On NetBSD (theme de jour) the identify binary doesn't work for me; this may be nothing to do with NetBSD and more to do with a dying hard drive; it can bloody-well last a bit longer.
Since the script also uses exiv2 I thought I'd see if I could get geometry information from that. And you can!
geometry=$(exiv2 "$1" 2>/dev/null | grep "Image size" | cut -f 2 -d : | tr -d " ")
exiv2 reports the image size by default:
File name : netbsd_wallpaper.jpg File size : 466756 Bytes MIME type : image/jpeg Image size : 1024 x 768 netbsd_wallpaper.jpg: No Exif data found in the file
So all that was necessary was to filter for that line via
grep and then
cut out just the dimensions, finally using
tr to remove the spaces. The
2>/dev/null just gets rid of the "No Exif..." line; alternatively I could have used
2>&1 to ensure this line also went through
grep, but I didn't, so there; Oddly the
-q (quiet) option of
exiv2 doesn't suppress this message.
There's no point in doing a pull request for this because of issue 77 - I can't get that to work, but I don't care about gifs.