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Top Forums UNIX for Dummies Questions & Answers Unmask Post 302241412 by agasamapetilon on Monday 29th of September 2008 09:17:06 AM

09-29-2008

Registered User

The mention command does a very simple thing. Actually with it you set the default permissions you want for files. It could be for every created file in the system or for a specific user session.

If you for example want for every single file only read permissions then you have to do this:

777(all permissions) - 444(read permissions) = 333, the umask for only readable permissions is: 333

Have a look here: Setting default permissions

Last edited by agasamapetilon; 09-29-2008 at 11:44 AM..

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LEARN ABOUT SUNOS

umask

umask(2)							   System Calls 							  umask(2)

NAME

       umask - set and get file creation mask

SYNOPSIS

       #include <sys/types.h>
       #include <sys/stat.h>

       mode_t umask(mode_t cmask);

DESCRIPTION

       The  umask() function sets the  process's file mode creation mask to cmask and returns the previous value of the mask. Only the access per-
       mission bits of cmask and the file mode creation mask are used. The mask is inherited by child processes. See intro(2) for more information
       on masks.

RETURN VALUES

       The previous value of the file mode creation mask is returned.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mkdir(1), sh(1), intro(2), chmod(2), creat(2), mknod(2), open(2), stat.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    28 Dec 1996 							  umask(2)