🚀Day 12 Linux cheat-sheet
Hello there! I'm a passionate Java Full Stack Developer with expertise in React and an insatiable curiosity for DevOps practices. I am constantly expanding my skill set to deliver seamless end-to-end solutions.
My journey began with Java, where I developed a strong foundation in object-oriented programming and back-end development. Over the years, I have worked extensively with Java frameworks like Spring and Hibernate, leveraging their powerful features to build scalable and efficient server-side applications. From designing robust databases to implementing RESTful APIs.
Eager to enhance my skills, I embarked on a journey to learn DevOps.
#Java #FullStack #React #DevOps #Docker #Kubernetes #Jenkins #Git #Spring #Hibernate #JavaScript #Redux #RESTfulAPIs #CleanCode #ContinuousIntegration #Collaboration #ProblemSolving #SoftwareDevelopment
đź“ŚNavigation and File Management
| 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. |
đź“ŚText 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. |
đź“ŚSystem 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. |
đź“ŚPermissions 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. |
đź“ŚNetwork 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. |
đź“ŚPackage 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). |
đź“ŚMiscellaneous
| 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 🚀💪
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Happy Learning! 💻✨