Setting a permission for any future file created in this directory

Question

Hi can I make in linux any future file created in some directory, writable.

Thank you

gidi

François Feugeas · Answer 1 · 2011-01-21 11:51:31Z

up vote 2 down vote

Use umask. For instance :

umask 0000

Will make files created afterwards (ie, in the same session) have the rw permissions for everyone :

-rw-rw-rw-

Should you want to make that change persistant, just place it into ~/.bashrc (assuming your shell is bash).

umask works by bit-masking the default permissions used on file creation, check its man page for more details.

answered Jan 21 '11 at 11:51

François Feugeas
948512

	Thanks. How can I set this for a single specific directory? – gidireich Jan 21 '11 at 12:07
	Short answer : you can't, `umask` works on a per-session basis. I had overlooked this requirement in your question. If you can't use ACLs, I guess you could hack something into your user's `.bashrc` to set the umask only when in this specific directory. – François Feugeas Jan 21 '11 at 14:02

nsg · Answer 2 · 2011-01-21 12:03:00Z

up vote 2 down vote

You may also use the setuid-bit on a directory to force all created files to a specific group.

answered Jan 21 '11 at 12:03

nsg
22017

This is nice, but will not do the trick – gidireich Jan 21 '11 at 12:33

2 Answers