MongoDB - Query string match in a "like" manner

db.collection_name( { field_name: /search_string/ } );

MongoDB - Resolve server startup issues

mongod --repair --dbpath /PATH_TO_DB


This resolved this error message:
"Assertion failure isOk() src/mongo/db/storage/mmap_v1/extent.h 81"

MacOS - Get file or folder absolute path copied to the clipboard

(1) Select a file or folder using Finder
(2) Press COMMAND + OPTION + C

MacOS - View hidden files toggle keyboard shortcut

command + shift + .

MongoDB - Upgrade standalone from v3.4 to v3.6

// Set the feature compatibility version to 3.4
db.adminCommand( { getParameter: 1, featureCompatibilityVersion: 1 } );
db.adminCommand( { setFeatureCompatibilityVersion: "3.4" } )

// Test and let your application season for a while

// Once convinced everything works, then set features compatibility version to 3.6
db.adminCommand( { setFeatureCompatibilityVersion: "3.6" } )