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Message-ID:	<db48634c-7062-bc00-ff1d-203b295b859c@Shaw.ca>
Date:	Sat, 12 Aug 2023 11:14:52 -0600
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Subject:	Re: lsof for Windows processes?
To:	cygwin AT cygwin DOT com
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Organization:	Inglis
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From:	Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	cygwin AT cygwin DOT com
Cc:	Brian Inglis <Brian DOT Inglis AT Shaw DOT ca>,
	Cedric Blancher <cedric DOT blancher AT gmail DOT com>
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On 2023-08-12 05:34, Cedric Blancher via Cygwin wrote:
> Good afternoon!
> 
> On Fri, 11 Aug 2023 at 18:21, Brian Inglis <Brian DOT Inglis AT shaw DOT ca> wrote:
>>
>> On 2023-08-11 09:45, Cedric Blancher via Cygwin wrote:
>>> Does Cygwin have a tool like lsof which can list which files or
>>> directories are in use by a Windows process?
>>
>> You can check these things yourself using the Cygwin Search Packages page:
>>
>>          https://cygwin.com/packages/
>>
>> type "usr/bin/lsof" and hit Enter:
>>
>>          https://cygwin.com/cgi-bin2/package-grep.cgi?grep=usr%2Fbin%2Ffuser
>>
>>          Search Results
>>
>>          Found 0 matches for usr/bin/lsof
>>
>> and the same on the command line:
>>
>>          $ cygcheck -p usr/bin/lsof
>>          Found 0 matches for usr/bin/lsof
>>
>> but Cygwin does have fuser:
>>
>> $ cygcheck -p usr/bin/fuser
>> Found 6 matches for usr/bin/fuser
>> cygfuse-3.2.0-2 - cygfuse: Cygwin interface to Windows FUSE providers
>> cygfuse-3.2.0-3 - cygfuse: Cygwin interface to Windows FUSE providers
>> psmisc-debuginfo-22.20-1 - psmisc-debuginfo: Debug info for psmisc
>> psmisc-debuginfo-23.4-4 - psmisc-debuginfo: Debug info for psmisc
>> psmisc-22.20-1 - psmisc: Utilities for managing processes on your system
>> psmisc-23.4-4 - psmisc: Utilities for managing processes on your system
>>
>> and Windows has openfiles:
>>
>> $ cmd /c help openfiles
>>
>> OPENFILES /parameter [arguments]
>>
>> Description:
>>       Enables an administrator to list or disconnect files and folders
>>       that have been opened on a system.
>>
>> Parameter List:
>>       /Disconnect      Disconnects one or more open files.
>>
>>       /Query           Displays files opened locally or from shared
>>                        folders.
>>
>>       /Local           Enables / Disables the display of local open files.
>>
>>       /?               Displays this help message.
>>
>> Examples:
>>       OPENFILES /Disconnect /?
>>       OPENFILES /Query /?
>>       OPENFILES /Local /?
> 
> Thank you.
> 
> But neither openfiles or fuser seem to work in this case, even if I
> have a file open in my bash shell, and call fuser in the same bash
> script:
> 
> bash -c 'command exec {n}</mynfsmount/myfile.txt ; echo "fd=$n" ;
> fuser -a /mynfsmount ; true'
> 
> gives
> 
> fd=10
> /mynfsmount:
> 
> (no processes listed, which might be correct, as maybe a non cygwin
> process has that file open)

I use it to tell me when build processes close their logs.

Currently on X (lightly sanitized):

$ fuser -av ~/.xsession-errors
Cannot stat file /proc/14838/fd/0: No such device or address
Cannot stat file /proc/14838/fd/1: No such device or address
Cannot stat file /proc/14838/fd/2: No such device or address
Cannot stat file /proc/14931/fd/0: No such device or address
Cannot stat file /proc/14931/fd/1: No such device or address
Cannot stat file /proc/14931/fd/2: No such device or address
			USER	  PID ACCESS COMMAND
$HOME/.xsession-errors:
			$USER	14962 F.... fbxkb
			$USER	14935 F.... xwin-xdg-menu
			$USER	14964 F.... mintty

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

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