切换用户时，用于运行远程脚本的ssh命令在远程服务器上存在shell

Question

When I run a script such as this:

ssh -t root@10.10.10.10 '/tmp/somescript.sh'

where the script is defined as:

#!/bin/sh
mkdir -p /data/workday/cred
chown -R myuser:myuser /data
su myuser -  # <------- NOTICE THIS ! ! ! ! 
rpm -Uvp --force --nodeps --prefix /data/place /data/RPMs/myrpm.rpm

Notice the above su command.

If I comment-out the su command, the script runs remotely and then my shell prompt returns to where I came from ( same server where I ran the ssh command above )

But leaving the script as listed above, causes the script to complete successfully but the shell prompt stays on the remote server .

How can I prevent that ? Making sure that the issuer of the rpm command is a different user than root just a listed ?

Answer 1

But leaving the script as listed above, causes the script to complete successfully but the shell prompt stays on the remote server.

Not exactly. The script is running up to the su command, which spawns a new subshell, and stopping there until you exit the shell. Until you exit that shell, the rpm command never runs, and when it does, it runs as root.

If you want to run the rpm command as a non-root user, you'd need to do something a little different, like:

sudo -u myuser rpm -Uvp ...

Answer 2

在脚本末尾添加“退出”