If I want a directory and file to have the permissions:
-rw-r---w- -file
drwxr-x-w- - directory
why doesn't my umask value of 024 work?
2 Answers
Files are typically created with permissions rw-rw-rw- (before the umask is applied), directories with permissions rwxrwxrwx. Since you want rw-r---w- and rwxr-x-w- respectively, you need to mask ----w-r-x.
You can set this using
umask 025 (set the mask as an octal value), or
umask u=rwx,g=rx,o=w (set the allowed permissions in symbolic mode).
See Why doesn't umask change execute permissions on files? for a discussion of default permissions.
The default mask is u=rwx,g=rwx,o=rwx (octal 000)
umask u=rwx,g=rx,o=rx symbolic mode umask 022 numeric mode A numeric mask replaces the current file mode creation mask. It is specified as an unsigned octal integer, constructed from the logical OR (sum) of the following mode bits (leading zeros can be omitted):
0400 ( a=rwx,u-r) Read by owner 0200 ( a=rwx,u-w) Write by owner 0100 ( a=rwx,u-x) Execute (search in directory) by owner 0040 ( a=rwx,g-r) Read by group 0020 ( a=rwx,g-w) Write by group 0010 ( a=rwx,g-x) Execute/search by group 0004 ( a=rwx,o-r) Read by others 0002 ( a=rwx,o-w) Write by others 0001 ( a=rwx,o-x) Execute/search by others To check umask value :
$ umask -S u=rwx,g=rx,o=rx 
- (1) This answer is little more than ‘‘RTFM’’, except you politely read the manual to the OP. But it doesn’t really answer the question. (2) What do you mean by ‘‘A numeric mask replaces the current file mode creation mask.’’?G-Man Says 'Reinstate Monica'– G-Man Says 'Reinstate Monica'2022-07-31 13:13:13 +00:00Commented Jul 31, 2022 at 13:13
drwxr-x-w-)?