🚀Day 12 Linux cheat-sheet

Command	Description
`ls`	List files and directories in the current directory.
`cd directory`	Change to the specified directory.
`pwd`	Print the current working directory path.
`mkdir directory`	Create a new directory.
`rm file`	Remove/delete a file.
`rm -r directory`	Remove a directory and its contents.
`cp source dest`	Copy files/directories from source to destination.
`mv source dest`	Move/rename files/directories.
`find directory -name filename`	Search for files by name.

📌Text Processing and Viewing

Command	Description
`cat file`	Display the contents of a file.
`grep pattern file`	Search for a pattern in a file.
`less file`	View file contents interactively.
`head -n lines file`	Display the first N lines of a file.
`tail -n lines file`	Display the last N lines of a file.
`sort file`	Sort lines in a file.
`sed 's/old/new/' file`	Stream editor for text manipulation.
`awk '{ print $1 }' file`	Process and extract data from text files.

📌System Information and Processes

Command	Description
`ps`	Display a list of currently running processes.
`top`	Monitor system processes and resource usage.
`df -h`	Display disk space usage in human-readable format.
`du -h directory`	Display directory space usage in human-readable format.
`free -h`	Display memory usage.
`uptime`	Display system uptime and load averages.
`netstat -tuln`	List open network ports.
`who`	Display users currently logged in.
`w`	Display detailed information about logged-in users.
`htop`	Interactive process viewer.

📌Permissions and Users

Command	Description
`chmod permissions file`	Change file permissions.
`chown user:group file`	Change file ownership.
`passwd`	Change the user password.
`useradd username`	Create a new user.
`usermod -aG group username`	Add the user to a group.
`su username`	Switch user or become superuser.
`sudo command`	Execute a command with superuser privileges.
`groups username`	Display groups a user belongs to.
`id username`	Display user and group information.

📌Network and Connectivity

Command	Description
`ifconfig`	Display network interface information.
`ip addr`	Display IP addresses and network interfaces.
`ping hostname`	Send ICMP echo requests to a host.
`nslookup domain`	Look up DNS information for a domain.
`ssh user@hostname`	Connect to a remote server using SSH.
`scp source dest`	Securely copy files between hosts.
`curl URL`	Transfer data to or from a server.
`wget URL`	Download files from the internet.

📌Package Management

Command	Description
`apt-get install pkg`	Install a package using APT (Debian/Ubuntu).
`yum install pkg`	Install a package using YUM (CentOS/RHEL).
`dnf install pkg`	Install a package using DNF (Fedora).
`apt-get update`	Update package information (APT).
`yum update`	Update installed packages (YUM).
`dnf update`	Update installed packages (DNF).
`apt-cache search pkg`	Search for a package (APT).
`rpm -qa`	List all installed packages (RPM).

📌Miscellaneous

Command	Description
`date`	Display the current date and time.
`cal`	Display a calendar.
`echo text`	Print text to the terminal.
`history`	Display the command history.
`man command`	Display the manual page for a command.
`alias`	Create custom command shortcuts.
`shutdown`	Shut down or restart the system.
`reboot`	Reboot the system.
`uname -a`	Display system information.

🌟 Conclusion:

Congratulations! 🎉

This comprehensive cheat sheet covers a variety of Linux commands categorized into different sections. Feel free to print or save it for quick reference! Remember to explore the manual pages (man command) for more detailed information on each command.

We hope this blog has given you a Question/Answer 🚀💪

🔍 Did you find this blog helpful? Let us know in the comments below! 👇 And if you have any questions or need further assistance, we're here to help! 🤗

Happy Learning! 💻✨