UMASK - UDM Manager configuration option
Description
The UMASK option specifies the file mode creation mask. It affects the file permission bits of newly created files and directories.
When the file permission mode is not obtained from the source file, newly created files are created with a permission mode of 666, which is read-write permission for the owner, group, and other categories. All directories are created with a permission mode of 777, which is read-write-execute permission for owner, group, and other categories. UDM uses UMASK to turn off selected permission bits by subtracting the value of UMASK from the file mode 666 or directory mode 777.
Note
To set file permissions, the File Permission (mode) attribute is the recommended method.
Usage
Method | Syntax | IBM i | UNIX | Windows | z/OS |
Command Line, Short Form | n/a | ||||
Command Line, Long Form | -umask number | ||||
Environment Variable | UDMUMASK=number | ||||
Configuration File Keyword | umask number | ||||
STRUDM Parameter | n/a |
Values
number can be any number, 001 to 666.
Default is 026.
The default value, 026, results in file permission 640 (666 - 026 = 640), which is:
- read-write for the owner
- read for the group
- none for others
The default value, 026, results in directory permission 751 (777 - 026 = 751), which is:
- read-write-execute for the owner
- read-execute for the group
- execute for others
References
Refer to the UNIX man page umask(1) for complete details.