permission for users who are not in the file's group, then the mode:
+w
adds permission to write to the file to its owner and to other users who
are in the file's group, but _not_ to other users. In contrast, the
mode:
a+w
ignores `umask', and _does_ give write permission for the file to all
users.
pinfo umask
q
1The Umask and Protection
------------------------
If the USERS part of a symbolic mode is omitted, it defaults to `a'
(affect all users), except that any permissions that are _set_ in the
system variable `umask' are _not affected_. The value of `umask' can
be set using the `umask' command. Its default value varies from system
to system.
Omitting the USERS part of a symbolic mode is generally not useful
with operations other than `+'. It is useful with `+' because it
allows you to use `umask' as an easily customizable protection against
giving away more permission to files than you intended to.
As an example, if `umask' has the value 2, which removes write
permission for users who are not in the file's group, then the mode:
+w
adds permission to write to the file to its owner and to other users who
are in the file's group, but _not_ to other users. In contrast, the
mode:
a+w
ignores `umask', and _does_ give write permission for the file to all
users.
The Umask and Protection
------------------------
If the USERS part of a symbolic mode is omitted, it defaults to `a'
(affect all users), except that any permissions that are _set_ in the
system variable `umask' are _not affected_. The value of `umask' can
be set using the `umask' command. Its default value varies from system
to system.
Omitting the USERS part of a symbolic mode is generally not useful
with operations other than `+'. It is useful with `+' because it
allows you to use `umask' as an easily customizable protection against
giving away more permission to files than you intended to.
As an example, if `umask' has the value 2, which removes write
permission for users who are not in the file's group, then the mode:
+w
adds permission to write to the file to its owner and to other users who
are in the file's group, but _not_ to other users. In contrast, the
mode:
a+w
ignores `umask', and _does_ give write permission for the file to all
users.
The Umask and Protection
------------------------
If the USERS part of a symbolic mode is omitted, it defaults to `a'
(affect all users), except that any permissions that are _set_ in the
system variable `umask' are _not affected_. The value of `umask' can
be set using the `umask' command. Its default value varies from system
to system.
Omitting the USERS part of a symbolic mode is generally not useful
with operations other than `+'. It is useful with `+' because it
allows you to use `umask' as an easily customizable protection against
giving away more permission to files than you intended to.
As an example, if `umask' has the value 2, which removes write
permission for users who are not in the file's group, then the mode:
+w
adds permission to write to the file to its owner and to other users who
are in the file's group, but _not_ to other users. In contrast, the
mode:
a+w
ignores `umask', and _does_ give write permission for the file to all
users.
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