The name . can be used as a shorthand for your current working directory. Although files of any type can conceivably be stored anywhere within the Unix filesystem, there are a few standard directories where certain types of files can usually be found. You may find it useful to know the sorts of files which can be found in certain system directories in the acpub clusters. A directory reserved for users to store temporary data. The directory where the most basic operating system executables and the majority of the basic shell command executables are stored.
Many useful applications reside here.
Your home directory When your acpub account was created, you were automatically assigned a personal directory. This directory is called your home directory , and with a few exceptions is the directory in which you will store all of your personal files. Your home directory's name will end with your login id. Many students' home directories are filed according to the first two letters of their login ids. All home directories on the acpub system can be accessed in this way, using the first two letters of the userid.