This tutorial will show you how to
change file/folder permissions
All files on UNIX (and UNIX variants) machines have access
permissions. These tell the operating system how to deal with
requests to access these files. There are three types of access:
Read - Denoted as
r, files with read access can be displayed to
Write - Denoted as
w, files with write access can be modified by
Execute - Denoted
as x, files with execute access can be executed
as programmes by the user.
Access types are set for three types of user group:
User - the owner
of the file.
Group - other files
which are in the same folder or group.
World - everyone
The web server needs to be able to read your web pages in order
to be able to display them in a browser. The following permissions
need to be set in order for your web site to function properly.
All HTML files and images
need to be readable by others. The setting for this
is 644 (readable by User, Group, and World, and writable
by User), and is set automatically when you upload files.
All folders need to be executable
by others. The setting for this is 755 (readable by
User, Group, and World, writable by User, executable
by User, Group, and World), and is set automatically
when you create a folder.
All CGI files (all files
in the cgi-bin folder) need to be executable
by other. The setting for this is 755 (readable by User,
Group, and World, writable by User, executable by User,
Group, and World), and is not set automatically
when you upload files. You need to change file permissions
manually. Refer to the Introduction to CGI topic for
Warning: It is important that none of your files or
folders are writable by anyone else. Any file or folder which
is writable by others can be erased by them. Generally
there is no problem, just be careful in how you set your permissions.
To change file or folder permissions:
Navigate to the file or folder that you need to change.
Click on the name of the file or folder.
Click on the Change Permissions link in the top-right
corner of the window.
Click on as many tick boxes as you require to create the
right permission. The permission numbers underneath the
tick boxes will update automatically.
Click on the Submit button when you have finished
setting the permission. The new permission level has now
been saved and the display updated to show the modified