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Subject:	Re: ps with command line arguments
From:	AZ 9901 <az9901 AT gmail DOT com>
In-Reply-To:	<14983C5E-E9B8-49A8-B554-A9C5C026426F@gmail.com>
Date:	Mon, 20 May 2013 10:32:07 +0200
Message-Id:	<189F0AC0-FDC2-4310-9118-A401EAED82FA@gmail.com>
References:	<ADAB05FC-DE25-4BEC-9362-081C5046E57A AT gmail DOT com> <14983C5E-E9B8-49A8-B554-A9C5C026426F AT gmail DOT com>
To:	cygwin AT cygwin DOT com
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Le 7 mai 2013 à 15:30, AZ 9901 a écrit :

> Le 7 mai 2013 à 10:46, AZ 9901 a écrit :
> 
>> Hello,
>> 
>> I run a bash script in a multi-user environment.
>> This script uses "ps -ef" in particular to list all its instances.
>> 
>> On a common UNIX / Linux system, it gives something like this :
>> bobby     20326 20318  0 10:21 ?        00:00:00 /bin/bash ./myscript.sh
>> marty     20330 20342  0 10:23 ?        00:00:00 /bin/bash ./myscript.sh
>> dudul     20339 20363  0 10:25 ?        00:00:00 /bin/bash ./myscript.sh
>> Perfect !
>> 
>> With Cygwin, "ps -ef" does not give command line arguments, so the script can't list its instances.
>> I was thinking about using procps or printing /proc/*/cmdline.
>> However, some of the users do not have admin rights, so they are not allowed to access /proc/<pid>/cmdline, /proc/<pid>/stat etc... of other users...
>> 
>> This is why "ps -ef" giving command line arguments would be really perfect !
> 
> I also just tested a workaround using the bash builtin command "exec".
> I put the following lines at the beginning of my script :
> 
> if [[ ! "$EXEC" ]]
> then
>    export EXEC=1
>    exec -a myscript /bin/bash "$0" "$@"
> fi
> 
> Then, on a common UNIX / Linux system, "ps -ef" gives something like this :
> bobby     20326 20318  0 10:21 ?        00:00:00 myscript ./myscript.sh
> marty     20330 20342  0 10:23 ?        00:00:00 myscript ./myscript.sh
> dudul     20339 20363  0 10:25 ?        00:00:00 myscript ./myscript.sh
> Perfect.
> 
> But on Cygwin, it still gives this :
> bobby     20326 20318  0 10:21 ?        00:00:00 /usr/bin/bash
> marty     20330 20342  0 10:23 ?        00:00:00 /usr/bin/bash
> dudul     20339 20363  0 10:25 ?        00:00:00 /usr/bin/bash
> 
> I would have liked to see "myscript" instead of "/usr/bin/bash"...

Hello,

Do you think ps command could be corrected / improved to display "myscript" (script's name according to the example above) and/or command line arguments ?

Thank you very much !

Best regards,

Ben


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