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Full Discussion: Can DOS close an open file?
Special Forums Windows & DOS: Issues & Discussions Can DOS close an open file? Post 302272685 by quattro20v on Wednesday 31st of December 2008 10:48:58 AM
Old 12-31-2008
Can DOS close an open file?

I'm trying to setup a cron job for my brother that goes out to the web and retrieves an excel file and overwrites the existing copy on his desktop. The problem I'm facing is I have to kill the process (excel.exe) if the file is open while the batch file runs, otherwise, it will create another copy with a 1 or 2 or 3, etc appended to the end of the filename. For example, the correct filename would be myfile.xls and it will create myfile.xls(1). So, I kill the process before it goes out to the web to retrieve the file. This works, but ideally, I would like to close that particular file without killing the process in the event he has other files in open state . . . is this possible?
 

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KILL(2) 							System Calls Manual							   KILL(2)

NAME
kill - send signal to a process SYNOPSIS
kill(pid, sig); DESCRIPTION
Kill sends the signal sig to the process specified by the process number in r0. See signal(2) for a list of signals. The sending and receiving processes must have the same effective user ID, otherwise this call is restricted to the super-user. If the process number is 0, the signal is sent to all other processes in the sender's process group; see tty(4). If the process number is -1, and the user is the super-user, the signal is broadcast universally except to processes 0 and 1, the scheduler and initialization processes, see init(8). Processes may send signals to themselves. SEE ALSO
signal(2), kill(1) DIAGNOSTICS
Zero is returned if the process is killed; -1 is returned if the process does not have the same effective user ID and the user is not super-user, or if the process does not exist. ASSEMBLER
(kill = 37.) (process number in r0) sys kill; sig KILL(2)
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