Android ADB Keep Screen on

#!/system/bin/sh
######################################################################
#Copyright (C) 2023  Kris Occhipinti
#https://filmsbykris.com

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation version 3 of the License.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.
######################################################################

#For use on Android Shell - ADB
#run once to keep screen awake
#run again to free screen

lock="$TMPDIR/keep_awake.lock"

if [[ -f "$lock" ]]
then
        rm "$lock"
        echo "Freeing Screen Lock"
else
        echo "Keeping Screen Awake"
        (
        touch "$lock"
        while [ -f "$lock" ]
        do
                input keyevent mouse
                sleep 5
        done) &
fi