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There is no difference in login process for both version's sshd manual: LOGIN PROCESS When a user successfully logs in, sshd does the following: 1. If the login is on a tty, and no command has been specified, prints last login time and /etc/motd (unless prevented in the configuration file or by ~/.hushlogin; see the FILES section). 2. If the login is on a tty, records login time. 3. Checks /etc/nologin; if it exists, prints contents and quits (unless root). 4. Changes to run with normal user privileges. 5. Sets up basic environment. 6. Reads the file ~/.ssh/environment, if it exists, and users are allowed to change their environment. See the PermitUserEnvironment option in sshd_config(5). 7. Changes to user's home directory. 8. If ~/.ssh/rc exists, runs it; else if /etc/ssh/sshrc exists, runs it; otherwise runs xauth. The ``rc'' files are given the X11 authentication protocol and cookie in standard input. See SSHRC, below. 9. Runs user's shell or command. The fact is if I do a "real" login (ssh without command), server2 has the variable be set: Localhost$ ssh server2 echo $LIC_HOST Localhost$ ssh server2 $ hostname server2 $ cat $HOME/.kshrc LIC_HOST=licserv; export LIC_HOST; $ echo $LIC_HOST licserv When running "ssh ssh_server command", I guess the difference between the two versions is at step 9, where server1 runs the command with user's shell but server2 runs the command with a "default shell". I am not sure how the latest Openssh dose on this point. If the user can not specify different environment/shell variables for different server when doing "ssh ssh_server command", that is a restriction for remote application submission. Jialing -----Original Message----- From: Greg Wooledge [mailto:wooledg@xxxxxxxxxxx] Sent: Thursday, March 05, 2009 11:54 AM To: Jialing Liang Cc: secureshell@xxxxxxxxxxxxxxxxx Subject: Re: Activity of the $HOME/.kshrc On Thu, Mar 05, 2009 at 11:43:39AM -0700, Jialing Liang wrote: > > I have ssh login to two Linux - Openssh server. They share one $Home > > directory. server1 runs Redhat 3 with Openssh 3.6.1 and sever2 runs > > Redhat 5 with Openssh 4.3 > >Check the user's shell and make sure it's actually ksh. > It is ksh: > Localhost$ ssh server1 echo $SHELL > /usr/bin/ksh > Localhost$ ssh server2 echo $SHELL > /usr/bin/ksh In that case, look for the manuals for OpenSSH 3.6.1 and 4.3 and make sure the features you're relying on (~/.ssh/environment) are actually available in both versions. Also, check the server configs to make sure PermitUserEnvironment is set to yes (the default is ``no'').
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