Emacs: Set HOME directory

• Windows
  • to set g:/Dropbox/ as HOME directory for my emacs startup on my second hard disk of my desktop PC, create a batch file *.bat with

set HOME=G:/Dropbox
C:\emacs-26.3-x86_64\bin\runemacs.exe --debug-init

• Linux
  • to set the HOME directory for my emacs starup to the directory where the bash script file *.sh resides in (e. g. USB stick)
    • 1. create myemacs.sh script (code below)
    • 2. make script executable: chmod +x myemacs.ls

#!/bin/bash

# Get absolute path of myemacs.sh
# hint from https://stackoverflow.com/a/1638397 2020-04-13
SCRIPTFULLFILENAME=$(readlink -f "$0")
# Absolute path 
SCRIPTPATHNAME=$(dirname "$SCRIPTFULLFILENAME")

# Start emacs
# hint from https://stackoverflow.com/a/21569451 2020-04-13
# env HOME=$SCRIPTPATHNAME emacs -q -l .emacs.d/init.el 
env HOME=$SCRIPTPATHNAME emacs