Program

You can connect two commands together so that the output of a program is the input of the next program. Two or more commands connected in this way form a pipe.

When you run a program on a Unix system, the system creates a special environment for that program. This environment contains everything needed for the system to run the program

When you work in a distribution environment then you need to communicate with remote users and you also need access to remote Unix devices.

There are many ways to edit files in Unix and for me, one of the best ways is to use the Editor to edit the micro screen orientation. This editor lets you edit the lines of

Shell is an environment in which we can run commands, programs and Shell scripts. There are different versions of Shell, which differ only from the version of the operating

A variable is a string of characters from which we assign a value. The assigned value can be a number, text, file name, device or any other type of data.

The previous tutorial has warned about using special characters in your variable name. This is because these characters are used in the names of special variables in Unix. These

A shell variable is able to hold a single value. This type of variables is called scalar variables.

There are many operators supported by each Shell. Our tutorial is based on the default Shell (Bourne) so we are discussing Bourne shell operators in this chapter.

This tutorial lists all the operators available in C Shell. Here, most operators are similar to those we have in the C Programming Language.

This tutorial lists all the operators available in the Korn Shell. Here most of these operators are similar to what we have in the C Program language.

Aggregation can be understood as aggregation. The Aggregation operation handles data records and returns calculated results. The operations group the values ​​from multiple

You have seen the use of MongoDB ObjectId in previous chapters. In this chapter, we will understand the structure of ObjectId.

Replication is the process of synchronizing data from multiple servers. Replication provides redundancy and increased data availability for multiple data copies on many different

Sharding is a process of storing data records across multiple devices and it is a method of MongoDB to meet the requirement for increasing data. When the size of the data

To create a database Backup in MongoDB, you should use the mongodump command. This command will dump all Server data into dump directory. There are many options available from

When you are preparing a MongoDB Deployment, you should understand how your application is being supported in Production.

Relationship in MongoDB represents how the Documents are related. Relationship can be modeled through the Embeded and Referenced method.

As shown in the Relationship chapter in MongoDB, to deploy a standardized database structure in MongoDB, we use the Referenced Relationship concept, also known as Manual

When all fields in the query are part of the index, MongoDB connects query conditions and returns the result by using the same index without looking inside the Document. When