In Linux, a built-in command is a command that is implemented in the shell itself. This means that the command does not need to be executed by a separate program. Built-in commands are typically faster than external commands, and they are often more secure.
Some examples of built-in commands in Linux include:
cd: Change directorypwd: Print working directoryls: List filesecho: Print textexit: Quit the shell
To see a list of all built-in commands in Linux, you can run the following command:
help
This command will print a list of all built-in commands, along with a brief description of each command.
Built-in commands are a powerful tool that can be used to interact with the Linux system. They are often faster and more secure than external commands, and they are a good choice for basic tasks.
Here are some additional things to note about built-in commands:
- Built-in commands are not available in all shells.
- Built-in commands are typically case-insensitive.
- Built-in commands can be used to control the shell itself.
- Built-in commands can be used to access the Linux kernel.
I hope this helps! Let me know if you have any other questions.