• These enhancements are useful to me but they don't make sense for everyone. Feel free to tweak to your desire and please submit pull requests.
• Does not work in Windows (currently)
• Does not work with shells or db servers < 2.2 (currently)

Link mongo_hacker.js to .mongorc.js in your home directory:

ln -sf <mongo-hacker-dir>/mongo_hacker.js ~/.mongorc.js

Note: This currently only works with the v2.2+ of shell (which you can use with earlier versions of the server safely)

Verbose shell is enabled by default -- to disable: setVerboseShell(false)

Disable notfication of "Type 'it' for more"

Custom prompt with hostname(process-version) db> formating

Colorized query output

• ObjectId: Green(underlined)
• null: Bright Red
• String: Green
• Number: Red
• Key: Yellow
• Boolean: Blue
• Date: Cyan

Highlight querytime if verboseShell is enabled

• In green if querytime is at or below slowms
• In red if query time is above slowms

IndexParanoia

• Automatically show information about index use -- to disable: setIndexParanoia(false)

Default indent is 2 spaces instead of tab

• Customizable by setting __indent

Tabular query output with .t()

• Call .t() on any cursor to get tabular output, e.g. db.mycollection.find().t()
• You can pass .t() a hash with the following keys:
  • limit: Limits the number of rows in the output (which defaults to 20)
  • maxlen: Values longer than this will be truncated to this length, to prevent stupidly long output (default 50)
  • undef: A string representing what should be shown when a value is undefined for a given document
• Observe that you can still pass useful things to .find(), for example to ditch columns from the output
  • db.survey.find(null, {questions: 0}).t({maxlen: 200}) // would hide the questions column

AutoMulti

• Automatically use multi updates -- to disable: setAutoMulti(false)

db.users.update({}, {$set: {awesome: true}})
Updated 4 existing record(s) in 1ms

Aggregation Framework Helpers -- on collections

• Group and Count: gcount(group_field, filter)
• Group and Sum: gsum(group_field, sum_field, filter)
• Group and Average: gavg(group_field, avg_field, filter)