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Top Forums UNIX for Dummies Questions & Answers differentiate between a file and a device Post 302200708 by keith_hampson on Thursday 29th of May 2008 10:07:45 PM
Old 05-29-2008
well i have a operating systems module at uni and i noticed this question in an old exam paper and cant find an answer to it anywhere. i thought it might have something to do with the arguments that open the file/device maybe.
 

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getdevpolicy(1M)					  System Administration Commands					  getdevpolicy(1M)

NAME
getdevpolicy - inspect the system's device policy SYNOPSIS
/usr/sbin/getdevpolicy [device...] DESCRIPTION
Without arguments, getdevpolicy outputs the device policy in effect to standard output. With arguments, each argument is treated as a pathname to a device and the device policy in effect for that specific device is printed pre- ceeded by the supplied pathname. USAGE
The device policy adds access restrictions over and above the file permissions. EXIT STATUS
The following exit values are returned: 0 Successful completion. non-zero An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |See below | +-----------------------------+-----------------------------+ The invocation is evolving. The output is unstable. SEE ALSO
add_drv(1M), rem_drv(1M), update_drv(1M), attributes(5), privileges(5), devfs(7FS) SunOS 5.10 9 Apr 2004 getdevpolicy(1M)
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