nvidia-xrun-core

#!/bin/bash

## nvidia-xrun-core

if [[ $EUID -eq 0 ]]; then
   echo "This script must not be run as root" >&2
   exit 1
fi

# calculate current VT
[[ $(< '/sys/class/tty/tty0/active') =~ tty([0-9]{1,}) ]]
LVT=${BASH_REMATCH[1]}

# calculate first usable display
XNUM="-1"
SOCK="something"
while [ ! -z "$SOCK" ] 
do
  XNUM=$(( $XNUM + 1 ))
  SOCK=$(ls -A -1 /tmp/.X11-unix | grep "X$XNUM" )
done

if [ ! -z "$*" ] # generate exec line if arguments are given
then 
  # test if executable exists
  if [ ! -x "$(which $1 2> /dev/null)" ] 
  then
    echo "$1: No such executable!"
    exit 1
  fi
  # generate exec line
  EXECL="$(which $1)"
  shift 1
  EXECL="$EXECL $*"
  EXECPH=""
else # prepare to start new X sessions if no arguments passed
  EXECL=""
  EXECPH="New X session"
fi

NEWDISP=":$XNUM"

EXECL="/etc/X11/xinit/nvidia-xinitrc $EXECL"

COMMAND="xinit $EXECL -- $NEWDISP vt$LVT -nolisten tcp -br -config nvidia-xorg.conf -configdir nvidia-xorg.conf.d"


exec $COMMAND