Programming and posix - April 2002

April 3, 2002
Solution Symposium
Page 9
hp e3000
programming
and posix
permission mode bits
• User Group Other
rwx rwx rwx
• Specified in chmod command symbolically or as 3 octal
digits:
• chmod u=rwx,g=rx,o=x file
• equivalent to chmod 751 file
• The umask command and function specifies a mask of
permission modes to be disabled when files are created
• umask 007 denies all access to “other”
• remains in effect until another umask or logoff