49 lines
1.0 KiB
Org Mode
49 lines
1.0 KiB
Org Mode
|
#+options: toc:nil num:nil author:nil
|
||
|
|
|
||
|
|
* Changing permissions for files and directories
|
||
|
|
|
||
|
|
There are three types of permissions for files and directories in the system:
|
||
|
|
|
||
|
|
1. Read ('r')
|
||
|
|
2. Write ('w')
|
||
|
|
3. Execute ('x')
|
||
|
|
|
||
|
|
The permissions can be differente for users: owner - group - others
|
||
|
|
|
||
|
|
** Creating a file and checking permissions
|
||
|
|
|
||
|
|
Here we create a file with the sentence "this is a fancy file". The sentence is
|
||
|
|
redirected to the name "fancyfile.org" and a new file is created!
|
||
|
|
|
||
|
|
#+begin_src bash
|
||
|
|
echo "this is a fancy file" > fancyfile.org
|
||
|
|
#+end_src
|
||
|
|
|
||
|
|
#+RESULTS:
|
||
|
|
|
||
|
|
In the ouptut of ~ls~ command, there letters showing each permission for each user: owner, group, others, respectively.
|
||
|
|
|
||
|
|
#+begin_src bash
|
||
|
|
ls -la fancyfile.org
|
||
|
|
#+end_src
|
||
|
|
|
||
|
|
#+RESULTS:
|
||
|
|
: -rw-r--r-- 1 compartido compartido 21 jul 18 06:06 fancyfile.org
|
||
|
|
|
||
|
|
** Settings permissions for the file
|
||
|
|
|
||
|
|
#+begin_src bash
|
||
|
|
chmod o=r,g=rw,o=r fancyfile.org
|
||
|
|
#+end_src
|
||
|
|
|
||
|
|
#+RESULTS:
|
||
|
|
|
||
|
|
Then it changed!
|
||
|
|
|
||
|
|
#+begin_src bash
|
||
|
|
ls -la fancyfile.org
|
||
|
|
#+end_src
|
||
|
|
|
||
|
|
#+RESULTS:
|
||
|
|
: -rw-rw-r-- 1 compartido compartido 21 jul 18 06:06 fancyfile.org
|