umask will be used for setting the default file creation permissions.When a file is created, its permissions are set by default, depending on the umask setting configured.
This value is usually set for all users in /etc/profile and can be obtained by typing command umask:
For example, with umask value of 000, files get mode 666 and directories get mode 777. As a result, with a default umask value of 022, newly created files get a default mode 644 (666 – 022 = 644) and directories get a default mode 755 (777 – 022 = 755).
To change the umask value:
For example, if you want by default all the,
- New directories to get permissions rwxr-x—- (Mode: 750)
- New files to get permissions rw-r—– (Mode 640)
You need to use a umask value which removes all rights to other, and write permissions to the group and the value is 027. The command to use to set this:
# umask 027