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Top Forums UNIX for Dummies Questions & Answers How to calculate umask values? Post 302649895 by ahmedwaseem2000 on Friday 1st of June 2012 08:24:09 AM
Old 06-01-2012
Thanks for the reply. still I find it difficult to understand. do you have any standard steps or formula to derive it?
 

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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 5.11 28 Dec 1996 umask(2)
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