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I am using the following batch file to log in to my server as root:

start C:\Putty_all\PUTTY.exe -v -ssh [email protected] -pw password

When I have logged in, I want to change user to oracle. How do I do that?

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  • That's what su(1) is for. And change that password you published here as soon as possible!
    – vonbrand
    Mar 1, 2013 at 10:26

2 Answers 2

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You can specifiy commands to be executed on the remote system with the -m <filename> parameter. In the specified file you can have as many commands as you want (one per line).

So you can for example do the following:

set ssh_cmds=%SYSTEMDRIVE%\TEMP\ssh_cmds.txt echo sudo su - oracle > %ssh_cmds% echo whoami >> %ssh_cmds% start %SYSTEMDRIVE%\Putty_all\PUTTY.exe -v -ssh [email protected] -pw password -m %ssh_cmds%

This assumes that the user you are logging in with has the ability to use sudo without a password and su to the oracle user.

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  • Well he's logging in as root, so he won't need a password or sudo.
    – Xyon
    Feb 4, 2014 at 13:35
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After login, run

su oracle

where su stands for "Switch User" (or something similar);. See man su on the server for more information on the command.

From the root account you don't even need to give the password, since you have full rights on the system.

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  • no I have to login through that same bat file
    – Amit
    Mar 1, 2013 at 10:29

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