Execute single command in shell script without sudo

Question

I have a simple shell script that is run with sudo as most of the script requires it, yet one of the commands in the script is a Homebrew install, which cannot be executed w

Answer 1

Instantiate the shell using

sudo -u $USER_NAME bash

and execute the shell script by calling,

./program.sh

Answer 2

The easiest way is to run the subcommand via sudo from within the script. The user id to run with can be obtained by $SUDO_USER (look at the output of sudo env):

sudo -u $SUDO_USER ./exec_as_normal_user.sh