-
Book Overview & Buying
-
Table Of Contents
The Ultimate Ubuntu Handbook
By :
Linux file permissions control who can read, write, and execute files.
Use ls -l to see file permissions. They look like -rwxr-xr-x. The first character indicates the file type (- for a regular file, and d for a directory), and the following nine characters represent the permissions: read (r), write (w), and execute (x) for the owner, group, and others.
Use the chmod command to change permissions. For example, chmod u=rwx,g=rx,o=rx filename sets read, write, and execute permissions for the owner, and read and execute permissions for the group and others.
Use chown user:group filename to change the owner and group of a file.
Sometimes, you will need to temporarily elevate your privileges to run specific commands as an administrator. Ubuntu assumes that tasks that require administrative permissions are run with the...
Change the font size
Change margin width
Change background colour