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Topic: System Administration >> what is dot (.) and double dot (..) in linux, when we use ls -a

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 Title: what is dot (.) and double dot (..) in linux, when we use ls -a
 Monu  Posted: May 21, 2008 12:53:11 AM

 Total Post: 26
 Joined: Jan, 2008

 hi all,
what is dot (.) and double dot (..) in linux, when we use ls -a
could any one explain it in brief?

Posted: May 21, 2008 01:59:30 AM  

 Total Post: 30
 Joined: May, 2008

$ ls -a
Shows you all files, even files that are hidden (these files begin with a dot "."). Those hidden files are normally system files.

And the double dot (..) indicates the parent directory.

/home/oracle $ pwd
/home/oracle $ cd ..
/home $ pwd

Posted: May 21, 2008 02:01:39 AM  

 Total Post: 69
 Joined: Sep, 2007

i am not an expert on linux but as far as i know two dots(..) is the parent folder of your current folder.

Posted: May 21, 2008 02:02:56 AM  

 Total Post: 857
 Joined: Jan, 2006

The single dot represent the current directory, and double dot directory is the upper current directory.

Read from below site for more info

Posted: Jun 27, 2008 02:17:12 PM  

 Total Post: 615
 Joined: Jun, 2008


. - present working directory/current working directory - the directory in which the user is at present

.. - one directory before the current directory

ls -a - listing of hidden files in the current directory.Hidden files start with '.'prefix like .xauthority.

ls command doesn't list those files.So we can use ls -a command instead.

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