pwd -------------------Present Working Directory path

ls -------------------- To view directories and files in a folder

ls -R ----------------- To view subdirectories of directories.

ls -t

ls -l ------------------To view permissions, last modified date, size in bytes of particular folder.

ls -lt

ls -la -----------------To view all items including hidden items.

ls -lRa

ls -lr -----------------shows in reverse order.

ls -s ------------------To view size.

ls *.js ----------------To view all the js files in that folder.

ls Zoo* ----------------To view all the files with "Zoo" in its name.

ls .. ------------------list all directories and folder.

cd ---------------------------Go to

cd .. ------------------------Go to previously directory.

cd ../../ --------------------Go back twice.

touch ------------------------To create a file. {touch a.js}

cat --------------------------To view what is inside in a file. {cat a.js}