Shell Scripting Study Cards

Enhance Your Understanding with Shell Scripting Concept Cards for quick learning



Shell Scripting

A scripting language used to automate tasks and interact with the operating system through a command-line interface.

Variable

A named storage location used to store data in a shell script.

Data Types

The types of data that can be stored in variables, such as strings, numbers, and arrays.

Conditional Statement

A statement that allows the execution of different code blocks based on a condition.

If-Else Statement

A conditional statement that executes a block of code if a certain condition is true, and another block of code if the condition is false.

Loop

A control structure that allows the repeated execution of a block of code.

For Loop

A loop that iterates over a sequence of values and executes a block of code for each value.

While Loop

A loop that executes a block of code as long as a certain condition is true.

Function

A reusable block of code that performs a specific task.

File Handling

Operations performed on files, such as reading, writing, and appending data.

Command Line Arguments

Values passed to a shell script when it is executed, allowing the script to take input from the user.

Regular Expression

A sequence of characters that defines a search pattern, used for pattern matching and text manipulation.

Error Handling

Techniques used to handle and report errors that occur during the execution of a shell script.

Exit Status

A value returned by a command or script to indicate whether it executed successfully or encountered an error.

Advanced Shell Scripting

Advanced techniques and features of shell scripting, such as process management, signal handling, and debugging.

Command Substitution

A mechanism that allows the output of a command to be used as input for another command or assignment.

Pipeline

A sequence of commands connected by pipes, where the output of one command is passed as input to the next.

Redirection

The process of changing the input or output of a command to come from or go to a file or another command.

Environment Variables

Variables that are set in the shell's environment and can be accessed by shell scripts and commands.

Command Line Options

Options that modify the behavior of a command when it is executed, specified after the command name.

Debugging

The process of finding and fixing errors in a shell script.

Scripting Best Practices

Guidelines and recommendations for writing clean, efficient, and maintainable shell scripts.

Shell Variables

Variables that are set and maintained by the shell, providing information about the environment and configuration.

Command Line History

A feature that allows the user to recall and reuse previously executed commands.

Command Line Editing

Techniques and shortcuts for editing and manipulating command lines in the shell.