filesystem

# change to the 'myfolder' directory within the current directory
$ cd myfolder/
$ cd ./myfolder
$ cd myfolder
$ cd ../myfolder_parent/myfolder

# change to the 'usr' directory within the root directory
$ cd /usr/
$ cd /usr

# change to your home directory
$ cd /Users/jmeyer/
$ cd ~
$ cd $HOME

# navigate up two directories and check pwd
$ cd ~
$ cd ../..
$ pwd
/