🐧 Linux Learning Notes

# List files
ls -la

# Change directory
cd /path/to/dir

# Copy file
cp source.txt dest.txt

# Move/Rename
mv old.txt new.txt

# Remove file
rm file.txt

# Remove directory
rm -rf folder/

# Change permissions
chmod 755 file.sh    # rwxr-xr-x
chmod +x script.sh   # Add execute

# Change owner
chown user:group file.txt

# List processes
ps aux

# Kill process
kill -9 <pid>

# Background process
command &

# View resource usage
top / htop

# Find file
find /path -name "*.txt"

# Search in files
grep "pattern" file.txt
grep -r "pattern" ./

# Disk usage
df -h
du -sh folder/

# System info
uname -a
cat /etc/os-release