollectionNames())" $db \
                  --host exemple.com | tr ',' ' ')
    for col in $cols; do
        mongodump --host example.com -q "{_id:{\$gt:$oid}}" \
                   -d $dbs -c $col --out /data/
   done
done

我得到:

positional arguments not allowed

如何对所有数据库中的所有集合使用 mongodump？

Answer 1

这是一个工作脚本:

  dbs=`mongo --eval "db.getMongo().getDBNames()" | grep '"' | tr -d '",' `


    for db in $dbs; do
        col=`mongo  $db --host example.com --quiet --eval "db.getCollectionNames()" | tr -d ',"[]' `
        for collection in $col; do
          mongodump --host example.com -q '{_id: {$gt: 10}}' -d $db -c $collection --out dump

       done
    done

来自 mongodump documentation :

--query , -q

Provides a JSON document as a query that optionally limits the documents included in the output of mongodump. You must enclose the query in single quotes (e.g. ') to ensure that it does not interact with your shell environment.