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Full Discussion: umask usage
Top Forums Shell Programming and Scripting umask usage Post 302519027 by AlphaLexman on Monday 2nd of May 2011 09:09:00 PM
Old 05-02-2011
'umask' is a subtractive value, so files and directories are evaluated differently.
Code:
umask 000; touch filename.txt

will have a octal value of 666 and,
Code:
umask 000; mkdir new_directory

will have an octal value of 777

You cannot set a 'umask' for files = '777'

Last edited by AlphaLexman; 05-02-2011 at 10:14 PM..
 

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umask(2)							System Calls Manual							  umask(2)

NAME
umask - set and get file creation mask SYNOPSIS
DESCRIPTION
sets the process's file mode creation mask to cmask and returns the previous value of the mask. Only the file access permission bits of the masks are used. The bits set in cmask specify which permission bits to turn off in the mode of the created file, and should be specified using the symbolic values defined in stat(5). EXAMPLES
The following creates a file named in the current directory with permissions so that the file can be written only by its owner, and can be read or executed only by the owner or processes with group permission, even though group write permission and all permissions for others are passed in to RETURN VALUE
The previous value of the file mode creation mask is returned. SEE ALSO
mkdir(1), sh(1), mknod(1M), chmod(2), creat(2), mknod(2), open(2). STANDARDS CONFORMANCE
umask(2)
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