#!/bin/bash
+# I, Ian Kelling, follow the GNU license recommendations at
+# https://www.gnu.org/licenses/license-recommendations.en.html. They
+# recommend that small programs, < 300 lines, be licensed under the
+# Apache License 2.0. This file contains or is part of one or more small
+# programs. If a small program grows beyond 300 lines, I plan to switch
+# its license to GPL.
+
+# Copyright 2024 Ian Kelling
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
# Get screenshots from bow, discard them if they dont change much.
-source /usr/local/lib/err
[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
+set -e; . /usr/local/lib/bash-bear; set +e
+
+dest_dir=/d/ziva-log
+case $HOSTNAME in
+ sy)
+ dest_dir=/t/zlog
+ ;;
+esac
+
f=/run/user/1000/ziva-tmp.jpg
-cd /d/ziva-log
+install -g 1000 -o 1000 -m 700 $dest_dir
+cd $dest_dir
shopt -s nullglob
jpgs=( 20*jpg )
if (( ${#jpgs[@]} >= 1 )); then
+ # shellcheck disable=SC2012 # this is much sorter than find|sort
lastf=$(ls -1 20*jpg | tail -n1)
fi
ssh bow DISPLAY=:0 scrot -z $f 2>/dev/null || exit 0
-rsync --inplace bow:$f /d/ziva-log 2>/dev/null || exit 0
+rsync --inplace bow:$f $dest_dir 2>/dev/null || exit 0
ssh bow rm -f $f
same=false
# returns 2 on error, but maybe in that case we want to ignore, file the image away
# and then it can go away in a subsequent comparison. going with that for now.
diff=$(compare -metric MSE $lastf ziva-tmp.jpg /dev/null |& sed 's/[^0-9].*//') ||:
- if printf "%s\n" "$diff" | egrep '^[0-9]+$' &>/dev/null && (( diff < 200 )); then
+ if printf "%s\n" "$diff" | grep -E '^[0-9]+$' &>/dev/null && (( diff < 200 )); then
same=true
fi
fi
if $same; then
rm -f ziva-tmp.jpg
else
- mv ziva-tmp.jpg $(date +%F.%R).jpg
+ mv ziva-tmp.jpg "$(date +%F.%R)".jpg
fi