How-to Set /Change Permissions to Files and Directories on Linux Mint 18 Sarah Shell

Linux Mint Setting Permissions on File System

The Linux Tutorial Shows You Step-by-step How-to Setup or Change the Permissions over Files and Directories on Linux Mint 18 Sarah Mate/Cinnamon/KDE/Xfce Desktops.

To Follow the Tutorial You will Need to have a Little Practice to Work on the Mint Linux Console Terminal Command Line.

Included in the Article Links to Guides on Getting-Started with Command Line on Linux Mint and to Setting Ownership over Linux Mint File System.

1. First Open a Command Line Terminal Console Window
   (Press “Enter” to Execute Commands)

   Mate:
   
   Cinnamon:
   
   KDE:
   
   Xfce:
   





2. How-to Quick-Start with Command Line on Mint Linux:

   Mint Console Quick-Start

   Getting-Started with Terminal on Mint.





3. Who Can Set/Change the Permissions?

   • You Can Freely Set/Change the Permissions Only on Files/Directories You Hold.
   • You Need Admin Super-Powers to Set/Change the Permissions on Entities You Do Not Hold!





4. Setting Up Permissions on Files and Directories

   Basic Building Blocks for the Permission Command

   Ownership Types:

   • Use ‘u‘ to Setup Permissions for the User Owner
   • Use ‘g‘ to Setup Permissions for the Group Owner
   • Use ‘u+g‘ to Setup Permissions for the User and Group Owner
   • Use ‘a‘ to Setup Permissions for All (World)
   • Use ‘o‘ for Revoking Actual Permissions and Giving Permissions to the Others (the Before Disabled ones)

   Permission Types:

   • Use ‘x‘ to Setup Execution Permission
   • Use ‘w‘ to Setup Write/Delete Permission
   • Use ‘r‘ to Setup Read Permission

   Giving/Removing Permissions:

   • Use ‘+‘ to Give Permission
   • Use ‘–‘ to Remove Permission

   Generic Permission Command Form:

   chmod ownershipSubject[+/-]r/w/x [myEntity]

   For Instance :

   mkdir $HOME/world

   To Give ‘All’ (read,write/delete,execute) Permissions on the ‘world’ Directory to the ‘World’:

   chmod a+rwx $HOME/world

   (Normally Take Care Before to Open a Directory to the World Because this Can Compromise Your System Security!)
   Now to Check Permissions Setup:

   ls -l $HOME

   To Remove the ‘Write/Delete’ Permission to the ‘World’:

   chmod a-w $HOME/world

   To Give the ‘Write/Delete’ Permission the ‘world’ Only to the Owner:

   chmod u+w $HOME/world

   To Give the ‘Write/Delete’ Permission the ‘world’ Also to the Owner’s Group:

   chmod g+w $HOME/world

   To Remove the ‘Execution’ Permission to the ‘World’:

   chmod a-x $HOME/world

   To Give the ‘Execution’ Permission to the ‘world’ to the Owner:

   chmod u+x $HOME/world

   To Give the ‘Execution’ Permission to the ‘world’ Also to the Owner’s Group:

   chmod g+x $HOME/world

   (After Only You and Your Group will be Able to Access the ‘world’ Directory Directory on Shell!)

5. How-to Set Ownership on Linux Mint File System:

   Mint Setting Ownership Quick-Start

   Setting Up Ownership on Mint.

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