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"ssh user@host command" runs under a different user?

Posted on 2013-01-28
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Last Modified: 2013-01-28
Hi there,

I'm trying to use "ssh user@host command" to run a command on host as user.  However it looks like the command is running under a different user.  Anyone can confirm this or did I miss anything?

Thanks.

Tom
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Question by:thomaszhwang
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LVL 68

Assisted Solution

by:woolmilkporc
woolmilkporc earned 1500 total points
ID: 38826649
No, it doesn't run under a different user.

Verify with

ssh user@host id

or

ssh -tt user@host who am i

Could it be that user doesn't have the same privileges on host as on the local machine?
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LVL 31

Assisted Solution

by:farzanj
farzanj earned 500 total points
ID: 38826938
Just to make sure that ssh was successful, make sure you are where you expected.

issue commands
whoami
hostname -f
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Author Comment

by:thomaszhwang
ID: 38826964
I just tried "ssh user@host 'whoami'" and it return user, so it means the user is the correct user.

I also tried to run the command separately: run "ssh user@host" first and then "command" and everything is ok.

Any idea?  Thanks.

Tom
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LVL 68

Assisted Solution

by:woolmilkporc
woolmilkporc earned 1500 total points
ID: 38826979
So why do you think that you're running the remote command under a different user?

Any error messages?

Is the remote user a member of the same group(s) as on the local machine?
Is the numerical user id the same on both machines?

That's why I suggested running "id".
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Author Comment

by:thomaszhwang
ID: 38827035
I just tried again.  The id returns the correct result.

The reason why I think it might be running under a different user is because the command I tried to run is a Pig Latin script which requires a valid version of Java and the error message reported Java_Home is missing, which is very typical when I tried to run such script under a different user or run under sudo which has a different JAVA_HOME setting.
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LVL 68

Accepted Solution

by:
woolmilkporc earned 1500 total points
ID: 38827051
It rather seems that the user in question doesn't have the correct settings in their profile on the remote machine!
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Author Closing Comment

by:thomaszhwang
ID: 38827078
Thanks.
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