Program

Shell does the magic when it encounters an expression that contains one or more special characters.

Shell provides a variety of characters that have special meaning while using them in any Shell script and cause a limit of a word unless quoted.

Most Unix system commands receive input from your terminal and send the output back to your terminal. A command usually reads its input from a location called standard input,

Functions allow you to streamline an overall feature of a script into a smaller and more logical part that can perform the same function whenever it is needed through the function

All Unix commands come with arbitrary and mandatory functions. It is very common when you forget the full syntax of these commands.

The while loop gives you the ability to execute a set of repetitive commands until certain conditions occur. It is often used when you need to manipulate iterative variable

The for loop works on lists of items (items). It repeats a set of commands for each item in a list.

The while loop is perfect for the situation where you want to execute a set of commands while some conditions are true. Sometimes you need to execute a set of commands until a

The select loop provides an easy way to create a numbered menu from which the user can select. It is useful when you want to ask the user to select one or more items from a list

A regular expression is a string that can be used to describe different sequences (arrangement) of characters. Regular Expression is often used by various Unix commands, including

A file system is a logical collection of files on a partition or a disk. A partition is an information store and can be combined into a hard disk if desired.

Unix supports a concept of Group Account, which groups a number of accounts logically. Each account will be part of any group account. The Unix team plays an important role in

The purpose of this tutorial is to introduce performance analysis with the tools available for monitoring and managing performance on Unix systems, and to provide a general

Unix systems have a very powerful and flexible logging system, which gives you the ability to record almost anything you can imagine and then manipulate this log to track the

Signals are software interrupt signals that are sent to a program that indicates a serious event has occurred. These events can be very diverse from user requests to illegal

This chapter lists the commands, including syntax and brief descriptions. For more details about these commands, you use.

Most parts of the tutorial are mostly built on Bourne Shell, but this page lists all the built math functions available in the Korn Shell.

These are the basic knowledge of unix and linux for novices with this type of operating system. Our basic tutorial series will introduce the most basic knowledge of UNIX / Linux

Unix operating system is a collection of programs that act as a link between a computer and a user.

All data in Unix is ​​organized in files. All files are organized in folders. These directories are organized in a tree structure that is called the file system.