I know I can assign the permission to write to an owner/group/others like this:

chmod u+w myfolder

Can I specify the specific user here? Some like this:

chmod username u+w myfolder
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5 Answers

You could use setfacl:

setfacl -m u:username:rwx myfolder

This sets permissions for specific users, without changing the ownership of the directory.

Check out the man page for further details and examples.

Note:

  • setfacl is short for set File ACL (Access Control List)

  • If you want to apply it recursively to all the subdirectories: add the -R flag like this:

    setfacl -R -m u:username:rwx myfolder
10

If you want to change the user owning this file or directory (folder), you will have to use the command chown. For instance, if you run

sudo chown username: myfolder

the user owning myfolder will be username. Then you can execute

sudo chmod u+w myfolder

to add the write permission to the username user.

But if you want to add this user to the group associated with "myfolder", you can run

sudo usermod -a -G groupname username

and then execute 

sudo chmod g+w myfolder

to add the write permission to the group.

9

No this is not possible. You can either change the owner of the file with

[sudo] chown username: foldername

or you can add the user to the group that owns the file with

usermod -a -G {group-name} username
2

If you want to apply it recursively to all the subdirectories: add the -R flag like this: 

setfacl -R -m u:username:rwx myfolder

In Ubuntu recursively (folder and it's all sub folders) giving permission to a specific user:

sudo chown -R <username>: <folderName>
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