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Full Discussion: Pass path variable on SSH
Top Forums Shell Programming and Scripting Pass path variable on SSH Post 303032662 by bakunin on Thursday 21st of March 2019 11:16:06 AM
Old 03-21-2019
If i get that right:

You have a server onto which you want to log on using a certain user. If you connect from host A you want the user, after logging in, to go to one certain directory, if you connect from host B you want to go to another directory and so on. Is that right?

If so: there are several options you have. First you could use the output of who -a to find out from where you have connected. A sample output will look similar to:

Code:
bakunin@host $ who -a
           system boot  2019-03-20 15:29
           run-level 3  2019-03-20 15:29
LOGIN      tty1         2019-03-20 15:29              7581 id=tty1
bakunin + pts/0        2019-03-21 16:01   .          8762 (10.1.1.1)

Using this information you can create a script like this to change to the respective directory:

Code:
icomefrom=$(who -a | sed -n '/bakunin/ {;s/.*(//;s/)$//p;}')

case "$icomefrom" in
     10.1.1.1)
          cd /dir/A
          ;;

     10.1.1.2)
          cd /dir/B
          ;;

     .....
esac

Notice that you may also have a variable "SSH_CONNECTION" set which holds essentially the same information.

Another possibility would be to use different users to connect to the host so you can have different login scripts which put you into different directories. All these users might at the end switch their effective UID (via su) so that you end up with always the same user but in different directories.

There will be a myriad of other possibilites, but as long as you do not explain what you (in the grand scheme of things) want to achieve it is hard to find out which one of them is feasible and which one isn't. So tell us about your plans and we will be better able to help you.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine and append the indicated identity file to that machine's ~/.ssh/autho- rized_keys file. If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary.) NOTES
This program does not modify the permissions of any pre-existing files or directories. Therefore, if the remote sshd has StrictModes set in its configuration, then the user's home, ~/.ssh folder, and ~/.ssh/authorized_keys file may need to have group writability disabled manu- ally, e.g. via chmod go-w ~ ~/.ssh ~/.ssh/authorized_keys on the remote machine. SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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