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Full Discussion: regarding net
Top Forums Programming regarding net Post 302096328 by blowtorch on Wednesday 15th of November 2006 03:11:46 AM
Old 11-15-2006
phani_sree, I suggest reading up on the man page of popen. It returns a file pointer. And since you want to read the output of the command, you are supposed to fread/fgets/fscanf using that file pointer.

To get a carton of milk from the refrigerator, you:
1. open the door
2. take out the milk
3. close the door

What you are doing is analogous to:
1. open the door
2. close the door
 

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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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