Revert "install.sh: adapt behviour when calling with argument"

This reverts commit 8a253e1090.

README.md

@@ -8,4 +8,4 @@ This repository contains setup or config files for generic CLI applications, suc
 * `tmux.conf` is tmux config file and should be installed at `~/.tmux.conf`.
 #### Installation
 * `install.sh` script copies above files to their respective destinations;
-  * can be called with an argument, which will be used as user name (to be used with setup scripts).
+  * can be called with an argument, which will be used as user name.

install.sh

@@ -4,11 +4,16 @@ run_directory=$(dirname "$0")
 
 if [ -z "$1" ]; then
   user=$(whoami)
-  if [[ $user != 'root' ]]; then
+else
+  user=$1
+fi
+
+if [[ $user != 'root' ]]; then
   echo "Copying rcs to home directory..."
   cp $run_directory/bashrc /home/$user/.bashrc
   cp $run_directory/vimrc /home/$user/.vimrc
   cp $run_directory/tmux.conf /home/$user/.tmux.conf
+
   if ! command -v sudo &> /dev/null; then
     echo "Could not copy to root directory: sudo was not found."
   else
@@ -17,19 +22,8 @@ if [ -z "$1" ]; then
     sudo cp $run_directory/vimrc /root/.vimrc
     sudo cp $run_directory/tmux.conf /root/.tmux.conf
   fi
-  else
-    echo "Copying rcs to root directory..."
-    cp $run_directory/bashrc /root/.bashrc
-    cp $run_directory/vimrc /root/.vimrc
-    cp $run_directory/tmux.conf /root/.tmux.conf
-  fi
 
-else # running from a setup script, assuming as root
-  user=$1
-  echo "Copying rcs to home directory..."
-  sudo -H -u $user cp $run_directory/bashrc /home/$user/.bashrc
-  sudo -H -u $user cp $run_directory/vimrc /home/$user/.vimrc
-  sudo -H -u $user cp $run_directory/tmux.conf /home/$user/.tmux.conf
+else
   echo "Copying rcs to root directory..."
   cp $run_directory/bashrc /root/.bashrc
   cp $run_directory/vimrc /root/.vimrc