How do pipes work?

Pipes in Linux are a powerful feature that allows you to connect the output of one command directly to the input of another command. This enables you to create complex command sequences and process data efficiently without the need for intermediate files. Here’s how pipes work:

Basic Syntax: The pipe operator is represented by the vertical bar (|). The general syntax is:
```
command1 | command2
```
In this example, command1 produces output that is passed as input to command2.
Chaining Commands: You can chain multiple commands together using pipes:
```
command1 | command2 | command3
```
Each command processes the output of the previous command.
Example Usage:
- Filtering Output: You can use grep to filter results:
```
ls -l | grep "txt"
```
  This command lists files in long format and then filters the output to show only lines containing "txt".
- Sorting Data: You can sort the output of a command:
```
cat file.txt | sort
```
  This command displays the contents of file.txt and sorts the lines alphabetically.
Efficiency: Using pipes allows you to avoid creating temporary files, making your command sequences more efficient and cleaner.

Overall, pipes are a fundamental concept in Unix-like operating systems that enhance the flexibility and power of command-line operations.