/usr/bin/fbgrab is in fbcat 0.3-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | #!/bin/sh
# Copyright © 2009, 2011 Jakub Wilk
#
# This package 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 2 dated June, 1991.
set -e
usage()
{
cat <<EOF
Usage: $0 [option...] <filename.png>
Options:
-c <N> grab from /dev/ttyN
-C <N> grab from /dev/ttyN, for slower devices
-d <dev> use framebuffer device <dev>
-i turn on PNG interlacing
-s <N> sleep <N> seconds before making screenshot
-? display this help and exit
EOF
exit 1
}
not_supported_option()
{
printf -- '%s option is not supported\n' "$1" >&2
exit 3
}
no_ppm2png()
{
printf -- 'No PPM -> PNG conversion tool found.\nPlease install Netpbm or GraphicsMagick, or ImageMagick.\n' >&2
exit 4
}
internal_error()
{
printf -- 'Internal error!\n' >&2
exit 42
}
current_vt=''
grab_vt=''
wait_after_switch=0
wait_before_switch=0
device=${FRAMEBUFFER:-/dev/fb0}
opts=$(getopt -o 'b:c:C:d:f:h:is:w:?' -- "$@")
interlace=''
eval set -- "$opts"
while true
do
case "$1" in
-b) not_supported_option "$1"; shift 2;;
-c) grab_vt="$2"; wait_after_switch=0; shift 2;;
-C) grab_vt="$2"; wait_after_switch=3; shift 2;;
-d) device="$2"; shift 2;;
-f) not_supported_option "$1"; shift 2;;
-h) not_supported_option "$1"; shift 2;;
-i) interlace=1; shift;;
-s) wait_before_switch="$(($2))"; shift 2;;
-w) not_supported_option "$1"; shift 2;;
-[?]) usage;;
--) shift; break;;
*) internal_error;
esac
done
[ $# -ne 1 ] && usage
if command -v pnmtopng >/dev/null 2>/dev/null
then
ppm2png()
{
pnmtopng ${interlace:+-interlace} - > "$1"
}
elif gm -version 2>/dev/null | grep -q -w GraphicsMagick
then
ppm2png()
{
gm convert ${interlace:+-interlace Line} PPM:- "PNG:$1"
}
elif convert -version 2>/dev/null | grep -q -w ImageMagick
then
ppm2png()
{
convert ${interlace:+-interlace Line} PPM:- "PNG:$1"
}
else
no_ppm2png
fi
sleep "$wait_before_switch"
if [ -n "$grab_vt" ]
then
current_vt=$(fgconsole)
chvt "$grab_vt"
fi
sleep "$wait_after_switch"
fbcat "$device" | ppm2png "$1"
if [ -n "$current_vt" ]
then
chvt "$current_vt"
fi
# vim:ts=2 sw=2 et
|