Help: run with another user, env disappear

Shell Programming and Scripting
1 
#!/bin/sh
PATH_1=$PATH
echo "PATH_1 is " $PATH_1
function user_func (){
  whoami
  export PATH=$PATH_1:/usr/local/bin
  echo "PATH is" $PATH
  exit
}
export -f user_func
su -m hadoop -c 'user_func'

from out put, PATH is not set with PATH_1 append ( it's not another user to run the script, it's the user "hadoop" inside the script to run the function 'user_func' )

PATH_1 is  /usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
hadoop
PATH is /bin:/usr/bin
2

I believe that if you add echo for testing:

function user_func (){
  whoami
  echo "PATH_1 = :$PATH_1:"
  export PATH=$PATH_1:/usr/local/bin
  echo "PATH is" $PATH
  exit
}

You will see that PATH_1 is not in scope in the function. This is my guess - I do not know much about your environment like OS and shell, or what the other user's .profile or .bashrc may have in it.

3

nothing special in my .profile or bashrc, I'm using ubuntu

4

That is not what I am saying. You indicated:
1.another user had trouble running the script
2. PATH_1 was apparently not showing up in the output as expected

Answer:
When run by another user the PATH_1 variable was not in scope inside the function.

Has nothing to do with your personal profile settings

What I would do and we have set on many machines:

export PATH=${PATH}:/usr/local/bin

No functions required.

5

there is misunderstanding here
it's not antoher user to run the script, it's another user to run the function
you can check my code "su -m hadoop -c 'user_func' ", hadoop is another user that I mentioned

6

Okay.
PATH_1 is not being translated as anything, as presented, it is NOT defined in the function because it is not in scope inside the function. I would guess it needs to be exported.