10.0;umask, revision 1.0, 88/01/21
umask -- set UNIX file-creation mode mask
usage: umask [nnn]
DESCRIPTION
umask sets or displays your UNIX file-creation-mode mask. This is an
internal shell command.
ARGUMENTS
nnn (optional)
Specify the read/write/execute permissions for owner, group,
and others, respectively. The value of each specified octal
digit is subtracted from the corresponding "digit" specified
by the system for the creation of a file.
Default if omitted: display current mask value
EXAMPLES
To remove write permission of the group and others, execute the following
command.
$ umask 022
Files normally created with mode 777 become mode 755; files created with
mode 666 become mode 644.