cp - copy files and directories.
Copy a file from one folder to another
cp /home/john/ubuntu.iso /home/john/backup/ubuntu.iso
Copy a file in the same folder
cp /home/john/ubuntu.iso /home/john/ubuntu-2.iso
Copy a directory and all its content
cp -r /home/john/files/ /home/john/backup-files/
Copy multiple files or directories
cp file1.txt file2.txt file3.txt /home/john/backup-files/
cp -r /home/john/txt/ /home/john/mp3/ /home/john/backup-files/
Copy multiple files or directories based on file extension
cp *.txt /home/john/backup-files/
Copy files with confirmation before overwriting
cp -i *.txt /home/john/backup-files/
Preserve attributes of file or directory while copying
cp -p *.txt /home/john/backup-files/