How to connect mongodb from console in Ubuntu

Access mongo from terminal:

Open Terminal with Ctrl + Alt + T then type below command:

mongo

List of all databases:

show dbs;

Select database for uses:

use db_development(db_name);

Display table list from db:

show tables;

Display data from table:

db.groups.find()

       where groups is a table name

Search content from table:

db.groups.find({name: "sachin"})

       where groups is a table name and name is field name

Set limit for display data from table:

db.groups.find().limit(2);

Read More

Moped::Errors::ConnectionFailure (Could not connect to any secondary or primary nodes for replica set)

Solution:

For this error we need to remove mongod.lock first and for that use below command for remove that  and also restart server

sudo rm /var/lib/mongodb/mongod.lock

sudo service mongodb start

If you want to restart service then do it:

sudo service mongodb restart

Read More

How to use multiple skype on ubuntu 12.04

For Open multiple skype press Alt + F2 and type this command:

skype --secondary 

If this is not working then Open Terminal with Ctrl + Alt + T and run this command inside it:

skype --secondary &

Read More

Move Window Control Buttons to the Right

Step 1.) Open terminal with Ctrl + Alt + T then run this command:

sudo apt-get install gconf-editor

Step 2.) Press Alt + F2 then run this command :

gconf-editor

then press Enter

Step 3.) follow this flow and browse:

apps > metacity> general

Step 4.) Then look in right panel for "button_layout" and change value from close,minimize,maximize: to :minimize,maximize,close
then press Enter

Read More