Re: How to check if a user already login?

[Todd Denniston]

Amaresh Chandra Das wrote, On 02/04/2009 12:53 AM:
> Hi Hez,
>
> Please use this bellow command ,
> if someone is logged in then you will get message like " \_ ssh
> address@hidden"
>
> # ps ax |grep -i cvs
>  1057 pts/2    S+     0:00 grep -i cvs
> 28728 pts/3    S+     0:00 ssh address@hidden
>
> # ps axfj |grep -i cvs
> 28076 30359 30358 28005 pts/2    30358 S+       0   0:00  |           \_
> grep -i cvs
> 28526 28728 28728 28437 pts/3    28728 S+       0   0:00              \_ ssh
> address@hidden
>
>
> Help me , if i am wrong,

I believe the above is wrong, in the context of the question asked.
To me, hezjing asked how to see if `cvs login` had been done, so that scripts 
which are being written could check prior to making cvs calls, perhaps in the 
hope of not doing something wrong later in the script because of the repo not 
being available to the script.

Assuming the user actually has a password on the server...
Assuming the repository is using pserver (you really should use ssh)
On a Unix machine the easiest way is to
export xorpw=`grep "$CVSROOT" ~/.cvspass |awk '{print $3}'`
if [ "$xorpw" != "A" ]
then
   LOGEDIN=true
else
   LOGEDIN=false
fi
echo $LOGEDIN

I am not sure where CVSNT|WINCVS hide their .cvspass file.

with ssh ...
Assuming:
A) $CVSROOT does not have a FQDN
B)  hostname on the server does not return a FQDN
C) no username in $CVSROOT
or
D) both $CVSROOT and hostname will give you the same FQDN
If the above assumptions are wrong then script around them, you are after all 
writing scripts. :)
MACHINE=`echo $CVSROOT |awk -F: '{print $3}'`
FROMMACHINE=`ssh $MACHINE hostname 2>/dev/null`
if [ "$FROMMACHINE" == "$MACHINE" ]
then
   LOGEDIN=true
else
   LOGEDIN=false
fi
echo $LOGEDIN



> --- On *Wed, 4/2/09, hezjing <address@hidden>* wrote:
> From: hezjing <address@hidden>
> Subject: How to check if a user already login?
> To: address@hidden
> Date: Wednesday, 4 February, 2009, 8:21 AM
>
> Hi
> I'm required to write a script to automate some CVS commands.
>
> Is there a CVS command to check if a user has already login?
>
>
> One way to do this is to execute a CVS command (e.g. cvs log or checkout)
> and observe the errors,
> but is there a more elegant way?
>
>
> Thank you!


--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter