Introduction
The Linux command id is a command line utility used to display information about the user’s identity. It is used to display the user’s user ID (UID), group ID (GID), and other group information associated with the user. It can also be used to display the user’s real and effective user and group IDs, as well as the user’s group memberships. The id command is a useful tool for system administrators to quickly view user information.
Examples
Linux Commands with Examples
The following are some of the most commonly used Linux commands with examples:
- ls – List the contents of a directory. Example:
ls -l - cd – Change the current working directory. Example:
cd /home/user/Documents - mkdir – Create a new directory. Example:
mkdir my_new_directory - rm – Remove a file or directory. Example:
rm my_file.txt - mv – Move or rename a file or directory. Example:
mv my_file.txt my_new_file.txt - cat – Display the contents of a file. Example:
cat my_file.txt - grep – Search for a string in a file. Example:
grep 'search_string' my_file.txt - chmod – Change the permissions of a file or directory. Example:
chmod 755 my_file.txt - sudo – Execute a command as the root user. Example:
sudo apt-get update
Linux Command
Linux is a powerful and versatile operating system used by many people around the world. It is open source and free to use, and it comes with a wide range of commands that can be used to perform various tasks. In this article, we will discuss some of the most commonly used Linux commands.
ls
The ls command is used to list the contents of a directory. It can be used to list files, directories, and other information about the contents of a directory. For example, the command ls -l will list the contents of a directory in long format, which includes the permissions, size, and other information about each file or directory.
cd
The cd command is used to change the current working directory. For example, the command cd /home/user will change the current working directory to the user’s home directory. This command is often used in combination with other commands to navigate the file system.
mkdir
The mkdir command is used to create a new directory. For example, the command mkdir my_directory will create a new directory called my_directory in the current working directory. This command is often used to create new directories for organizing files.
rm
The rm command is used to remove files or directories. For example, the command rm my_file.txt will remove the file my_file.txt from the current working directory. This command is often used to delete files that are no longer needed.
chmod
The chmod command is used to change the permissions of a file or directory. For example, the command chmod 755 my_file.txt will change the permissions of the file my_file.txt to allow the owner to read, write, and execute the file, and allow others to read and execute the file.
sudo
The sudo command is used to execute a command as the root user. For example, the command sudo apt-get update will update the system’s package list as the root user. This command is often used to perform administrative tasks that require root privileges.
Conclusion
These are just a few of the many Linux commands that are available. There are many more commands that can be used to perform various tasks, and it is important to understand how to use them in order to get the most out of your Linux system.
