env/bin/screenshot.sh

47 lines
1021 B
Bash

#!/bin/sh
# screenshot
# Written in 2019-2020 by Lucas
# CC0 1.0 Universal/Public domain - No rights reserved
#
# To the extent possible under law, the author(s) have dedicated all
# copyright and related and neighboring rights to this software to the
# public domain worldwide. This software is distributed without any
# warranty. You should have received a copy of the CC0 Public Domain
# Dedication along with this software. If not, see
# <http://creativecommons.org/publicdomain/zero/1.0/>.
usage()
{
cat - <<. >&2
Usage:
${0##*/}
${0##*/} -id id
${0##*/} -name name
${0##*/} -window
.
exit 1
}
err()
{
printf "%s: %s\n" "${0##*/}" "$*" >&2
exit 1
}
case $# in
0) set -- -root
;;
1) [ "$1" = "-window" ] || err "unknown option $1"
set --
;;
2) [ "$1" = "-id" ] || [ "$1" = "-name" ] || err "unknown option $1"
[ -n "$2" ] || err "$1 expects a non-empty parameter"
;;
*) usage
;;
esac
: ${SCREENSHOTS:=~/media/ss}
xwd -silent "$@" | xwdtopnm |
pnmtopng >"$SCREENSHOTS/$(date +%Y%m%d-%H%M%S).png"