commandline chmod 770 ..
 

Hello, I am Dutch. So you can write dutch for me or easy english please?

Yes, i did something stupid what I do not know.

I did command:
sudo -s
chmod 770 .
chmod 770 ..

And now i cannot login on my test server noteboek.
Please do not ask why I use server software on my notebook.
Caus i like it and i use it only for typing text en learning linux commands. So i have a notebook with ubuntu server 8.04.2. And it has this problem about de commands I did stupid.
(I have more computers and hardware to support my self!)

First question is:
Why have linux after command ls -l -a this output?
drwxr-xr-x 21 root root 4096 2009-11-04 20:45 .
drwxr-xr-x 21 root root 4096 2009-11-04 20:45 ..


And how must it to set and use?
What is it's function?

How can i repair my server notebook?
Must i unmount my harddisk with a sqrewdriver and connect it to/on an other linux machine? If its needed, i can do that. But is there a more easy solution?

evarie,

So the "Why". Those dots "." and ".." indicate that the current directory you are listing its files has "parent directories". The first three columns at the left containing "drwsr-xr-x" tell you whether it is a regular file or a directory, the "permissions" of the folder or file, then the owner (and its group) the amount of memory it uses, dates and lastly the name.

ls command is for listing der files or directories it contained.

There is no need to do that. What you need is not a screwdriver but a good tutorial, get it by clicking here.

Your questions are very basic and require long explanation, the kind that you can better get from reading a good tutorial. Use the tutorial as your guide and mentor as you practice using terminal commands.

Good luck.

Dutch? No. The site operates only in English.

Easy English? For someone who is not a native speaker, this may be an oxymoron, but we'll try

For most of your questions, I recommend the Bash Guide for Beginners---free at http://tldp.org

As for how to take apart the notebook, I would think that Google would find lots of information. If you want to pursue it here, start a new thread. (It does not fit in a thread about chmod)

. means the directory you are currently in.
.. means the parent directory.

for example, if you are in /home/steve then . means /home/steve and .. means /home
if you are in /usr then . means /usr and .. mean /

. - current directory
.. - parent directory

Look at this example

i created a directory called a foo which is empty and is under this path

that is foo is under the directory ryan,doing ls revels ..

The 2 denotes (under the links category denotes that) no of links it has,in a unix system the default for a directory is 2.The 2 means that the directory 2 has 2 links..one connecting to the ryan directory(parent directory) and one to itself(current directory).

Creating a directory called tom inside foo will increment the count of foo by 1 making it 3.Because the directory foo is linked to Tom and Ryan. In the below example am creating tom outside foo.

===Before===

Ryan(2)
|
|
|

===After Creating Foo===
Ryan(2+1) ( parent+current+foo)
|
|=>Foo
|

===After Creating Tom====
Ryan(2+1+1) (parent+current+tom+foo)
|
|=>Foo
|=>Tom

For ryan parnet is home and current is itself and rest are Foo and Tom so that makes it 4.

Hope You got it

Only the dots i need to know?
 

Sorry, I forgot to say that I know how I must work with the commands:
ls
chmod
chown

I also know what means 421 with rwx

So, I do only want to know what these dots means?

But I do not know what will happen when I do:
chmod 770 .
chmod 770 ..

Ummmm, the answer has already been given:

For example:

".." means the host directory (If you are in /home/username/pictures, then ".." = /home/username

chmod -xyz .. means change the permissions for the host directory