Umask - Revision history

24.170.177.130: Proper usage

2005-11-25T06:07:56Z

Proper usage

203.206.60.108 at 03:34, 2 July 2005

2005-07-02T03:34:57Z

Jimbo at 14:23, 18 October 2004

2004-10-18T14:23:26Z

Dave at 23:04, 12 September 2004

2004-09-12T23:04:39Z

New page

[[umask]] defines what permissions files are given when you create them. The umask is set in your [[.profile]] (or shell profile, like [[.cshrc]] or [[.bashrc]], etc) and will be set with the simple line (just like you would give on the command line):

umask xxx
where xxx is the inverse of the [[numeric_permissions]] that you want the file to have. To clarify: you have to subtract your [[umask]] value from 777 to get the umask value that will vige you the permissions you want.

If you set a umask of 027
and then subtract it from 777
means your files have a default permission of 750

Which means your default files will be created with -rwxr-x--- permissions.

← Older revision		Revision as of 06:07, 25 November 2005
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	Which means your default files will be created with -rwxr-x--- permissions.		Which means your default files will be created with -rwxr-x--- permissions.
		+
		+	==Proper usage==
		+
		+	The first digit should always be 0. This allows you, the file owner, full rwx permissions for the files you create.
		+
		+	The third digit should be one of 2, 3, 6, 7. These give other people permissions of r-x, r--, --x, or ---. (avoiding write permission) If you have web pages in your home directory, be sure to consider the affect your choice will have. Setting an [[ACL]] may be useful.
		+
		+	The second digit should match the third digit if your [[group]] is shared with other people. In this case, other people are considered to be potentially hostile. If you have a group all to yourself, probably with the same name as your username, then you should make the second digit match the first digit. In this case, called user-private groups, [[SysV]]-style group inheritance on directories (not available on all BSD systems) can be used to make shared project permissions easier to deal with.
		+
	[[Category:System Commands]] [[Category:FreeBSD Terminology]]		[[Category:System Commands]] [[Category:FreeBSD Terminology]]

← Older revision		Revision as of 14:23, 18 October 2004
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	Which means your default files will be created with -rwxr-x--- permissions.		Which means your default files will be created with -rwxr-x--- permissions.
		+	[[Category:System Commands]] [[Category:FreeBSD Terminology]]

@@ Line 2: / Line 2: @@
   umask xxx
-where xxx is the inverse of the [[numeric_permissions]] that you want the file to have. To clarify: you have to subtract your [[umask]] value from 777 to get the umask value that will vige you the permissions you want.
+where xxx is the inverse of the [[numeric_permissions]] that you want the file to have. To clarify: you have to subtract your [[umask]] value from 777 to get the umask value that will give you the permissions you want.
 If you set a umask of                          027