Changing Default File/Directory Modes

Harlin · 02-06-2007, 11:13 AM

I have a user when he creates a directory, the directory is given a 755 mode (User: Read,Write,Execute; Group:Read, Execute; Others:Read, Execute). How can I set this up so that when a user creates a file/directory it is given a 775 mode?

Thanks,

Harlin Seritt

MOS JEFF-INITELY · 02-06-2007, 11:52 AM

the command `umask` is used to set default values for your file permissions when the files are created. `umask 002` is the command to change the default permissions to 775 when the file is created.

ease-e

nx5000 · 02-06-2007, 11:56 AM

Add this line in ~/.bash_profile:
umask 002

If you want this automatic for new users, put it in /etc/login.defs:

Quote:

Originally Posted by /etc/login.defs

# UMASK usage is discouraged because it catches only some classes of user
# entries to system, in fact only those made through login(1), while setting
# umask in shell rc file will catch also logins through su, cron, ssh etc.
#
# At the same time, using shell rc to set umask won't catch entries which use
# non-shell executables in place of login shell, like /usr/sbin/pppd for "ppp"
# user and alike.
#
# Therefore the use of pam_umask is recommended (Debian package libpam-umask)
# as the solution which catches all these cases on PAM-enabled systems.
#
# This avoids the confusion created by having the umask set
# in two different places -- in login.defs and shell rc files (i.e.
# /etc/profile).
#
# For discussion, see #314539 and #248150 as well as the thread starting at
# http://lists.debian.org/debian-devel.../msg01598.html
#
# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
#
ERASECHAR 0177
KILLCHAR 025
# 022 is the "historical" value in Debian for UMASK when it was used
# 027, or even 077, could be considered better for privacy
# There is no One True Answer here : each sysadmin must make up his/her
# mind.
#UMASK 022

Harlin · 02-06-2007, 06:23 PM

Hi NX,

Thanks for the help on this :-)!!! One thing though I did want to ask is how can i specify this only for a certain user(s)?

Anyways, thanks for the help -- this is a life saver.

Harlin Seritt

nx5000 · 02-07-2007, 08:13 AM

Quote:

Originally Posted by Harlin

Hi NX,

Thanks for the help on this :-)!!! One thing though I did want to ask is how can i specify this only for a certain user(s)?

You're welcome :-)
Its the first line, put it in $HOME/.bash_profile of the user you want it to be affected.

For pam, I never tried it.