#+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