How to use CP command in linux (or ubuntu) ZZ

To make a copy of a file in the current directory, enter:

cp prog.c prog.bak

To copy a file in your current directory into another directory, enter:

cp jones /home/nick/clients

To copy all the files in a directory to a new directory, enter:

cp /home/janet/clients/* /home/nick/customers

To copy a directory, including all its files and subdirectories, to another directory, enter:

cp -R /home/nick/clients /home/nick/customers

To use pattern-matching characters to copy files, enter:
cp programs/*.c .
This copies the files in the programs directory that end with .c to the
current directory, signified by the single . (dot). You must type a
space between the c and the final dot.