Error: Can’t open display: 0

• Solution

# This command can also be added in shell initialization files, for example

export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2}'):0

• References:
  • Sizuji. (2021, May 28). Error: Can’t open display: 0. https://superuser.com/questions/1476086/error-cant-open-display-0