C:\>mkdir "with a space"

C:\>cd with a space

C:\with a space>

##</code><code>##

sisyphus-sis@debian-sis:~$ mkdir "with a space"
sisyphus-sis@debian-sis:~$ cd with a space
-bash: cd: with: No such file or directory
sisyphus-sis@debian-sis:~$ cd "with a space"
sisyphus-sis@debian-sis:~/with a space$