Difference between revisions of "Permissions"

From John Freier
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(Read/Write/Execute)
Line 29: Line 29:
 
Set all the members(user, group, other) for a file to Read & Write
 
Set all the members(user, group, other) for a file to Read & Write
 
   chmod a=rw example.data
 
   chmod a=rw example.data
 +
 +
Set the User to Read, Write, & Execute
 +
  chmod u=rwx example.data
 +
 +
Add the Write permission to the Group for a file.
 +
  chmod g+w example.data
 +
 +
Remove the Read & Write from the Other membership of a file.
 +
  chmod o-rw example.data

Revision as of 14:39, 1 November 2021

Fix permissions

restorecon -R -v


Read/Write/Execute

               4               2               1
              Read            Write           Execute
       0 	No 	 	No 	 	No
       1 	No 		No 		Yes
       2 	No 		Yes 		No
       3 	No 		Yes 		Yes
       4 	Yes 		No 		No
       5 	Yes 		No 		Yes
       6 	Yes 		Yes 		No
       7 	Yes 		Yes 		Yes

Examples

    drw-r--r-- = (4+2+1)(4)(4) = 744
    
    User = (read/write)
    Group = (read)
    Other = (read)

Set all the members(user, group, other) for a file to Read & Write

 chmod a=rw example.data

Set the User to Read, Write, & Execute

 chmod u=rwx example.data

Add the Write permission to the Group for a file.

 chmod g+w example.data

Remove the Read & Write from the Other membership of a file.

 chmod o-rw example.data