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richmondwang/mongodb-oneliner-cmds.md

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mongodb useful oneliner commands
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mongodb-oneliner-cmds.md

Get index sizes of all collections in db

db.getCollectionNames().map(name => ({totalIndexSize: db.getCollection(name).stats().totalIndexSize, name: name})).sort((a, b) => a.totalIndexSize - b.totalIndexSize).forEach(printjson)

Memory stats

db.serverStatus().tcmalloc.tcmalloc.formattedString

Login to repl member with keyfile

mongo -u __system -p "$(tr -d '\011-\015\040' < path-to-keyfile)" --authenticationDatabase local

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