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Full Discussion: why do you hid file in Unix
Top Forums Shell Programming and Scripting why do you hid file in Unix Post 302170475 by joeyg on Monday 25th of February 2008 05:14:13 PM
Old 02-25-2008
Hammer & Screwdriver Hidden files

They would not be in plain site, thus
(a) not visible to ls or rm commands - and these are the typical tools used by users
(b) configuration and settings files

In general:
for safety sake to keep from deleting or modifying by mistake
to secure and group together

Think of it this way, you push open the door and walk into a room. You can now tell everything about the room, right? Did you step out of the way and see what is BEHIND the door? Perhaps something interesting or important! A hidden file can be the same thing - there to be found, if you remember to look for it.
 

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door_revoke(3DOOR)					      Door Library Functions						door_revoke(3DOOR)

NAME
door_revoke - revoke access to a door descriptor SYNOPSIS
cc -mt [ flag ... ] file ... -ldoor [ library ... ] #include <door.h> int door_revoke(int d); DESCRIPTION
The door_revoke() function revokes access to a door descriptor. Door descriptors are created with door_create(3DOOR). The door_revoke() function performs an implicit call to close(2), marking the door descriptor d as invalid. A door descriptor can only be revoked by the process that created it. Door invocations that are in progress during a door_revoke() invoca- tion are allowed to complete normally. RETURN VALUES
Upon successful completion, door_revoke() returns 0. Otherwise, door_revoke() returns -1 and sets errno to indicate the error. ERRORS
The door_revoke() function will fail if: EBADF An invalid door descriptor was passed. EPERM The door descriptor was not created by this process (with door_create(3DOOR)). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |all | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
close(2), door_create(3DOOR), libdoor(3LIB), attributes(5) SunOS 5.10 21 Aug 1997 door_revoke(3DOOR)
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